"Wally" wrote in message
...
Keith G wrote:

Oops, better clear up any confusion - that ain't my work, that's a
pic of the amp I intend to build as a 'trial triode'!!

Yup, I'd gathered that an impending project wouldn't be complete yet...


....or even started, but I don't take it for granted in this group that
'impending' will necessarily be understood when a photo exists!

;-)



I need to sort this triode thing out for myself - half the world says
they're ****e, the other half says they're the very best sound
(holographic?) you can get (SE) ...

I can't help feeling that the speakers and room would have more to do with
a
sound having a 'holographic' quality than the particular type of valve in
an
amplifier.


Yes indeed. It is the absence of a humongeous listening room that I think
makes people (Japanese in particular) seek the 'sweetness, airiness, space
and holographic' properties of a sound system on a small scale. Given a
large enough auditorium any old (valve, preferably) amp capable of pushing
out a couple of hundred watts would do.....


So far as I can see, a single-ended triode o/p would be prone to
distortion if it's used to anything like its rated power. I remember
fiddling with load and bias resistors in a pin-board ECC83 preamp I was
messing about with, and was able to dial in any amount of 2nd harmonic
distortion for a given input level.


I seek only to follow you on this fascinating voyage of discovery.....



... and I sure as hell can't/wouldn't
spend the stoopid money for an exotic 'ready-made' number..!!

Nor I. I just don't need a fancy box *that* much. I've been thinking about
home-brew front panels. Apparently, in the model steam engine scene,
people
are into making little brass nameplates for their engines.They do it by
applying a resist to the brass and then etch out the design using a
chemical - like making a PCB. The pattern on the resist is made using a
computer and printer, so the layout is as good as one's PC skills will
allow
for. After etching, the cavity is filled with paint, leaving the unetched
high spots as brass. It strikes me that that could be a good way to get
clean, accurate and long lasting legends on a front panel for an amp.


No, bugger all that - if I end up with summat even remotely like the amp in
this pic.....


http://ken-gilbert.com/techstuff/bui...n_tube_amp.htm


..... I'll be a more than happy Oryctolagus cuniculus....



Assuming I don't short myself out, I'll be posting pix and and a
description of the build (f*ck-up?) when I'm done!

Take some shots as it progresses - photo of a pile of bits, case with
holes,
some of the bits in place, etc.


Wot? Like....

http://www.apah69.dsl.pipex.com/keith_g/kit88/kit88.htm

;-)



(Explanation: There's a shop over in the town that sells gerbils with
more 'electronics knowledge' than I have.....!! :-)

If you can solder wire to tags and run it fairly neatly, you should get on
okay if there are good instructions with the kit.


No instructions, just the photos and a 'hot line' to Nick G!!

;-)


OK, here's what I'd really like (and probably what I'll imitate in the first
instance)....

http://www.mindspring.com/~mjh850830/loftin-white/


Gorgeous innit?? :-)