On Thu, 09 Dec 2004 22:36:11 -0800, wrote:

Hi,

I would like to build my own tube amplifier. Where can I find information
and circuit diagrams on the net?


I think Andy has answered you very well, but just consider what sort of
amplifier do you *need*? (We all know "what would be nice", but most
people run into cost limitations at some point!)

First, where do you intend to use it, and what for? The demands of an
instrumentation amp are quite a bit different to those of a hi-fi amp.

An amp intended to drive a couple of small speakers from a CD player in
your bedroom can be smaller and simpler than one for your main hi-fi in
the lounge.

Do you need headphones? Are they, perhaps, even more important than the
speakers?

Do you already have sensitive loudspeakers, or do you think you will need
to buy some more - or build a more powerful amp to drive existing
insensitive ones?

Do you need tone controls? If so, how do you want them to work?

Do you need input from a record deck, or is CD input only ok?

You really need to write down *exactly* what you need before you start
looking round. It could be that no-one has designed *exactly* what you
want yet! :-)

It will probably be worth while building a small amp just as an
experimentation platform. That way you can experiment with different
components and circuits without having to make the thing too pretty! ;-)
It also means that you can gain some experience with valve amp techniques
before plunging into your "ultimate" project...

--
Mick
(no M$ software on here... :-) )
Web: http://www.nascom.info
Web: http://projectedsound.tk