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-   -   What's your view of speaker crossovers? (https://www.audiobanter.co.uk/uk-rec-audio-general-audio/6148-whats-your-view-speaker-crossovers.html)

Andy Evans November 18th 06 10:38 PM

What's your view of speaker crossovers?
 
For years I've been using a single driver now (Monacor 130AL, aluminium
cone like a Jordan). Of course it's not perfect - bass is only just
there and treble could be better. That's the deal. But nevertheless I
add ribbon tweeters (Decca) and take them away. Yes, the ribbon sounds
better but the crossover doesn't.

So, what do you guys feel rocks your boat? Are you in the camp of full
frequency response or that of total integrity (or whatever words you
feel describes a single driver)?

As a reference, the best speakers I know are panels like Magneplanar or
even better Apogee - yes they have crossovers but the sound remains the
same top to bottom in terms of delicacy, so you have the "feel" of a
single driver.


Don Pearce November 19th 06 07:20 AM

What's your view of speaker crossovers?
 
On 18 Nov 2006 15:38:33 -0800, "Andy Evans"
wrote:

For years I've been using a single driver now (Monacor 130AL, aluminium
cone like a Jordan). Of course it's not perfect - bass is only just
there and treble could be better. That's the deal. But nevertheless I
add ribbon tweeters (Decca) and take them away. Yes, the ribbon sounds
better but the crossover doesn't.


Not entirely sure what you are saying here - do you meant he sound is
not good around the crossover region? You do understand that this
isn't going to work simply by bolting a tweeter alongside a single
full-range driver; you need to get a proper bass unit that isn't
trying to operate up in the treble region.

You should also know that the full-range driver is in fact a myth.
They are all dual cone devices with some sort of mechanical crossover
built into the junction of the cones. Obviously they can't be designed
and configured anything like as cleanly as one implemented with and L
and a C.

So, what do you guys feel rocks your boat? Are you in the camp of full
frequency response or that of total integrity (or whatever words you
feel describes a single driver)?


I do have a system that provides full frequency response with the
integrity of a single driver - my Stax electrostatic headphones.

As a reference, the best speakers I know are panels like Magneplanar or
even better Apogee - yes they have crossovers but the sound remains the
same top to bottom in terms of delicacy, so you have the "feel" of a
single driver.


That is because they (the panels) have been designed and developed to
be that way. They probably had a very disjointed sound in the first
model they built; it would have taken many iterations to refine the
design to the point where it all joined up nicely.

d

--
Pearce Consulting
http://www.pearce.uk.com

Andy Evans November 19th 06 10:59 AM

What's your view of speaker crossovers?
 
You should also know that the full-range driver is in fact a myth. They
are all dual cone devices with some sort of mechanical crossover

Hi Don - yes, the majority are as above, but I'm talking single cone
here.

http://www.bmm-electronics.com/Produ...roduct_ID=2731

Here's the frequency response:
http://www.bmm-electronics.com/docum...SPH-130ALc.pdf

The Jordan is similar.
http://www.ejjordan.co.uk/drivers/jx92.html

As you can see, you can just about coax enough bass from these
aluminium units and the highs are there. The Monacor isn't as peaky as
the fr suggests. I have a friend with the Jordans and in my opinion
they sound better with no tweeter. He's endlessly working on the
crossover - I think it's better without. Maybe it's a cop-out to not
use a crossover, but crossovers do alter the sound, and I'm not sure
it's worth it in the end.


Don Pearce November 19th 06 11:28 AM

What's your view of speaker crossovers?
 
On 19 Nov 2006 03:59:47 -0800, "Andy Evans"
wrote:

You should also know that the full-range driver is in fact a myth. They
are all dual cone devices with some sort of mechanical crossover

Hi Don - yes, the majority are as above, but I'm talking single cone
here.

http://www.bmm-electronics.com/Produ...roduct_ID=2731

Here's the frequency response:
http://www.bmm-electronics.com/docum...SPH-130ALc.pdf


Well, that one goes really nasty above about 4kHz, so you would want
to be crossing over into a tweeter at no more than 2kHz to keep that
lump from making this one screech. I wouldn't want to try for a single
driver speaker using this driver - and nor would the manufacturers,
reading their web site.

I am also curious as to why the response starts falling below 150Hz. I
can't see any reason for it in the impedance curve or T-S parameters.

This will also really need helping out at the bottom end with a
subwoofer if you want deep bass. Its Xmax isn't up to shifting a great
deal of air.


The Jordan is similar.
http://www.ejjordan.co.uk/drivers/jx92.html

As you can see, you can just about coax enough bass from these
aluminium units and the highs are there. The Monacor isn't as peaky as
the fr suggests. I have a friend with the Jordans and in my opinion
they sound better with no tweeter. He's endlessly working on the
crossover - I think it's better without. Maybe it's a cop-out to not
use a crossover, but crossovers do alter the sound, and I'm not sure
it's worth it in the end.


If you are adding a tweeter, you absolutely must have a crossover -
there is no way tweeters can handle bass frequencies. But this
certainly isn't a "just do it" sort of thing. You do need to put in
the work to integrate their responses together, otherwise you will
have a bad-sounding setup.

d

--
Pearce Consulting
http://www.pearce.uk.com

Eiron November 19th 06 11:28 AM

What's your view of speaker crossovers?
 
Andy Evans wrote:

...crossovers do alter the sound, and I'm not sure it's worth it in the end.


Do they? Leaving aside the question of inaccurate implementations,
I'm not convinced that any sensible crossover has an audible effect
on the sound. By sensible, I mean like a fourth order Linkwitz-Riley
where the outputs are in phase with each other at all frequencies and
the sum of the output voltages has the same frequency response as the
original. Of course, the phase is changed but ears don't respond to phase.

--
Eiron.

Keith G November 19th 06 11:56 AM

What's your view of speaker crossovers?
 

"Andy Evans" wrote in message
oups.com...
You should also know that the full-range driver is in fact a myth. They
are all dual cone devices with some sort of mechanical crossover

Hi Don - yes, the majority are as above, but I'm talking single cone
here.



I would also disagree with Don's statement, especially if you take the
umpteen million single cone/FR drivers that are used worldwide in radios,
TVs, cars &c. - I certainly have single cone Visaton drivers on the go here
myself...


As you can see, you can just about coax enough bass from these
aluminium units and the highs are there. The Monacor isn't as peaky as
the fr suggests. I have a friend with the Jordans and in my opinion
they sound better with no tweeter. He's endlessly working on the
crossover - I think it's better without. Maybe it's a cop-out to not
use a crossover, but crossovers do alter the sound, and I'm not sure
it's worth it in the end.



Hah!

It never fails to amaze me that, given the extremely low rate of traffic
here, just how *topical* the group continually manages to be! Only yesterday
I finally consigned my Jerichos to the garage for all eternity* having
decided that they will never be any good without correction networks to
contain the peakiness that has remained constant with summat like 4
different drivers being tried!

I found these pages to be very informative:

http://www.termpro.com/articles/xover.html

http://www.termpro.com/articles/xover2.html

but still don't understand the technology/science well enough to consider
efforts made *trying* various networks to be likely worth the
risk/time/energy/expense - too much likelihood of a 'near miss' and endless,
ongoing experimentation...!! (As your friend seems to be discovering!)

In any case, at best, I see multiway speakers with complicated crossovers
(19 elements in the B&W TLs I had and a crossover bigger than many amps in
the Rogers Studio Monitors I had) as a costly fudge to allow the use of
drivers that will provide unnecessary frequency extremes at the cost of
immediacy, speed, timbre and clarity - see:

http://www.apah69.dsl.pipex.com/show/LS35a.JPG

for mention of a good example of a popular speaker (or type of speaker) that
is liked and used by many, despite not appearing to 'have it on paper'...??

As I do from time to time, I did a 'back to basics' SS amp/CD/2-way speaker
(Ruarks) comparison the other day and was quite surprised just how muddy and
blurry the sound was compared to my Lowthers - I had forgotten that the
setup that works brilliantly for TV/Movies (on a daily basis) is quite
useless for music! (So *boring* after the FR units.....!!??)


*Unless anybody wants to take them on a swap 'em for summat interesting...??

See the details he

http://www.apah69.dsl.pipex.com/fostexfe206e/fostex.htm

- but expect the wording to be changed in the near future and don't
underestimate the size/weight of them!





Don Pearce November 19th 06 12:14 PM

What's your view of speaker crossovers?
 
On Sun, 19 Nov 2006 12:56:28 -0000, "Keith G"
wrote:

You should also know that the full-range driver is in fact a myth. They
are all dual cone devices with some sort of mechanical crossover

Hi Don - yes, the majority are as above, but I'm talking single cone
here.



