On 14 Jan 2005 21:14:30 GMT, ohawker (Andy
Evans) wrote:

Andre started out with his interesting amp project.He was heckled by Stewart.
The thread looked as though it would turn into chaos.

Yup, Andre never did manage to justify any of the bull**** assumptions
he made in his design background for KISS. I didn't 'heckle' him, I
simply pointed out his factual errors, whereupon *he* started at least
four pure attack threads. Who was heckling whom?

Now where have I seen this before - jog my memory - uk.rec.audio?

Post **** - get flushed. Poor baby................

--

Stewart Pinkerton | Music is Art - Audio is Engineering

"Jim Lesurf" wrote in message
...
In article , Iain M Churches
wrote:

"Jim Lesurf" wrote in message
...
In article , Iain M Churches


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?


This amplifier is the subject of a design/building project on RAT.

Afraid I'm not sure what 'RAT' may be. Is it rec.audio.tech?

rec.audio.tubes

You can find many relevant threads, under KISS.

But can you/anyone point me at a published circuit diagram and specs so I
can see what amp "Andre's" may be, and I can then see what they/you are
referring to?

There is an URL for each stage of the development.

I am pleased that you are interested enough to access a valve group:-)

Cordially,
Iain

On Fri, 14 Jan 2005 18:05:05 +0000 (GMT), Jim Lesurf
wrote:

In article , Iain M Churches
wrote:

"Jim Lesurf" wrote in message
...
In article , Iain M Churches


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?


This amplifier is the subject of a design/building project on RAT.

Afraid I'm not sure what 'RAT' may be. Is it rec.audio.tech?

rec.audio.tubes

You can find many relevant threads, under KISS.

But can you/anyone point me at a published circuit diagram and specs so I
can see what amp "Andre's" may be, and I can then see what they/you are
referring to?

Nope, because Andre hasn't yet published his KISS design. It is
however a 2-valve SET using a 300B with a 6SN7 input/driver, and rated
at about 5 watts into 8 ohms.
--

Stewart Pinkerton | Music is Art - Audio is Engineering

In article , Iain M Churches
wrote:

"Jim Lesurf" wrote in message
...


Afraid I'm not sure what 'RAT' may be. Is it rec.audio.tech?

rec.audio.tubes

OK.


You can find many relevant threads, under KISS.

But can you/anyone point me at a published circuit diagram and specs
so I can see what amp "Andre's" may be, and I can then see what
they/you are referring to?

There is an URL for each stage of the development.

So can you (or someone else here) please post one or two that I can then
use to examine the circuit digram, etc, and nominal specs?

I am pleased that you are interested enough to access a valve group:-)

Depends what you mean. I'm simply asking to be directed towards the circuit
diagram, etc. I'm not really interested in an 'argument' or 'debate' about
this that may have occurred on RAT. My interest is in forming my own
understanding/view of the amp(s) in question without being influenced in
advance by the comments of others. Indeed, I'm afraid that I only can
devote a limited amount of time to things like reading usenet, so wih to
use my time efficiently if possible. Hence my asking for the relevant URLs
that will show the diagram(s), 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

In article , Stewart Pinkerton
wrote:
On Fri, 14 Jan 2005 18:05:05 +0000 (GMT), Jim Lesurf
wrote:



But can you/anyone point me at a published circuit diagram and specs so
I can see what amp "Andre's" may be, and I can then see what they/you
are referring to?

Nope, because Andre hasn't yet published his KISS design. It is however
a 2-valve SET using a 300B with a 6SN7 input/driver, and rated at about
5 watts into 8 ohms.

So all that is known about the *design* is that it uses a 300B and 6SN7 and
gives the output indicate above?

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

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

snip
Hence my asking for the relevant URLs
that will show the diagram(s), etc.

Slainte,

Jim


I don't know if this'll help:

http://members.lycos.co.uk/fiultra/KISS%20100.htm

Rob

Rob wrote:

I don't know if this'll help:

http://members.lycos.co.uk/fiultra/KISS%20100.htm

It will help you to fall off your chair laughing.

--
Eiron.

http://members.lycos.co.uk/fiultra/KISS%20100.htm

It will help you to fall off your chair laughing.

It's all a very inflated exercise in designing a circuit for which many
examples already exist. Andy

=== Andy Evans ===
Visit our Website:- http://www.artsandmedia.com
Audio, music and health pages and interesting links.

Andy Evans wrote:

http://members.lycos.co.uk/fiultra/KISS%20100.htm

It will help you to fall off your chair laughing.

It's all a very inflated exercise in designing a circuit for which many
examples already exist. Andy

=== Andy Evans ===
Visit our Website:- http://www.artsandmedia.com
Audio, music and health pages and interesting links.

There are indeed plenty of 300B based SET amps to be found on the web.

Most don't use loops of global NFB.

Some will use a 6SN7 to boost a 0.4v signal to 4v with one triode of the
two,
and the second triode boosts the 4 volts to 40v which is applied to the
grid of the
300B, producing 5 watts, or about 160v x 31 mA at the anode which is
applied to an OPT which transforms the power to
5.5v x 0.91amps into 6 ohms connected to the secondary.

If the speakers are horns, which Andre says should be used with such amps,
then amplifier
distortions will never be a problem because the distortion reduces with
power output.
Horns can produce 100 dB SPL at 1 watt.
There is about 3% thd at 5 watts, ( 107 dB ) but at 87 dB the power needed
is only 50 milliwatts, where thd is below 0.3%, and mostly 2H.

But I know folks with 8 watt amps based around the 300B
and they use speakers of 90 dB/w/m efficiency and they still find the
sound
better than higher powered amplifiers they have tried.

Using tubes such as the 211, 845, 805, 833, etc will allow far more power
than
a lone 300B, and hence better fidelity at higher power output levels
with less sensitive speakers.
Most folks value the SET amp for the way it somwhat inexplicably provides a
better subjective
listening experience than many other types of amplifiers.
They simply don't care about measurements, if the
wine tastes well, they drink it.
Many find that the warm midrange, say with massed violins, sounds
closer to what one hears at a concert than when using other forms of amps.

On more than one occasion I wowed a group of 30 audiophiles in a club with
these amps...
http://www.turneraudio.com.au/htmlwe...22monobloc.htm

I proved you could have power, and NFB, and low thd, and get warmth and
great music.



Patrick Turner.

In article , Eiron
wrote:
Rob wrote:

I don't know if this'll help:

http://members.lycos.co.uk/fiultra/KISS%20100.htm

It will help you to fall off your chair laughing.

Unfortunately, my initial reaction was to hope that the person who
produced the webpages knows much more about amp design than they seem to
about html and javascript sic. The pages are essentially un-navigable /
unreadable with my usual browser. Fortunately my secondary browser seems to
render/decypher them OK.

Looked at a few pages, but found no specific design circuit diagram or
layout or detailed specs of an actual design. Just lots of notes, comments,
and nominally background info.

Can't therefore really comment until such time as a specific design is
produced, is published, and can be considered.

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