What do you do with a *lively* room?
 

"Eeyore" wrote in message
...


Keith G wrote:

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

"Dave Plowman (News)" wrote in message
...
In article ,
Eeyore wrote:
Serge, no-one is more aware that there's 'nothing new under the
(audio) sun' than me - my amps date back to the 20s and 30s
(design)
and my speakers feature drivers that have been in *continuous
production* for the last 50 years in a design probably just as
old!!

From what I've heard, they sound like it too !

I can't remember the last single driver pro monitoring speaker, but
the
BEEB had gone to a twin unit in the AM only days...

I suspect (almost certain) that if I *bustled* I could have a pair of
LS3/5As here by noon today...

With a decent sub properly 'crossed over' they take some beating in a
poor
room - they are one of the least position influenced designs. Assuming
you
can find a pair still within spec. They aren't that long lived.

--
*Does fuzzy logic tickle? *

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

I suspect the Ruark Sabres and most Dynaudio Contour models would give
them
a good run for their money, but it's interesting that is seems perfectly
acceptable that all these bookshelf (and many/most commercial
floorstanders)
need a sub to produce the 'bottom octave' but not so acceptable in the
case
of 'FR' single driver speakers...???

Funny that....

Not really.

It's the *HF* where single drivers really fall over.



Define 'fall over' - like *not* remain in production for over 50 years or
summat..??

What do you do with a *lively* room?
 

"Eeyore" wrote in message
...


Keith G wrote:

"Dave Plowman (News)" wrote in message
Keith G wrote:
With a decent sub properly 'crossed over' they take some beating in
a
poor room - they are one of the least position influenced designs.
Assuming you can find a pair still within spec. They aren't that
long
lived.

First, any chance of configuring your newsreader so it removes sigs?

No way that I know of, or I would have done it years ago!

I suspect the Ruark Sabres and most Dynaudio Contour models would give
them a good run for their money, but it's interesting that is seems
perfectly acceptable that all these bookshelf (and many/most
commercial
floorstanders) need a sub to produce the 'bottom octave' but not so
acceptable in the case of 'FR' single driver speakers...???

Only if it lives up to its title of 'full range'. But then you've still
got the problem of the top end.

I've had any number of modern, reputed, 'ferrofluid' tweeters here and
even
Coles 'supertweeters - I do not think the top end of the FR drivers lacks
anything of importance.

AHEM ! Where do your ears' HF response finish ?




A damn sight lower than the 'claimed/quoted' figures of 20kHz - 22.5 kHz for
the top end of all the Lowther range....


The phrase 'fullrange' is supposed to refer to
'audible limits', not the theoretical limits of flat signal
reproduction/amplification/response...

No it doesn't.


Does in my book...


Try a leaf or ribbon tweeter btw.


Why? See above (and above)....

What do you do with a *lively* room?
 

In article ,
Keith G wrote:
I'll do summat a bit more meaningful with better mic placement (it
didn't move from what you see in the pic) and level matching in due
course, I have the LS3/5s for a week now....

Take it your driving them with a proper amplifier not one of these
Chinese SETI thingies?...

Why, can't they *take it*....???

They need a reasonably powerful amp which can drive their relatively high
impedance. Which usually means about 50 watts into 4 ohms.

--
*It was all so different before everything changed.

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

What do you do with a *lively* room?
 

"Dave Plowman (News)" wrote in message
...
In article ,
Keith G wrote:
I'll do summat a bit more meaningful with better mic placement (it
didn't move from what you see in the pic) and level matching in due
course, I have the LS3/5s for a week now....

Take it your driving them with a proper amplifier not one of these
Chinese SETI thingies?...

Why, can't they *take it*....???

They need a reasonably powerful amp which can drive their relatively high
impedance. Which usually means about 50 watts into 4 ohms.



Yes, I've already noticed they need a lot of wick - at least 12 o' clock on
the volume with my Denon PMA655R (which claims 2 x 50W into 8 ohms/2 x 85W
into 4 ohms) to anything like match the level of the Lowther/Visaton FR
speakers on a 10 (8?) Watt 300B SET at the 9 o' clock mark or even slightly
less....!!

Incredibly, I am told these are homemade (I should be able to build boxes
like these???) and that the spec is T27s and B110Cs with a Stirling Sound
'Superpower' crossover which I am told is 'no TX, resistive matching to
tweeter' - is this anything like standard?


Re other recent posts elsewhere, while I was checking the Denon figures just
now I happened across the spec sheet for the Fostex FE83E 'FR' drivers.
'Reproduction Frequency Response' is stated as 'fs - 30 kHz'....

'HF falling down' again.....??

:-)





--
*It was all so different before everything changed.

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

What do you do with a *lively* room?
 

In article ,
Keith G wrote:
It's the *HF* where single drivers really fall over.

Define 'fall over' - like *not* remain in production for over 50 years
or summat..??

I know you don't like specs - although you quote them when it suits you -
but large cones can't deny the laws of physics.