I would also disagree with Don's statement, especially if you take the
umpteen million single cone/FR drivers that are used worldwide in radios,
TVs, cars &c. - I certainly have single cone Visaton drivers on the go here
myself...


Well, those umpteen million single cone drivers in TVs and radios are
anything but FR - they pretty much universally have no bass and no
treble.

Which Visatons do you have again? I've just looked at their web site,
and everything I can find has a separate treble unit of one sort or
another in the middle of the bass cone.

d

--
Pearce Consulting
http://www.pearce.uk.com

Jim Lesurf November 19th 06 12:16 PM

What's your view of speaker crossovers?
 
In article .com,
Andy
Evans wrote:
You should also know that the full-range driver is in fact a myth. They
are all dual cone devices with some sort of mechanical crossover


Hi Don - yes, the majority are as above, but I'm talking single cone
here.


If you are referring to single units, then do you not mean frequency
correction and/or matching networks, not 'crossover'?

As to your original question: My reaction is to choose by the results. :-)

My impression is that making a single driver speaker imposes such demanding
constraints on the design and use as to be rather limiting. But then my
reaction is to prefer (phased array) electrostatics to cone-and-box
speakers, anyway.

Slainte,

Jim

--
Electronics http://www.st-and.ac.uk/~www_pa/Scot...o/electron.htm
Audio Misc http://www.st-and.demon.co.uk/AudioMisc/index.html
Armstrong Audio http://www.st-and.demon.co.uk/Audio/armstrong.html
Barbirolli Soc. http://www.st-and.demon.co.uk/JBSoc/JBSoc.html

Keith G November 19th 06 12:49 PM

What's your view of speaker crossovers?
 

"Don Pearce" wrote in message
...
On Sun, 19 Nov 2006 12:56:28 -0000, "Keith G"
wrote:

You should also know that the full-range driver is in fact a myth. They
are all dual cone devices with some sort of mechanical crossover

Hi Don - yes, the majority are as above, but I'm talking single cone
here.



I would also disagree with Don's statement, especially if you take the
umpteen million single cone/FR drivers that are used worldwide in radios,
TVs, cars &c. - I certainly have single cone Visaton drivers on the go
here
myself...


Well, those umpteen million single cone drivers in TVs and radios are
anything but FR - they pretty much universally have no bass and no
treble.




Ah, but they *can* have - ask yer mate Dr Bose or any 'horn' cabinet
builder....!! ;-)



Which Visatons do you have again? I've just looked at their web site,
and everything I can find has a separate treble unit of one sort or
another in the middle of the bass cone.



FRS8s in the Needles and B200s back in their boxes....

http://www.impactaudio.co.uk/speaker...b6ddb0ba26b286


Let's put this 'frequency extremes' thing to bed once and for all - there is
no shortage of high frequency with just about all the drivers I have
used/considered and which quote a top end of 18K or better and up to 30K in
some instances. Bass is no worse than 'ordinary' speakers and is dependent
on cabinet/room science, as you know better than I.....

See again:

http://www.apah69.dsl.pipex.com/show/LS35a.JPG

for an example of a speaker with 'no frequency extremes' which would appear
to benefit from the use of a subwoofer in *no different way* to many (maybe
most) FR designs - *if* you need yer trousers flapped...!!

One visitor here, on hearing my Pinkies...

http://www.apah69.dsl.pipex.com/busc.../buschorns.htm

"Whoah! They've got more bass than my AEs...!!"

(The pinkies have 4" FR drivers and the AEs are/were 3-way floorstanding
speakers with 165mm bass units - EVO 3s??)




Dave Plowman (News) November 19th 06 12:52 PM

What's your view of speaker crossovers?
 
In article ,
Keith G wrote:

"Andy Evans" wrote in message
oups.com...
You should also know that the full-range driver is in fact a myth. They
are all dual cone devices with some sort of mechanical crossover

Hi Don - yes, the majority are as above, but I'm talking single cone
here.



I would also disagree with Don's statement, especially if you take the
umpteen million single cone/FR drivers that are used worldwide in
radios, TVs, cars &c.


These are 'full range', are they? I suppose it depends on what your range
is. But I can't think of any decent ICE setup that uses single drivers -
quite the reverse in fact. Nor of *any* TV set with a decent internal
speaker setup.


- I certainly have single cone Visaton drivers on
the go here myself...



As you can see, you can just about coax enough bass from these
aluminium units and the highs are there. The Monacor isn't as peaky as
the fr suggests. I have a friend with the Jordans and in my opinion
they sound better with no tweeter. He's endlessly working on the
crossover - I think it's better without. Maybe it's a cop-out to not
use a crossover, but crossovers do alter the sound, and I'm not sure
it's worth it in the end.



Hah!


It never fails to amaze me that, given the extremely low rate of traffic
here, just how *topical* the group continually manages to be! Only
yesterday I finally consigned my Jerichos to the garage for all
eternity* having decided that they will never be any good without
correction networks to contain the peakiness that has remained constant
with summat like 4 different drivers being tried!


I found these pages to be very informative:


http://www.termpro.com/articles/xover.html


http://www.termpro.com/articles/xover2.html


but still don't understand the technology/science well enough to
consider efforts made *trying* various networks to be likely worth the
risk/time/energy/expense - too much likelihood of a 'near miss' and
endless, ongoing experimentation...!! (As your friend seems to be
discovering!)


In any case, at best, I see multiway speakers with complicated
crossovers (19 elements in the B&W TLs I had and a crossover bigger
than many amps in the Rogers Studio Monitors I had) as a costly fudge
to allow the use of drivers that will provide unnecessary frequency
extremes


Like over about 2 kHz? ;-)


at the cost of immediacy, speed, timbre and clarity


Ah. Those flowery expressions again. Wish I knew what they meant - or were
intended to mean. I'll try:-

Immediacy:- I've failed.
Speed:- A small unit can move faster than a large one.
Timb- Mostly provided by the cabinet.
Clarity:- Mostly provided with no cabinet.

- see:


http://www.apah69.dsl.pipex.com/show/LS35a.JPG


for mention of a good example of a popular speaker (or type of speaker)
that is liked and used by many, despite not appearing to 'have it on
paper'...??


The 3/5a has a very involved crossover to allow for production tolerances
of the drive units. They also are poor at maintaining their performance
over the years.

As I do from time to time, I did a 'back to basics' SS amp/CD/2-way
speaker (Ruarks) comparison the other day and was quite surprised just
how muddy and blurry the sound was compared to my Lowthers - I had
forgotten that the setup that works brilliantly for TV/Movies (on a
daily basis) is quite useless for music! (So *boring* after the FR
units.....!!??)


A system which does well on all types of music will also be more than
suitable for TV/movies. Unless you think these things are balanced of some
strange exotic setups? Of course you *might* want more power for the jets
taking off on Top Gun etc...


*Unless anybody wants to take them on a swap 'em for summat
interesting...??


See the details he


http://www.apah69.dsl.pipex.com/fostexfe206e/fostex.htm


- but expect the wording to be changed in the near future and don't
underestimate the size/weight of them!


Seems only yesterday they were impressing the milkman. ;-)

--
*He who laughs last, thinks slowest.

Dave Plowman London SW
To e-mail, change noise into sound.

Dave Plowman (News) November 19th 06 01:07 PM

What's your view of speaker crossovers?
 
In article ,
Keith G wrote:
Well, those umpteen million single cone drivers in TVs and radios are
anything but FR - they pretty much universally have no bass and no
treble.


Ah, but they *can* have - ask yer mate Dr Bose or any 'horn' cabinet
builder....!! ;-)


Which is why both these produce incredibly 'coloured' sound.

--
*Why are a wise man and a wise guy opposites?

Dave Plowman London SW
To e-mail, change noise into sound.

Don Pearce November 19th 06 01:24 PM

What's your view of speaker crossovers?
 
On Sun, 19 Nov 2006 13:49:24 -0000, "Keith G"
wrote:


"Don Pearce" wrote in message
...
On Sun, 19 Nov 2006 12:56:28 -0000, "Keith G"
wrote:

You should also know that the full-range driver is in fact a myth. They
are all dual cone devices with some sort of mechanical crossover

Hi Don - yes, the majority are as above, but I'm talking single cone
here.


I would also disagree with Don's statement, especially if you take the
umpteen million single cone/FR drivers that are used worldwide in radios,
TVs, cars &c. - I certainly have single cone Visaton drivers on the go
here
myself...


Well, those umpteen million single cone drivers in TVs and radios are
anything but FR - they pretty much universally have no bass and no
treble.




