Iain M Churches wrote:

"Arny Krueger" wrote in message
...
"Patrick Turner" wrote in message



I think it will be quite some time before anyone comes up with an
8 watt two transistor single ended amp which has no global NFB
and which sounds as well as a 300B amp when correctly set up.

Given the incredibly convoluted criteria used to establish that the 300B
amp sounds good...

I find it surprising that many of those who speak out so vehemently
against the SET have never actually heard one:-)

Iain

And they have probably never owned any.

But many who condemn 300B amps need to have 100 watts
and so a low power triode amp is not for them.
They need to know the thd is low, or they'll be complaining about that too.

I have a a single EL34 in triode ( 5 watts ) with 15 dB of NFB for my kitchen
radio
using a 1953 12" speaker in a reflex box with a dome tweeter.
I ordinarily use 0.25 watts. It sounds far better than any transistor rubbish.

A 300 watt SS amp sounds no better at a watt than the EL34.

Patrick Turner.

On Thu, 13 Jan 2005 20:00:58 +0200, "Iain M Churches"
wrote:


"Stewart Pinkerton" wrote in message
.. .

The paper design is already done, but I don't have much of a parts bin
these days, so construction will have to wait.

We could pass the hat round if you are a bit strapped:-)

Cash is not the problem - time is.
--

Stewart Pinkerton | Music is Art - Audio is Engineering

On Thu, 13 Jan 2005 21:01:46 +0200, "Iain M Churches"
wrote:

Andre's SET thread on RAT was of considerable interest to a great
number of people. There are many who would like to build Andre's
amp.

'Was' of interest? It's far from finished, so are you saying that
people have lost interest? :-)

In addition, Stewart has promised an equivalent amplifier in SS.

Please stop lying about this. You have been told at least twice that
no such promise was made. KISASS exists only on paper for the time
being.

It will be interesting to build both for evaluation and comparison.

It may, if only to illustrate that old truism of Albert Einstein:

Everything should be made as simple as possible - but no simpler.

Are you on some kind of crusade?
Yes that too - I favor high fidelity.

In that case, you should give up recording, immediately:-)

OK, be that way.

It's probably better if we try not to mention your recording
again.

Cordially,

Cordial - something smooth and cloying, with a sickly aftertaste.

It's probably better if we try not to mention your personality again.
--

Stewart Pinkerton | Music is Art - Audio is Engineering

On Fri, 14 Jan 2005 10:55:15 +1100, Patrick Turner
wrote:

I have a a single EL34 in triode ( 5 watts ) with 15 dB of NFB for my kitchen
radio
using a 1953 12" speaker in a reflex box with a dome tweeter.
I ordinarily use 0.25 watts. It sounds far better than any transistor rubbish.

That sort of brain-dead bull**** lowers your credibility.

A 300 watt SS amp sounds no better at a watt than the EL34.

And no worse, if well designed.
--

Stewart Pinkerton | Music is Art - Audio is Engineering

In article , Iain M Churches
wrote:

"Jim Lesurf" wrote in message
...


Listening to single instruments, or to ones where the players may
adapt their pitch whilst playing may not show up low-order distortion
as clearly as other combinations of instruments.

Perhaps my meaning was unclear. I followed the first violin within the
quartet. I was unable to listen to single instruments. All players,
with the exception of pianists, and players of some percussion
instruments have the ability adapt their pitch, so I am not clear what
you mean by your statement. Are you referring to intonation?

I'm not sure what would be the correct term.

My point is that if the players/instruments play chords, etc, keeping
strictly to the pre-agreed tuning system, then the results in terms of
anharmonic components generated by distortion will depend on the tuning
system that have adopted. So equal tempering will give different results to
other systems. Depending on such details, and the music, anharmonics
generated may be more or less noticable and more or less acceptable.
Question of what the ear finds 'consonant' or 'harsh' as well as the actual
levels of distortion-created components.

However if they adapt whilst playing to keep the relative pitches in simple
integer ratios, then the above effect will be reduced.

Thus the results would depend a lot on the actual performance you were
listening to. Some might show up distortions more clearly than others.

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

In article , Iain M Churches
wrote:



Andre's SET thread on RAT was of considerable interest to a great number
of people. There are many who would like to build Andre's amp.

Afraid I don't know anything about "Andre's" amp (or, indeed, Andre). Can
you give me a URL for a webpage that shows the circuit diagram and specs,
etc?

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

"Stewart Pinkerton" wrote in message
...
On Thu, 13 Jan 2005 21:01:46 +0200, "Iain M Churches"
wrote:

Andre's SET thread on RAT was of considerable interest to a great
number of people. There are many who would like to build Andre's
amp.

'Was' of interest? It's far from finished, so are you saying that
people have lost interest? :-)

It still is one of the best topics on RAT.

In addition, Stewart has promised an equivalent amplifier in SS.

Please stop lying about this. You have been told at least twice that
no such promise was made. KISASS exists only on paper for the time
being.

So, what's keeping you:? :-)


Cordial - something smooth and cloying, with a sickly aftertaste.
Incorrect:
Cordial (noun) = flavoured and sweetened drink made from fruit.
Cordially = with warmth and sincerety.

On with the Noddy hat, Stewart:-)

Iain

Jim Lesurf wrote:
In article , Iain M Churches
wrote:


"Jim Lesurf" wrote in message
...

Well, one of the aims of the kind of points I make (e.g. about o/p
impedance) is to see if it may be possible to establish that the
'cause' of the preference might be due to an identifiable factor
which could then be replicated - if people so choose - with amp
designs that do not share the power limitations or practical
difficulties of a SET.



People who choose and listen to SET amps probably do not realise that
power limitations or practical difficulties which you mention, even
exist, given the type of music to which they listen on these amplifiers.


I am not sure. Valve amps and SET seem to be well-recommended at times in
magazines, and my impression is that this is often for all kinds of music.
The reviews do sometimes seem to me to use rock/pop of kinds I suspect
might be 'unsuitable', but I'm not in a position to judge as I don't listen
to these types of music a great deal.

Hence the recommendations do not seem to be based on, say, just
modest-volume small acoustic classic/jazz.

Although there may well be a distinction here between what magazine
reviewers recommend, and what people end up actually choosing to buy/use.

Slainte,

Jim

My recent experience was based on tracks from the eponymous Paul Simon
album. The SET amplifier managed to produce an absolutely spellbinding
rendition of instruments and vocal. It was at a reasonable level (normal
conversation possible) using a good record, record player and large low
efficiency (BandW) speakers.

The only limitation I could pick up was loudness - it didn't exactly
distort when switched up, more a form of compression, and ultimately
wouldn't go very loud with low efficiency speakers.

Rob

"Stewart Pinkerton" wrote in message
...

It's probably better if we try not to mention your personality again.

Can we still discuss your prospects as a digital console designer
with Neve International Ltd? :-)

Iain

"Iain M Churches" wrote in message
...

"Stewart Pinkerton" wrote in message
...

It's probably better if we try not to mention your personality again.

Can we still discuss your prospects as a digital console designer
with Neve International Ltd? :-)

Iain


That would be NIL? (Neve Intnl. Ltd) :-)