--
*(on a baby-size shirt) "Party -- my crib -- two a.m

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

What do you do with a *lively* room?
 

Keith G wrote:

"Eeyore" wrote in message
Keith G wrote:

a good run for their money, but it's interesting that is seems perfectly
acceptable that all these bookshelf (and many/most commercial
floorstanders)
need a sub to produce the 'bottom octave' but not so acceptable in the
case of 'FR' single driver speakers...???

Funny that....

Not really.

It's the *HF* where single drivers really fall over.

Define 'fall over' - like *not* remain in production for over 50 years or
summat..??

Like not have any to talk of for example ?

Like beam it insanely ?

Graham

What do you do with a *lively* room?
 

"Dave Plowman (News)" wrote in message
...
In article ,
Keith G wrote:
It's the *HF* where single drivers really fall over.

Define 'fall over' - like *not* remain in production for over 50 years
or summat..??

I know you don't like specs - although you quote them when it suits you -


Sez TF who? I don't *dislike specs, I merely ignore them when they aren't
relevant like any other *normal* person...



but large cones can't deny the laws of physics.



Again, who's saying they can? (Always this old chestnut gets trotted out...)

But if you put a seriously strong magnet on a light, paper cone of even
about 8 inches diameter you can (did, in fact - play them) get stuff like
this:

http://www.apah69.dsl.pipex.com/show/Sample%2004.mp3

http://www.apah69.dsl.pipex.com/show/Sample%2005.mp3

http://www.apah69.dsl.pipex.com/show/Sample%2008.mp3


Now, how deep and growly is all of that? (*Really*...??)

Let's keep it real and drop all this 'no frequency extremes' horse**** or I
really *will* post some comparisons with the LS3/5s....

(Like they *do* have 'extreme' frequencies....??? ;-)




--
*(on a baby-size shirt) "Party -- my crib -- two a.m

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

What do you do with a *lively* room?
 

In article , Keith G
writes

"Dave Plowman (News)" wrote in message
...
In article ,
Keith G wrote:
I'll do summat a bit more meaningful with better mic placement (it
didn't move from what you see in the pic) and level matching in due
course, I have the LS3/5s for a week now....

Take it your driving them with a proper amplifier not one of these
Chinese SETI thingies?...

Why, can't they *take it*....???

They need a reasonably powerful amp which can drive their relatively high
impedance. Which usually means about 50 watts into 4 ohms.



Yes, I've already noticed they need a lot of wick - at least 12 o' clock on
the volume with my Denon PMA655R (which claims 2 x 50W into 8 ohms/2 x 85W
into 4 ohms) to anything like match the level of the Lowther/Visaton FR
speakers on a 10 (8?) Watt 300B SET at the 9 o' clock mark or even slightly
less....!!

Incredibly, I am told these are homemade (I should be able to build boxes
like these???) and that the spec is T27s and B110Cs with a Stirling Sound
'Superpower' crossover which I am told is 'no TX, resistive matching to
tweeter' - is this anything like standard?

Http://www.stirlingbroadcast.net/

he does a lot with the LS3/5A design.

And yes they are home-made capable. Wilmslow audio used to do them...

--
Tony Sayer

What do you do with a *lively* room?
 

In article ,
Keith G wrote:
Incredibly, I am told these are homemade (I should be able to build
boxes like these???)
I've got a 'homemade' pair too. From a kit produced by Chartwell. Rumour
has it they over-ordered the components in the hope of a large BBC
contract. But the cabinet was ready made - except for the Chartwell grill
badge. They were made available to BBC staff and some others but IIRC not
on general sale.

and that the spec is T27s and B110Cs with a
Stirling Sound 'Superpower' crossover which I am told is 'no TX,
resistive matching to tweeter' - is this anything like standard?

I'm afraid I don't understand the terms used. The 'proper' crossover uses
an adjustable autotransformer and crossover frequency to cater for slight
driver tolerances.

--
*I love cats...they taste just like chicken.

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

What do you do with a *lively* room?
 

On Sun, 10 Dec 2006 17:44:20 +0000 (GMT), "Dave Plowman (News)"
wrote:

In article ,
Keith G wrote:
Incredibly, I am told these are homemade (I should be able to build
boxes like these???)
I've got a 'homemade' pair too. From a kit produced by Chartwell. Rumour
has it they over-ordered the components in the hope of a large BBC
contract. But the cabinet was ready made - except for the Chartwell grill
badge. They were made available to BBC staff and some others but IIRC not
on general sale.

and that the spec is T27s and B110Cs with a
Stirling Sound 'Superpower' crossover which I am told is 'no TX,
resistive matching to tweeter' - is this anything like standard?

I'm afraid I don't understand the terms used. The 'proper' crossover uses
an adjustable autotransformer and crossover frequency to cater for slight
driver tolerances.

Also, don't forget that in the originals, the B110s were selected by
KEF for Fr.

d

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