Ah, but they *can* have - ask yer mate Dr Bose or any 'horn' cabinet
builder....!! ;-)



No, they can't. Dr. Bose's reputation goes before him as a marketeer,
but his speakers are universally derided among the cognoscenti (and
they do sound genuinely horrible). And of course horns make no
difference to treble, and can only increase bass down to the
wavelength limit of the horn's dimensions - I've never come across one
with the twenty feet or so you would need to get true bass out of
them, although I have seen pictures of builds by the certifiable.


Which Visatons do you have again? I've just looked at their web site,
and everything I can find has a separate treble unit of one sort or
another in the middle of the bass cone.



FRS8s in the Needles and B200s back in their boxes....

http://www.impactaudio.co.uk/speaker...b6ddb0ba26b286


Let's put this 'frequency extremes' thing to bed once and for all - there is
no shortage of high frequency with just about all the drivers I have
used/considered and which quote a top end of 18K or better and up to 30K in
some instances. Bass is no worse than 'ordinary' speakers and is dependent
on cabinet/room science, as you know better than I.....


Didn't we measure your speakers and find them rolling off severely
above 10kHz? As for bass, we also found that there was nothing below
about 60Hz - which makes total sense for the dimensions you have. I
have a tiny pair of bookshelves in front f me (KEF Cresta 10) which do
at least as well, probably rather better. Top end of course - no
comparison.

See again:

http://www.apah69.dsl.pipex.com/show/LS35a.JPG

for an example of a speaker with 'no frequency extremes' which would appear
to benefit from the use of a subwoofer in *no different way* to many (maybe
most) FR designs - *if* you need yer trousers flapped...!!

The LS35a was designed for a purpose, and it fitted that very well. It
was for monitoring BBC programme material. Extremes of bass and treble
formed no part of the BBC output, so didn't need monitoring. Sure
people adopted them for home listening, at which point the
shortcomings started revealing themselves, so subwoofers got added.

One visitor here, on hearing my Pinkies...

http://www.apah69.dsl.pipex.com/busc.../buschorns.htm

"Whoah! They've got more bass than my AEs...!!"

(The pinkies have 4" FR drivers and the AEs are/were 3-way floorstanding
speakers with 165mm bass units - EVO 3s??)



Yup, and we both know what that is all about. It is why those really
cheap home cinema kits can have subwoofers that go no lower than 100Hz
- make it boom a bit and it sounds like bass - until you hear the real
thing, that is. You really do need to think some more about that
subwoofer, you know ;-)

d

--
Pearce Consulting
http://www.pearce.uk.com

Keith G November 19th 06 02:04 PM

What's your view of speaker crossovers?
 

"Don Pearce" wrote in message
...
On Sun, 19 Nov 2006 13:49:24 -0000, "Keith G"
wrote:


"Don Pearce" wrote in message
.. .
On Sun, 19 Nov 2006 12:56:28 -0000, "Keith G"
wrote:

You should also know that the full-range driver is in fact a myth.
They
are all dual cone devices with some sort of mechanical crossover

Hi Don - yes, the majority are as above, but I'm talking single cone
here.


I would also disagree with Don's statement, especially if you take the
umpteen million single cone/FR drivers that are used worldwide in
radios,
TVs, cars &c. - I certainly have single cone Visaton drivers on the go
here
myself...

Well, those umpteen million single cone drivers in TVs and radios are
anything but FR - they pretty much universally have no bass and no
treble.




Ah, but they *can* have - ask yer mate Dr Bose or any 'horn' cabinet
builder....!! ;-)



No, they can't. Dr. Bose's reputation goes before him as a marketeer,
but his speakers are universally derided among the cognoscenti (and
they do sound genuinely horrible). And of course horns make no
difference to treble, and can only increase bass down to the
wavelength limit of the horn's dimensions - I've never come across one
with the twenty feet or so you would need to get true bass out of
them, although I have seen pictures of builds by the certifiable.


Which Visatons do you have again? I've just looked at their web site,
and everything I can find has a separate treble unit of one sort or
another in the middle of the bass cone.



FRS8s in the Needles and B200s back in their boxes....

http://www.impactaudio.co.uk/speaker...b6ddb0ba26b286


Let's put this 'frequency extremes' thing to bed once and for all - there
is
no shortage of high frequency with just about all the drivers I have
used/considered and which quote a top end of 18K or better and up to 30K
in
some instances. Bass is no worse than 'ordinary' speakers and is dependent
on cabinet/room science, as you know better than I.....


Didn't we measure your speakers and find them rolling off severely
above 10kHz? As for bass, we also found that there was nothing below
about 60Hz - which makes total sense for the dimensions you have. I
have a tiny pair of bookshelves in front f me (KEF Cresta 10) which do
at least as well, probably rather better. Top end of course - no
comparison.

See again:

http://www.apah69.dsl.pipex.com/show/LS35a.JPG

for an example of a speaker with 'no frequency extremes' which would
appear
to benefit from the use of a subwoofer in *no different way* to many
(maybe
most) FR designs - *if* you need yer trousers flapped...!!

The LS35a was designed for a purpose, and it fitted that very well. It
was for monitoring BBC programme material. Extremes of bass and treble
formed no part of the BBC output, so didn't need monitoring. Sure
people adopted them for home listening, at which point the
shortcomings started revealing themselves, so subwoofers got added.

One visitor here, on hearing my Pinkies...

http://www.apah69.dsl.pipex.com/busc.../buschorns.htm

"Whoah! They've got more bass than my AEs...!!"

(The pinkies have 4" FR drivers and the AEs are/were 3-way floorstanding
speakers with 165mm bass units - EVO 3s??)



Yup, and we both know what that is all about. It is why those really
cheap home cinema kits can have subwoofers that go no lower than 100Hz
- make it boom a bit and it sounds like bass - until you hear the real
thing, that is. You really do need to think some more about that
subwoofer, you know ;-)




Later, Don - I gotta grab some daylight and go walk the dog!!






Keith G November 19th 06 02:04 PM

What's your view of speaker crossovers?
 

"Dave Plowman (News)" wrote in message
...
In article ,
Keith G wrote:
Well, those umpteen million single cone drivers in TVs and radios are
anything but FR - they pretty much universally have no bass and no
treble.


Ah, but they *can* have - ask yer mate Dr Bose or any 'horn' cabinet
builder....!! ;-)


Which is why both these produce incredibly 'coloured' sound.




Ah. Those flowery expressions again. Wish I knew what they meant - or were
intended to mean.

What colour did you have in mind? Puce? Cerise?

Eau De Nil...??

Burnt Umber....??




Michael of Wrexham November 19th 06 02:50 PM

What's your view of speaker crossovers?
 
"Andy Evans" wrote in message
ups.com...
For years I've been using a single driver now (Monacor 130AL, aluminium
cone like a Jordan). Of course it's not perfect - bass is only just
there and treble could be better. That's the deal. But nevertheless I
add ribbon tweeters (Decca) and take them away. Yes, the ribbon sounds
better but the crossover doesn't.

So, what do you guys feel rocks your boat? Are you in the camp of full
frequency response or that of total integrity (or whatever words you
feel describes a single driver)?

As a reference, the best speakers I know are panels like Magneplanar or
even better Apogee - yes they have crossovers but the sound remains the
same top to bottom in terms of delicacy, so you have the "feel" of a
single driver.

I thought that Decca had disappeared years ago, apart from Decca Records.
Mike.



Dave Plowman (News) November 19th 06 03:45 PM

What's your view of speaker crossovers?
 
In article ,
Keith G wrote:

"Dave Plowman (News)" wrote in message
...
In article , Keith G
wrote:
Well, those umpteen million single cone drivers in TVs and radios
are anything but FR - they pretty much universally have no bass and
no treble.


Ah, but they *can* have - ask yer mate Dr Bose or any 'horn' cabinet
builder....!! ;-)


Which is why both these produce incredibly 'coloured' sound.




Ah. Those flowery expressions again. Wish I knew what they meant - or
were intended to mean.


What colour did you have in mind? Puce? Cerise?


Eau De Nil...??


Burnt Umber....??


Colouration of sound is a term that has been in use by pros ever since I
started in the industry - and that's a long long time ago. Think of a PA
system just before the point of howlround - that's colouration. Or the
same with vinyl being played on certain turntables at high level. In other
words an external influence on a sound.

There now. That's an explanation.

How about one for 'speed' and 'immediacy' ;-)

--
*Where do forest rangers go to "get away from it all?"

Dave Plowman London SW
To e-mail, change noise into sound.

Dave Plowman (News) November 19th 06 04:06 PM

What's your view of speaker crossovers?
 
