Iain M Churches wrote:
"Nick Gorham" wrote in message
...

Iain M Churches wrote:



That seems to be exactly the conditions under which it is used. No-one
seems to play Jethro Tull on a 300B:-)


Takes all sorts, Tull works fine for me with a 211.

Then again, I am no a great fan of 300b's at the best of times.

--
Nick


So you are a member of what Stewart calls the "audio lunatic fringe" ? :-)
Having had the opportunity to listen to an SET amp, I must say I was
more than impressed.


Yes, I am one of those nutters :-). I must say though I agree with Stew
in part of what he says, There are a lot of crap commercial SET's out
there, that seem to sell to people who do want a effects box, and that
nice lush 300b sound, I prefer the sound of the transmitting triodes
myself. Though I also like 2a3's, The second triode in the 6em7 is not
unlike a 2a3, and I may just use a DHT for the first stage, just for the
fun of it.

45's and PX4, PX25's are nice, though hard to get hold of NOS.

I have head a PX4 SET driving a set of ELS63's and ok it was not loud,
but sounded rather nice, I suspect you would like the effect.

No I am not going to clame they don't add something to the sound, they
do, just something that I prefer, and think allows the music to be
communicated to my dull mind in a way that I find more pleasant than
when produced by SS amps.

Its certainly true that on the whole you either "get" SET's or don't. If
you do, then everything else seems lacking, and I guess the same is true
the other way :-). They also do provoke a certain "evangelical" response
from their owners :-)

Its because of this amp, that I sone have that strong a feeling about
cap sound ATM, the final cap will be replaced with a interstage
somewhere along the line, and all the bipass caps are black gates. I
will be eventually be using polyprop and paper in oil in the power supply.

If nothing else, the BG's are worth it IMHO for the much longer working
life. Pity they are stopping making them :-(

I would be interested to know a little more about your amplifier
and speaker combination. I am thinking to build/beg/steal/borrow
an SET amp for further listening in the future.

Well, this is what it was some time ago,

http://www.lurcher.org:8080/nick/audio/set/gm70ckt.gif

The GM70 is now a 211, (I will go back to GM70 for the next one :-)),
and the first stage is not the small 6em7 triode but a 6sn7.

Waiting on new transformers (The are being wound this afternoon I have
heard today), so that will let me up the B+ to 1200 and see what it can do.

Speakers are ProAc Studio 125's, 98db/w rated, but in a small room, so
almost load enough for me for most things, increasing the B+ and maybe a
bit of A2 should make it more than loud enough.

I like it anyway :-)

--
Nick