how good are class D amplifiers?
 

"Serge Auckland" wrote


I don't understand the statement about the woolly bass of the TLs, as
the IMFs have about the cleanest tightest bass immaginable.


Let me, at this point and for the moment, change that to 'woolliness in
the bass that is available from the TLs' - as I said earlier, much of
Classic *FM* is virtually unlistenable and I have to swap to a DAB
receiver to listen to it - there are a number of factors at play here
and it is probably not the speakers on their own...


Maybe they are
going sufficiently far down that they set off room resonances that
your horns don't go near.


Possibly - the thing that sent me off down the 'horns' trail in the
first place was being unable to find 'ordinary speakers' that didn't
boom too much in the room.


Have you tried them in your large room?


No, there's only so much heaving about I'm prepared to do - I expect
they would sound fine, as do the Ruarks which were *too much* for my
small room.

how good are class D amplifiers?
 

"Dave Plowman (News)" wrote in message
...
In article ,
Keith G wrote:
There is no 'missing top' on any of the FR drivers I use here.

Depends on what you mean by 'missing'. And top.


In this instance, revealing no lack of 'treble' in a direct comparison
between the Lowther FR drivers in the Fidelios and the 'wideband' TLS80s
with their various tweeters and supertweeters.....

how good are class D amplifiers?
 

In article ,
Keith G wrote:
Considering how much you mention the things
you've built.

You mean how much *you* mention the things I've built...??

How would I know what you'd built if you hadn't mentioned it here? And
usually in all the gory detail? Not that I've any objection to that, but
why write about anything you don't want commented on?

--
*Two wrongs are only the beginning *

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

how good are class D amplifiers?
 

In article ,
Keith G wrote:

"Dave Plowman (News)" wrote in message
...
In article ,
Keith G wrote:
There is no 'missing top' on any of the FR drivers I use here.

Depends on what you mean by 'missing'. And top.


In this instance, revealing no lack of 'treble' in a direct comparison
between the Lowther FR drivers in the Fidelios and the 'wideband' TLS80s
with their various tweeters and supertweeters.....

But how? Just by a simple listening test by yourself? If so, you should
make that clear. Also what prog material you're using. And don't things
like off axis response matter to you? They effect other things that you do
hear too.

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

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

how good are class D amplifiers?
 

"Dave Plowman (News)" wrote in message
...
In article ,
Keith G wrote:
Considering how much you mention the things
you've built.

You mean how much *you* mention the things I've built...??

How would I know what you'd built if you hadn't mentioned it here? And
usually in all the gory detail? Not that I've any objection to that,
but
why write about anything you don't want commented on?


Comment all you like but it seems to me you mention it more than I do...

how good are class D amplifiers?
 

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

"Dave Plowman (News)" wrote in message
...
In article ,
Keith G wrote:
There is no 'missing top' on any of the FR drivers I use here.

Depends on what you mean by 'missing'. And top.


In this instance, revealing no lack of 'treble' in a direct
comparison
between the Lowther FR drivers in the Fidelios and the 'wideband'
TLS80s
with their various tweeters and supertweeters.....

But how? Just by a simple listening test by yourself?



Yes, of course - it's all I'm interested in. When the figures have been
important Don and others have been kind enough to supply them, along
with pix of traces &c.



If so, you should
make that clear.


How can that not be clear? - Usually I supply a couple of clips like
these:

http://www.apah69.dsl.pipex.com/show/FIDELIOSmp3.mp3

http://www.apah69.dsl.pipex.com/show/TLS80smp3.mp3


(The clue is in the track titles...)



Also what prog material you're using.


In that instance, I have no idea what it is - but what does it matter,
it's a straight comparison..??


And don't things
like off axis response matter to you? They effect other things that
you do
hear too.


Possibly/maybe - hardly an issue to me though, I listen to a lot of
stuff from the next room in any case!!

how good are class D amplifiers?
 

In article ,
Keith G wrote:
Also what prog material you're using.


In that instance, I have no idea what it is - but what does it matter,
it's a straight comparison..??

Because if you choose something with no extreme HF it won't matter much if
the speakers can't handle it. Same with bass.

--
*Do infants enjoy infancy as much as adults enjoy adultery? *

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

how good are class D amplifiers?
 

"Dave Plowman (News)" wrote in message
...
In article ,
Keith G wrote:
Also what prog material you're using.


In that instance, I have no idea what it is - but what does it
matter,
it's a straight comparison..??

Because if you choose something with no extreme HF it won't matter
much if
the speakers can't handle it. Same with bass.


Fair comment, but what I am principally concerned with is 'normal music'
at fairly normal levels and remember I'm more vinyl than digital.
Anyway, I've posted a couple of fairly dire sweep tones (not at all easy
to do):

http://www.apah69.dsl.pipex.com/show/FidelioSweep.wav

http://www.apah69.dsl.pipex.com/show/TLS80Sweep.wav


But I've no idea what they tell us, if anything at all..??

how good are class D amplifiers?
 

"Keith G" wrote

Fair comment, but what I am principally concerned with is 'normal
music' at fairly normal levels and remember I'm more vinyl than
digital. Anyway, I've posted a couple of fairly dire sweep tones (not
at all easy to do):

http://www.apah69.dsl.pipex.com/show/FidelioSweep.wav

http://www.apah69.dsl.pipex.com/show/TLS80Sweep.wav



Forgot to say I left the announcement of the *next* track on as a
'reference point'...!!

how good are class D amplifiers?
 

"Keith G" wrote in message
...

"Keith G" wrote

Fair comment, but what I am principally concerned with is 'normal music'
at fairly normal levels and remember I'm more vinyl than digital. Anyway,
I've posted a couple of fairly dire sweep tones (not at all easy to do):

http://www.apah69.dsl.pipex.com/show/FidelioSweep.wav

http://www.apah69.dsl.pipex.com/show/TLS80Sweep.wav



Forgot to say I left the announcement of the *next* track on as a
'reference point'...!!

Are these a sine-wave sweep, white noise or pink noise? Reason I ask is that
the sweeps all droop towards the top end, the Fidelios fall away
drastically, so I'd like to know what is *should* look like.

S.