In article ,
Keith G wrote:

"Dave Plowman (News)" wrote in message
...
In article ,
Keith G wrote:
Well, those umpteen million single cone drivers in TVs and radios
are anything but FR - they pretty much universally have no bass and
no treble.


Ah, but they *can* have - ask yer mate Dr Bose or any 'horn' cabinet
builder....!! ;-)


Which is why both these produce incredibly 'coloured' sound.




Ah. Those flowery expressions again. Wish I knew what they meant - or
were intended to mean.


You might find this article to be of use. Consider it a form of
advertising, though.

http://www.harbeth.co.uk/designersno...r7-2/index.php

--
*Fax is stronger than fiction *

Dave Plowman London SW
To e-mail, change noise into sound.

Andy Evans November 19th 06 05:02 PM

What's your view of speaker crossovers?
 
Let's put this 'frequency extremes' thing to bed once and for all -
there is
no shortage of high frequency with just about all the drivers I have
used/considered

The BBC traditionally only required sound flat to 13Khz. Being in my
50s, I consider that quite enough. I don't think it's the extension
that matters but the delicacy and faithfullness of timbre. I'd prefer a
ribbon for the treble, and I might eventually get it right (an active
crossover would do the trick). But aluminium cones are really quite
detailed and get most of it right.

Eiron suggested that crossovers could be virtually inaudible in their
effects. Even apart from the phase anomalies and design artefacts,
they're made from componants, and componants affect the sound. A 47uF
capacitor is no way going to be transparent - I can hear differences
between different kinds of polypropylenes in this value, without even
thinking of electrolytics, which I wouldn't have anywhere in the signal
path of anything in my system. So I reject out of hand the idea that
crossovers are virtually transparent. Of course the goal is, when using
them, to make them sound the least un-transparent, and really good
componants can go some way in that direction, so all isn't lost. Plus
computer modelling helps a lot these days.

The best way to do the crossover is no doubt in the digital domain -
that really is something that interests me, having heard the Lyngdorf
Audio stuff at the HiFi show, it was really impressive.


Andy Evans November 19th 06 05:07 PM

What's your view of speaker crossovers?
 
I thought that Decca had disappeared years ago, apart from Decca
Records.
Mike

Too true, alas. These are old units I have. See them on ebay sometimes.


Keith G November 19th 06 10:11 PM

What's your view of speaker crossovers?
 

"Don Pearce" wrote in message
...
On Sun, 19 Nov 2006 13:49:24 -0000, "Keith G"
wrote:


"Don Pearce" wrote in message
.. .
On Sun, 19 Nov 2006 12:56:28 -0000, "Keith G"
wrote:

You should also know that the full-range driver is in fact a myth.
They
are all dual cone devices with some sort of mechanical crossover

Hi Don - yes, the majority are as above, but I'm talking single cone
here.


I would also disagree with Don's statement, especially if you take the
umpteen million single cone/FR drivers that are used worldwide in
radios,
TVs, cars &c. - I certainly have single cone Visaton drivers on the go
here
myself...

Well, those umpteen million single cone drivers in TVs and radios are
anything but FR - they pretty much universally have no bass and no
treble.




Ah, but they *can* have - ask yer mate Dr Bose or any 'horn' cabinet
builder....!! ;-)



No, they can't. Dr. Bose's reputation goes before him as a marketeer,
but his speakers are universally derided among the cognoscenti (and
they do sound genuinely horrible). And of course horns make no
difference to treble, and can only increase bass down to the
wavelength limit of the horn's dimensions - I've never come across one
with the twenty feet or so you would need to get true bass out of
them, although I have seen pictures of builds by the certifiable.




I'm wary of terms like 'true bass' given that, at best, 'hifi' is a
*depiction* of 'real sound' - but, surely it doesn't need to be repeated
that nobody in his right mind would seek 'true bass' from horns or bookshelf
speakers....???




Which Visatons do you have again? I've just looked at their web site,
and everything I can find has a separate treble unit of one sort or
another in the middle of the bass cone.



FRS8s in the Needles and B200s back in their boxes....

http://www.impactaudio.co.uk/speaker...b6ddb0ba26b286


Let's put this 'frequency extremes' thing to bed once and for all - there
is
no shortage of high frequency with just about all the drivers I have
used/considered and which quote a top end of 18K or better and up to 30K
in
some instances. Bass is no worse than 'ordinary' speakers and is dependent
on cabinet/room science, as you know better than I.....


Didn't we measure your speakers and find them rolling off severely
above 10kHz?



Read the numbers:

Lowther PM6C (30 - 20k)
Lowther EX3 (30 - 22k)
Fostex FE103E (fs - 22k)
Visaton B200 (fu - 18k)
Visaton FRS8-8 (80 - 20k)

None of the drivers I currently use quote a top end anything like as low as
10k. Consequently, I take all these 'readings/measurements' and various
other figures with a pinch of salt - it what they *sound* like (overall) to
me that counts...



As for bass, we also found that there was nothing below
about 60Hz - which makes total sense for the dimensions you have. I
have a tiny pair of bookshelves in front f me (KEF Cresta 10) which do
at least as well, probably rather better. Top end of course - no
comparison.



You are forgetting that I've had various examples of the following makes of
speakers he

KEF
Tannoy
Wharfedale
Quad
Dynaudio
Ruark
JM-Labs
B&W
Jamo (Concert 8s)
Rogers

plus probably others I can't recall...??




See again:

http://www.apah69.dsl.pipex.com/show/LS35a.JPG

for an example of a speaker with 'no frequency extremes' which would
appear
to benefit from the use of a subwoofer in *no different way* to many
(maybe
most) FR designs - *if* you need yer trousers flapped...!!

The LS35a was designed for a purpose, and it fitted that very well. It
was for monitoring BBC programme material. Extremes of bass and treble
formed no part of the BBC output, so didn't need monitoring. Sure
people adopted them for home listening, at which point the
shortcomings started revealing themselves, so subwoofers got added.



I've not had anything like as much exposure to subs - all I can say is I've
never yet had one here that I didn't switch off after a few minutes...



One visitor here, on hearing my Pinkies...

http://www.apah69.dsl.pipex.com/busc.../buschorns.htm

"Whoah! They've got more bass than my AEs...!!"

(The pinkies have 4" FR drivers and the AEs are/were 3-way floorstanding
speakers with 165mm bass units - EVO 3s??)



Yup, and we both know what that is all about. It is why those really
cheap home cinema kits can have subwoofers that go no lower than 100Hz
- make it boom a bit and it sounds like bass - until you hear the real
thing, that is. You really do need to think some more about that
subwoofer, you know ;-)



See above - if it were not for the plethora of organ music I have stacked
here, waiting for serious attention, I wouldn't entertain the idea for a
moment. I have been fighting *too much bass* in my very small room for a
while now, but any time I need my trousers flapped I'd only have to drag my
Paladins the length of the house....



Keith G November 19th 06 10:11 PM

What's your view of speaker crossovers?
 

"Dave Plowman (News)" wrote in message
...
In article ,
Keith G wrote:

"Dave Plowman (News)" wrote in message
...
In article , Keith G
wrote:
Well, those umpteen million single cone drivers in TVs and radios
are anything but FR - they pretty much universally have no bass and
no treble.

Ah, but they *can* have - ask yer mate Dr Bose or any 'horn' cabinet
builder....!! ;-)

Which is why both these produce incredibly 'coloured' sound.




Ah. Those flowery expressions again. Wish I knew what they meant - or
were intended to mean.


What colour did you have in mind? Puce? Cerise?


Eau De Nil...??


Burnt Umber....??


Colouration of sound is a term that has been in use by pros ever since I
started in the industry - and that's a long long time ago. Think of a PA
system just before the point of howlround - that's colouration. Or the
same with vinyl being played on certain turntables at high level. In other
words an external influence on a sound.

There now. That's an explanation.

How about one for 'speed' and 'immediacy' ;-)




No thanks, I'll pass - the one for 'coloured' wasn't too hot....





Keith G November 19th 06 10:22 PM

What's your view of speaker crossovers?
 

"Andy Evans" wrote in message
oups.com...
Let's put this 'frequency extremes' thing to bed once and for all -
there is
no shortage of high frequency with just about all the drivers I have
used/considered

The BBC traditionally only required sound flat to 13Khz. Being in my
50s, I consider that quite enough. I don't think it's the extension
that matters but the delicacy and faithfullness of timbre.




I don't worry about the 'figures' Andy - as I've just said to Don, it's the
sound (*only*) that counts. It's not what 'horns' may (or may not) do well,
it's that once you are used to them, going back to ordinary speakers is such
a depressing experience.....






Dave Plowman (News) November 19th 06 11:37 PM

What's your view of speaker crossovers?
 
In article ,
Keith G wrote:
Read the numbers:


Lowther PM6C (30 - 20k) Lowther EX3 (30 - 22k) Fostex FE103E (fs - 22k)
Visaton B200 (fu - 18k) Visaton FRS8-8 (80 - 20k)


None of the drivers I currently use quote a top end anything like as low
as 10k. Consequently, I take all these 'readings/measurements' and
various other figures with a pinch of salt - it what they *sound* like
(overall) to me that counts...


Those numbers mean nothing without how they're derived.

--
*No I haven't stolen it , I'm just a **** driver*

Dave Plowman London SW
To e-mail, change noise into sound.

Dave Plowman (News) November 19th 06 11:38 PM

What's your view of speaker crossovers?
 
In article ,
Keith G wrote:
o thanks, I'll pass - the one for 'coloured' wasn't too hot....


So as a self professed vinyl freak you've never heard the effect of
feedback?

--
*Horn broken. - Watch for finger.

Dave Plowman London SW
To e-mail, change noise into sound.

Keith G November 20th 06 01:02 AM

What's your view of speaker crossovers?
 

"Dave Plowman (News)" wrote in message
...
In article ,
Keith G wrote:
Read the numbers:


Lowther PM6C (30 - 20k) Lowther EX3 (30 - 22k) Fostex FE103E (fs - 22k)
Visaton B200 (fu - 18k) Visaton FRS8-8 (80 - 20k)


None of the drivers I currently use quote a top end anything like as low
as 10k. Consequently, I take all these 'readings/measurements' and
various other figures with a pinch of salt - it what they *sound* like
(overall) to me that counts...


Those numbers mean nothing without how they're derived.




Frankly, the numbers don't mean very much at all in the real world, other
than to a designer or manufacturer - for example, the frequency range of a
full orchestra is only about 40-14k and the *dink dink* 'Top C' on a piano
is only about 4096 Hz with only weak (inaudible for most purposes) harmonics
extending beyond 10 kHz....

(Kinda make waving the *numbers* about a bit of an exercise in
pointlessness, doesn't it...??? :-)





Don Pearce November 20th 06 07:12 AM

What's your view of speaker crossovers?
 
On Sun, 19 Nov 2006 23:11:32 -0000, "Keith G"
wrote:


"Don Pearce" wrote in message
...
On Sun, 19 Nov 2006 13:49:24 -0000, "Keith G"
wrote:


"Don Pearce" wrote in message
. ..
On Sun, 19 Nov 2006 12:56:28 -0000, "Keith G"
wrote:

You should also know that the full-range driver is in fact a myth.
They
are all dual cone devices with some sort of mechanical crossover

Hi Don - yes, the majority are as above, but I'm talking single cone
here.


I would also disagree with Don's statement, especially if you take the
umpteen million single cone/FR drivers that are used worldwide in
radios,
TVs, cars &c. - I certainly have single cone Visaton drivers on the go
here
myself...

Well, those umpteen million single cone drivers in TVs and radios are
anything but FR - they pretty much universally have no bass and no
treble.



Ah, but they *can* have - ask yer mate Dr Bose or any 'horn' cabinet
builder....!! ;-)



No, they can't. Dr. Bose's reputation goes before him as a marketeer,
but his speakers are universally derided among the cognoscenti (and
they do sound genuinely horrible). And of course horns make no
difference to treble, and can only increase bass down to the
wavelength limit of the horn's dimensions - I've never come across one
with the twenty feet or so you would need to get true bass out of
them, although I have seen pictures of builds by the certifiable.




I'm wary of terms like 'true bass' given that, at best, 'hifi' is a
*depiction* of 'real sound' - but, surely it doesn't need to be repeated
that nobody in his right mind would seek 'true bass' from horns or bookshelf
speakers....???


It does sound a lot nicer, though. And it certainly doesn't sound like
"a lot of bass". And why do you think that nobody in his right mind
would seek true bass from *any* speaker? It is an entirely reasonable
thing to seek.




Which Visatons do you have again? I've just looked at their web site,
and everything I can find has a separate treble unit of one sort or
another in the middle of the bass cone.


FRS8s in the Needles and B200s back in their boxes....

http://www.impactaudio.co.uk/speaker...b6ddb0ba26b286


Let's put this 'frequency extremes' thing to bed once and for all - there
is
no shortage of high frequency with just about all the drivers I have
used/considered and which quote a top end of 18K or better and up to 30K
in
some instances. Bass is no worse than 'ordinary' speakers and is dependent
on cabinet/room science, as you know better than I.....


Didn't we measure your speakers and find them rolling off severely
above 10kHz?



Read the numbers:

Lowther PM6C (30 - 20k)
Lowther EX3 (30 - 22k)
Fostex FE103E (fs - 22k)
Visaton B200 (fu - 18k)
Visaton FRS8-8 (80 - 20k)

None of the drivers I currently use quote a top end anything like as low as
10k. Consequently, I take all these 'readings/measurements' and various
other figures with a pinch of salt - it what they *sound* like (overall) to
me that counts...


I've read the numbers - and like you, I'm unimpressed by them. As you
say, what they sound like matters much more and for me a real,
dedicated tweeter produces a much cleaner, pleasanter sound that a
single FR unit.



As for bass, we also found that there was nothing below
about 60Hz - which makes total sense for the dimensions you have. I
have a tiny pair of bookshelves in front f me (KEF Cresta 10) which do
at least as well, probably rather better. Top end of course - no
comparison.



You are forgetting that I've had various examples of the following makes of
speakers he

KEF
Tannoy
Wharfedale
Quad
Dynaudio
Ruark
JM-Labs
B&W
Jamo (Concert 8s)
Rogers

plus probably others I can't recall...??


Yup, some good names there.



See again:

http://www.apah69.dsl.pipex.com/show/LS35a.JPG

for an example of a speaker with 'no frequency extremes' which would
appear
to benefit from the use of a subwoofer in *no different way* to many
(maybe
most) FR designs - *if* you need yer trousers flapped...!!

The LS35a was designed for a purpose, and it fitted that very well. It
was for monitoring BBC programme material. Extremes of bass and treble
formed no part of the BBC output, so didn't need monitoring. Sure
people adopted them for home listening, at which point the
shortcomings started revealing themselves, so subwoofers got added.



I've not had anything like as much exposure to subs - all I can say is I've
never yet had one here that I didn't switch off after a few minutes...


Nor had I until I bit the bullet and built my own. Now I really can't
tell it is on until I turn it off IYSWIM.



One visitor here, on hearing my Pinkies...

http://www.apah69.dsl.pipex.com/busc.../buschorns.htm

"Whoah! They've got more bass than my AEs...!!"

(The pinkies have 4" FR drivers and the AEs are/were 3-way floorstanding
speakers with 165mm bass units - EVO 3s??)



Yup, and we both know what that is all about. It is why those really
cheap home cinema kits can have subwoofers that go no lower than 100Hz
- make it boom a bit and it sounds like bass - until you hear the real
thing, that is. You really do need to think some more about that
subwoofer, you know ;-)



See above - if it were not for the plethora of organ music I have stacked
here, waiting for serious attention, I wouldn't entertain the idea for a
moment. I have been fighting *too much bass* in my very small room for a
while now, but any time I need my trousers flapped I'd only have to drag my
Paladins the length of the house....


You don't get "too much bass" with a good sub. The system may even
sound a little lighter in bass, because you have the opportunity to
tune out the upper-bass hump that is currently propping up the
illusion of bass.

d

--
Pearce Consulting
http://www.pearce.uk.com

Dave Plowman (News) November 20th 06 08:25 AM

What's your view of speaker crossovers?
 
In article ,
Keith G wrote:
Frankly, the numbers don't mean very much at all in the real world,
other than to a designer or manufacturer - for example, the frequency
range of a full orchestra is only about 40-14k and the *dink dink* 'Top
C' on a piano is only about 4096 Hz with only weak (inaudible for most
purposes) harmonics extending beyond 10 kHz....


If the harmonics were inaudible it would sound like a sine wave. So
nothing like a piano at all.

I'm amazed at you. You go on and on about the subtle differences you claim
to hear then come up with rubbish like this...

--
*The severity of the itch is proportional to the reach *

Dave Plowman London SW
To e-mail, change noise into sound.

Keith G November 20th 06 09:04 AM

What's your view of speaker crossovers?
 

"Don Pearce" wrote in message
...
On Sun, 19 Nov 2006 23:11:32 -0000, "Keith G"
wrote:


"Don Pearce" wrote in message
.. .
On Sun, 19 Nov 2006 13:49:24 -0000, "Keith G"
wrote:


"Don Pearce" wrote in message
.. .
On Sun, 19 Nov 2006 12:56:28 -0000, "Keith G"
wrote:

You should also know that the full-range driver is in fact a myth.
They
are all dual cone devices with some sort of mechanical crossover

Hi Don - yes, the majority are as above, but I'm talking single
cone
here.


I would also disagree with Don's statement, especially if you take the
umpteen million single cone/FR drivers that are used worldwide in
radios,
TVs, cars &c. - I certainly have single cone Visaton drivers on the go
here
myself...

Well, those umpteen million single cone drivers in TVs and radios are
anything but FR - they pretty much universally have no bass and no
treble.



Ah, but they *can* have - ask yer mate Dr Bose or any 'horn' cabinet
builder....!! ;-)



No, they can't. Dr. Bose's reputation goes before him as a marketeer,
but his speakers are universally derided among the cognoscenti (and
they do sound genuinely horrible). And of course horns make no
difference to treble, and can only increase bass down to the
wavelength limit of the horn's dimensions - I've never come across one
with the twenty feet or so you would need to get true bass out of
them, although I have seen pictures of builds by the certifiable.




I'm wary of terms like 'true bass' given that, at best, 'hifi' is a
*depiction* of 'real sound' - but, surely it doesn't need to be repeated
that nobody in his right mind would seek 'true bass' from horns or
bookshelf
speakers....???


It does sound a lot nicer, though. And it certainly doesn't sound like
"a lot of bass". And why do you think that nobody in his right mind
would seek true bass from *any* speaker? It is an entirely reasonable
thing to seek.




No, try it this way round - why would people seeking 'true bass' from a
speaker choose the wrong tool for the job...??






Which Visatons do you have again? I've just looked at their web site,
and everything I can find has a separate treble unit of one sort or
another in the middle of the bass cone.


FRS8s in the Needles and B200s back in their boxes....

http://www.impactaudio.co.uk/speaker...b6ddb0ba26b286


Let's put this 'frequency extremes' thing to bed once and for all -
there
is
no shortage of high frequency with just about all the drivers I have
used/considered and which quote a top end of 18K or better and up to 30K
in
some instances. Bass is no worse than 'ordinary' speakers and is
dependent
on cabinet/room science, as you know better than I.....


Didn't we measure your speakers and find them rolling off severely
above 10kHz?



Read the numbers:

Lowther PM6C (30 - 20k)
Lowther EX3 (30 - 22k)
Fostex FE103E (fs - 22k)
Visaton B200 (fu - 18k)
Visaton FRS8-8 (80 - 20k)

None of the drivers I currently use quote a top end anything like as low
as
10k. Consequently, I take all these 'readings/measurements' and various
other figures with a pinch of salt - it what they *sound* like (overall)
to
me that counts...


I've read the numbers - and like you, I'm unimpressed by them. As you
say, what they sound like matters much more and for me a real,
dedicated tweeter produces a much cleaner, pleasanter sound that a
single FR unit.




OK, just for you ( I know how much you like them) I've recorded the track
that immediately springs to mind for 'isolated' treble. It has been posted
before but I think you will find it is better miked now:

http://www.apah69.dsl.pipex.com/show/mic.JPG

- than it was before, on the poor little lapel mic! There's a lot less
'room' in the equation (almost none) which, of course, means the bass is
less than I get to hear for real as my bass comes off the walls, but there
is at least some indication of it. See below for the relevance....

http://www.apah69.dsl.pipex.com/show/Track10.mp3

I do not ordinarily like to hear 'treble' or 'bass', I like a sound which
Swim describes as *balanced* - that is 'cohesive' in audio terms, I
believe...?? The only exception to that is a 'proper organ' when I like to
*feel* the bass and, as I have said 28,000 times now, I don't expect to get
that from horns the size I have in the room the size mine is. (Later on, if
I get time, I'm going to hook up to the Ruarks and 'revisit' a couple of my
organ discs!!)

In fact, as I have said before, I quickly accomodate the various sounds from
my system and various radios (car/bathroom/garage) very quickly and tend not
to be listening to the kit. Best example of this is out in my garage where I
frequently enjoy R3 of an afternoon from a decent little Roberts radio - I
hear the music only and never give a thought to the radio itself..!!





As for bass, we also found that there was nothing below
about 60Hz - which makes total sense for the dimensions you have. I
have a tiny pair of bookshelves in front f me (KEF Cresta 10) which do
at least as well, probably rather better. Top end of course - no
comparison.



You are forgetting that I've had various examples of the following makes
of
speakers he

KEF
Tannoy
Wharfedale
Quad
Dynaudio
Ruark
JM-Labs
B&W
Jamo (Concert 8s)
Rogers

plus probably others I can't recall...??


Yup, some good names there.




Yes, all the same but different with skightly different strengths and
weaknesses - all of which I could live with if I had to, all of which I have
rejected...





See again:

http://www.apah69.dsl.pipex.com/show/LS35a.JPG

for an example of a speaker with 'no frequency extremes' which would
appear
to benefit from the use of a subwoofer in *no different way* to many
(maybe
most) FR designs - *if* you need yer trousers flapped...!!

The LS35a was designed for a purpose, and it fitted that very well. It
was for monitoring BBC programme material. Extremes of bass and treble
formed no part of the BBC output, so didn't need monitoring. Sure
people adopted them for home listening, at which point the
shortcomings started revealing themselves, so subwoofers got added.



I've not had anything like as much exposure to subs - all I can say is
I've
never yet had one here that I didn't switch off after a few minutes...


Nor had I until I bit the bullet and built my own. Now I really can't
tell it is on until I turn it off IYSWIM.




You'll get away with that - if I had posted it, I'd damn soon have a couple
of hot little faces telling me that it's probably 'builders's blindness' or
somesuch....





One visitor here, on hearing my Pinkies...

http://www.apah69.dsl.pipex.com/busc.../buschorns.htm

"Whoah! They've got more bass than my AEs...!!"

(The pinkies have 4" FR drivers and the AEs are/were 3-way floorstanding
speakers with 165mm bass units - EVO 3s??)



Yup, and we both know what that is all about. It is why those really
cheap home cinema kits can have subwoofers that go no lower than 100Hz
- make it boom a bit and it sounds like bass - until you hear the real
thing, that is. You really do need to think some more about that
subwoofer, you know ;-)



See above - if it were not for the plethora of organ music I have stacked
here, waiting for serious attention, I wouldn't entertain the idea for a
moment. I have been fighting *too much bass* in my very small room for a
while now, but any time I need my trousers flapped I'd only have to drag
my
Paladins the length of the house....


You don't get "too much bass" with a good sub.




Yes, I *do* know that and obviously tried the various subs here at
'inaudible' levels....


The system may even
sound a little lighter in bass, because you have the opportunity to
tune out the upper-bass hump that is currently propping up the
illusion of bass.



OK, here's one for you and for 'someone else' to throw rocks at: Last week,
quite out of the blue, I bumped into an old friend I hadn't seen for about
TWENTY years!! And, yes, he lives only a couple of miles from here, which
would have been a tragedy (as we have been here ourselves for getting for 10
years) *if* we had a lot more in common than we appear now to do!! (??) (I'm
getting a little too old for ****-ups and skirt-chasing now!! ;-)

Naturally, he got a demo of my kit (for at least 20 seconds - no interest in
it whatsoever) of the track posted above when I got the standard 'Woah,
that's nice and clear!' immediate reaction and then 'Here's comes a bit of
'bottom end!' a few moments later. Then switch off and no further reference
to it.

It's people's immediate reactions that tell me what I want to know - by the
time it's got to mention of terms like the 'upper mid' and all that old
******** I stop taking note. Strangers and indifferent types are more use
than 'fellow enthusiasts' in this respect...

Indicate when you have got/heard that track and I'll post it again recorded
from my Ruarks a little later on, for comparison....




Keith G November 20th 06 09:17 AM

What's your view of speaker crossovers?
 

"Dave Plowman (News)" wrote in message
...
In article ,
Keith G wrote:
Frankly, the numbers don't mean very much at all in the real world,
other than to a designer or manufacturer - for example, the frequency
range of a full orchestra is only about 40-14k and the *dink dink* 'Top
C' on a piano is only about 4096 Hz with only weak (inaudible for most
purposes) harmonics extending beyond 10 kHz....


If the harmonics were inaudible it would sound like a sine wave. So
nothing like a piano at all.

I'm amazed at you. You go on and on about the subtle differences you claim
to hear then come up with rubbish like this...




Plowie, you really got to stop *making things up* - it does you no credit
whatsoever! I have never posted that I can hear subtle differences - quite
the reverse (as ****ing usual), in fact I have only just this moment replied
to Don to effectively say I accomodate differences almost too quickly to
make other than 'night and day' comparisons between subtle changes in kit.
It's *why* I ask the milkman for his opinion....

....except that we don't have a milkman...

As the the utter ******** regarding the mention of Top C on a piano - do you
think I *invented* the phrase 'inaudible for most purposes'...?? Or, to put
it your way: So you don't know that progressively higher orders of harmonics
become increasingly inaudible...??

Now stop clutching at straws and go see my reply to Don - lots for you to
get your knife into there....




Keith G November 20th 06 09:22 AM

What's your view of speaker crossovers?
 

"Keith G" wrote


Indicate when you have got/heard that track and I'll post it again
recorded from my Ruarks a little later on, for comparison....




Also, what do you reckon to this little bugger:

http://cgi.ebay.co.uk/ws/eBayISAPI.d...0656&rd=1&rd=1


- that's about 200 quid less than normal retail and half the price of a
Russian Nevaton equivalent (which are unobtainable anyway)....??

One or two good reviews on the Net from people who I suspect wouldn't *dare*
to back a crock in public (independent Yank recording studios, mostly), here
and there...??




Don Pearce November 20th 06 09:30 AM

What's your view of speaker crossovers?
 
On Mon, 20 Nov 2006 10:04:04 -0000, "Keith G"
wrote:


I'm wary of terms like 'true bass' given that, at best, 'hifi' is a
*depiction* of 'real sound' - but, surely it doesn't need to be repeated
that nobody in his right mind would seek 'true bass' from horns or
bookshelf
speakers....???


It does sound a lot nicer, though. And it certainly doesn't sound like
"a lot of bass". And why do you think that nobody in his right mind
would seek true bass from *any* speaker? It is an entirely reasonable
thing to seek.




No, try it this way round - why would people seeking 'true bass' from a
speaker choose the wrong tool for the job...??


That I can see. I do want true bass though - I'm different, I suppose.



OK, just for you ( I know how much you like them) I've recorded the track
that immediately springs to mind for 'isolated' treble. It has been posted
before but I think you will find it is better miked now:

http://www.apah69.dsl.pipex.com/show/mic.JPG

- than it was before, on the poor little lapel mic! There's a lot less
'room' in the equation (almost none) which, of course, means the bass is
less than I get to hear for real as my bass comes off the walls, but there
is at least some indication of it. See below for the relevance....

http://www.apah69.dsl.pipex.com/show/Track10.mp3


This is really hard to judge, because the track is entirely synthetic
- I have no internal sound picture to compare it with. It does seem to
me though that the bottom end of the bass just isn't there.

I do not ordinarily like to hear 'treble' or 'bass', I like a sound which
Swim describes as *balanced* - that is 'cohesive' in audio terms, I
believe...?? The only exception to that is a 'proper organ' when I like to
*feel* the bass and, as I have said 28,000 times now, I don't expect to get
that from horns the size I have in the room the size mine is. (Later on, if
I get time, I'm going to hook up to the Ruarks and 'revisit' a couple of my
organ discs!!)


Balance is everything - you should be unaware of all parts of the
spectrum. If you are noticing treble or bass, they are simply wrong.
That is all part of my advice to people buying speakers - if they make
you go "wow", just walk on by - they are crap.

In fact, as I have said before, I quickly accomodate the various sounds from
my system and various radios (car/bathroom/garage) very quickly and tend not
to be listening to the kit. Best example of this is out in my garage where I
frequently enjoy R3 of an afternoon from a decent little Roberts radio - I
hear the music only and never give a thought to the radio itself..!!

I have a couple of Roberts of my own for exactly those purposes, and
they are great. But if I am sitting down of an evening to actually
listen to some music, they simply don't do the job.

KEF
Tannoy
Wharfedale
Quad
Dynaudio
Ruark
JM-Labs
B&W
Jamo (Concert 8s)
Rogers

plus probably others I can't recall...??


Yup, some good names there.




Yes, all the same but different with skightly different strengths and
weaknesses - all of which I could live with if I had to, all of which I have
rejected...

Well, from my point of view it is a shame you didn't persevere.




You'll get away with that - if I had posted it, I'd damn soon have a couple
of hot little faces telling me that it's probably 'builders's blindness' or
somesuch....


I know all too well about builder's blindness. But there is slightly
more to it than that. I built a design that simply isn't available to
the manufacturer, and guarantees a smooth response with no honking
humps.


OK, here's one for you and for 'someone else' to throw rocks at: Last week,
quite out of the blue, I bumped into an old friend I hadn't seen for about
TWENTY years!! And, yes, he lives only a couple of miles from here, which
would have been a tragedy (as we have been here ourselves for getting for 10
years) *if* we had a lot more in common than we appear now to do!! (??) (I'm
getting a little too old for ****-ups and skirt-chasing now!! ;-)

Naturally, he got a demo of my kit (for at least 20 seconds - no interest in
it whatsoever) of the track posted above when I got the standard 'Woah,
that's nice and clear!' immediate reaction and then 'Here's comes a bit of
'bottom end!' a few moments later. Then switch off and no further reference
to it.


That is exactly the response I would expect. The initial reaction to
any system with an exaggeration of any particular part of the
frequency range is fairly predictable. That is well known to recording
engineers who use the fact to inject the right mood into their
product.

Indicate when you have got/heard that track and I'll post it again recorded
from my Ruarks a little later on, for comparison....



Bring 'em on!

d

--
Pearce Consulting
http://www.pearce.uk.com

Don Pearce November 20th 06 09:34 AM

What's your view of speaker crossovers?
 
On Mon, 20 Nov 2006 10:22:47 -0000, "Keith G"
wrote:


"Keith G" wrote


Indicate when you have got/heard that track and I'll post it again
recorded from my Ruarks a little later on, for comparison....




Also, what do you reckon to this little bugger:

http://cgi.ebay.co.uk/ws/eBayISAPI.d...0656&rd=1&rd=1


- that's about 200 quid less than normal retail and half the price of a
Russian Nevaton equivalent (which are unobtainable anyway)....??

One or two good reviews on the Net from people who I suspect wouldn't *dare*
to back a crock in public (independent Yank recording studios, mostly), here
and there...??



I reckon you now have your fair share of cardioids - and you have much
greater flexibility when you have them in separate bodies. I'd leave
this monster where it is.

d

--
Pearce Consulting
http://www.pearce.uk.com

Dave Plowman (News) November 20th 06 09:56 AM

What's your view of speaker crossovers?
 
In article ,
Keith G wrote:
As the the utter ******** regarding the mention of Top C on a piano - do
you think I *invented* the phrase 'inaudible for most purposes'...??


Doesn't matter whether you did or not - quoting it would suggest you
believe it.

Or, to put it your way: So you don't know that progressively higher
orders of harmonics become increasingly inaudible...??


Do you understand what a sine wave is?

If the harmonics from a musical instrument were unimportant then top C
from a piano would sound exactly the same as from a violin. Of course
perhaps they do on your setup...

--
*Middle age is when it takes longer to rest than to get tired.

Dave Plowman London SW
To e-mail, change noise into sound.

Keith G November 20th 06 10:23 AM

What's your view of speaker crossovers?
 

"Don Pearce" wrote in message
...
On Mon, 20 Nov 2006 10:22:47 -0000, "Keith G"
wrote:


"Keith G" wrote


Indicate when you have got/heard that track and I'll post it again
recorded from my Ruarks a little later on, for comparison....




Also, what do you reckon to this little bugger:

http://cgi.ebay.co.uk/ws/eBayISAPI.d...0656&rd=1&rd=1


- that's about 200 quid less than normal retail and half the price of a
Russian Nevaton equivalent (which are unobtainable anyway)....??

One or two good reviews on the Net from people who I suspect wouldn't
*dare*
to back a crock in public (independent Yank recording studios, mostly),
here
and there...??



I reckon you now have your fair share of cardioids - and you have much
greater flexibility when you have them in separate bodies. I'd leave
this monster where it is.




I wasn't thinking for use as a simple cardoid - it's multi-pattern/stereo
and appears to be quite good for various techniques like M/S and X/Y
(Stereosonic/Blumlein??):

http://www.studioprojectsusa.com/pdf...CTS%20LSD2.pdf

http://www.studioprojectsusa.com/lsd2.html


(No funds atm in any case.....)


OK, I'll set up on the Ruarks now - although a quick burst of the same track
just now sounded like ****, I thought....

While you're waiting, have a pop at this - play it twice, the joke's OK but
the laughter just cracks me up!! :-)

http://www.apah69.dsl.pipex.com/show...e-cricket1.mp3


(Kerry O'Keefe :-)





Don Pearce November 20th 06 10:38 AM

What's your view of speaker crossovers?
 
On Mon, 20 Nov 2006 11:23:13 -0000, "Keith G"
wrote:


"Don Pearce" wrote in message
...
On Mon, 20 Nov 2006 10:22:47 -0000, "Keith G"
wrote:


"Keith G" wrote


Indicate when you have got/heard that track and I'll post it again
recorded from my Ruarks a little later on, for comparison....



Also, what do you reckon to this little bugger:

http://cgi.ebay.co.uk/ws/eBayISAPI.d...0656&rd=1&rd=1


- that's about 200 quid less than normal retail and half the price of a
Russian Nevaton equivalent (which are unobtainable anyway)....??

One or two good reviews on the Net from people who I suspect wouldn't
*dare*
to back a crock in public (independent Yank recording studios, mostly),
here
and there...??



I reckon you now have your fair share of cardioids - and you have much
greater flexibility when you have them in separate bodies. I'd leave
this monster where it is.




I wasn't thinking for use as a simple cardoid - it's multi-pattern/stereo
and appears to be quite good for various techniques like M/S and X/Y
(Stereosonic/Blumlein??):

http://www.studioprojectsusa.com/pdf...CTS%20LSD2.pdf

http://www.studioprojectsusa.com/lsd2.html


(No funds atm in any case.....)

Well, I would still get another pair of mics - omni probably. You can
still do all the miking techniques with what you have. Also this one
is a bit noisy.

The frog is saved - thank you!

d

--
Pearce Consulting
http://www.pearce.uk.com

Keith G November 20th 06 11:07 AM

What's your view of speaker crossovers?
 

"Dave Plowman (News)" wrote in message
...
In article ,
Keith G wrote:
As the the utter ******** regarding the mention of Top C on a piano - do
you think I *invented* the phrase 'inaudible for most purposes'...??


Doesn't matter whether you did or not - quoting it would suggest you
believe it.

Or, to put it your way: So you don't know that progressively higher
orders of harmonics become increasingly inaudible...??


Do you understand what a sine wave is?

If the harmonics from a musical instrument were unimportant then top C
from a piano would sound exactly the same as from a violin. Of course
perhaps they do on your setup...




Didn't take you long, did it...??

:-)





Keith G November 20th 06 11:09 AM

What's your view of speaker crossovers?
 

"Don Pearce" wrote in message
...
On Mon, 20 Nov 2006 11:23:13 -0000, "Keith G"
wrote:


"Don Pearce" wrote in message
.. .
On Mon, 20 Nov 2006 10:22:47 -0000, "Keith G"
wrote:


"Keith G" wrote


Indicate when you have got/heard that track and I'll post it again
recorded from my Ruarks a little later on, for comparison....



Also, what do you reckon to this little bugger:

http://cgi.ebay.co.uk/ws/eBayISAPI.d...0656&rd=1&rd=1


- that's about 200 quid less than normal retail and half the price of a
Russian Nevaton equivalent (which are unobtainable anyway)....??

One or two good reviews on the Net from people who I suspect wouldn't
*dare*
to back a crock in public (independent Yank recording studios, mostly),
here
and there...??



I reckon you now have your fair share of cardioids - and you have much
greater flexibility when you have them in separate bodies. I'd leave
this monster where it is.




I wasn't thinking for use as a simple cardoid - it's multi-pattern/stereo
and appears to be quite good for various techniques like M/S and X/Y
(Stereosonic/Blumlein??):

http://www.studioprojectsusa.com/pdf...CTS%20LSD2.pdf

http://www.studioprojectsusa.com/lsd2.html


(No funds atm in any case.....)

Well, I would still get another pair of mics - omni probably. You can
still do all the miking techniques with what you have. Also this one
is a bit noisy.



OK.

Ignore me - I'm only musing out loud.....






Keith G November 20th 06 11:20 AM

What's your view of speaker crossovers?
 

"Don Pearce" wrote in message
...
On Mon, 20 Nov 2006 10:04:04 -0000, "Keith G"
wrote:



OK, here's one for you and for 'someone else' to throw rocks at: Last
week,
quite out of the blue, I bumped into an old friend I hadn't seen for about
TWENTY years!! And, yes, he lives only a couple of miles from here, which
would have been a tragedy (as we have been here ourselves for getting for
10
years) *if* we had a lot more in common than we appear now to do!! (??)
(I'm
getting a little too old for ****-ups and skirt-chasing now!! ;-)

Naturally, he got a demo of my kit (for at least 20 seconds - no interest
in
it whatsoever) of the track posted above when I got the standard 'Woah,
that's nice and clear!' immediate reaction and then 'Here's comes a bit of
'bottom end!' a few moments later. Then switch off and no further
reference
to it.


That is exactly the response I would expect. The initial reaction to
any system with an exaggeration of any particular part of the
frequency range is fairly predictable. That is well known to recording
engineers who use the fact to inject the right mood into their
product.




No....

The truth is the speakers are so *clear and direct* it's quite breathtaking.
They are 'stunning' in a totally *non spectacular* way - ie they are so
comfortable to listen to....



Indicate when you have got/heard that track and I'll post it again
recorded
from my Ruarks a little later on, for comparison....



Bring 'em on!



OK, here we go - this is the setup:

http://www.apah69.dsl.pipex.com/show...Setup%2001.JPG

http://www.apah69.dsl.pipex.com/show...Setup%2002.JPG

and here is the track:

http://www.apah69.dsl.pipex.com/show...,%20SE1As).mp3

....and here's the Lowther track again for direct comparison (if anyone else
is interested):

http://www.apah69.dsl.pipex.com/show/Track10.mp3


Now, before you tell me there's no bass on the Ruark track either - when I
started it off I went over to the back door for a fag (as I do) and rested
my elbow on the (patio door) pull handle. At about 1 minute in, the fekking
door started thrumming and I was getting the bass through my elbow as well
as hearing it!! (The Paladins quote 38 Hz at the bottom end...)

As it's ****ing with rain here (on and off) I don't feel too guilty about
this sort of dicking around - while I'm set up on the Ruarks what else would
you rather hear? Gimme a slot and I'll see what I've got that best fits it!
(Sorry if it's a bit sad, but I enjoy it and it's good practice for me!! ;-)

Now, if nothing else, the recordings *look* a lot better these days, don't
they?? :-)




Arny Krueger November 20th 06 11:38 AM

What's your view of speaker crossovers?
 
"Dave Plowman (News)" wrote in
message

In article ,
Keith G wrote:
Frankly, the numbers don't mean very much at all in the
real world, other than to a designer or manufacturer -
for example, the frequency range of a full orchestra is
only about 40-14k and the *dink dink* 'Top C' on a piano
is only about 4096 Hz with only weak (inaudible for most
purposes) harmonics extending beyond 10 kHz....


If the harmonics were inaudible it would sound like a
sine wave. So nothing like a piano at all.

I'm amazed at you. You go on and on about the subtle
differences you claim to hear then come up with rubbish
like this...


More to the point, is the lack of quality of reproduction that we get at
high frequencies by single-way drivers.

There are hard physical laws that say you can't have deep bass and high
efficiency and small size at the same time. If you add good dynamic range,
then things get that much more difficult.

In a similar fashion, you can't have deep bass, extended treble, smooth
response, and broad dispersion at the same time.

I still remember doing some frequency response measurements on a "full
range" JBL 15" driver in engineerings school in the middlee 1960s. Believe
it or not, it had response at 13 KHz. But only on-axis. And only after a
number of audible dips and peaks at lower frequencies.



Arny Krueger November 20th 06 11:43 AM

What's your view of speaker crossovers?
 
"Don Pearce" wrote in message

On Mon, 20 Nov 2006 10:22:47 -0000, "Keith G"
wrote:


Also, what do you reckon to this little bugger:


http://cgi.ebay.co.uk/ws/eBayISAPI.d...0656&rd=1&rd=1


Seems to be a convenient package. It looks neat.

Self-noise is actually high enough to be of concern.

For half the price I'd have a pair of Rhode NT1A, which I indeed already
have. Quieter, and probably smoother.

I have a mount for coincident micing that cost about $15.

- that's about 200 quid less than normal retail and half
the price of a Russian Nevaton equivalent (which are
unobtainable anyway)....??


One or two good reviews on the Net from people who I
suspect wouldn't *dare* to back a crock in public
(independent Yank recording studios, mostly), here and
there...??


I reckon you now have your fair share of cardioids - and
you have much greater flexibility when you have them in
separate bodies. I'd leave this monster where it is.





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