"max graff" wrote in message
oups.com...
Hi guys,

I am planning on building my own valve amp and need a starting point
viz. books, forums etc. Any tips would be of good help.


I have proved to myself that I can solder well and don't have shakey
hands and did EE in my previous life.


Cheer Max.


If you want to build an amp from scratch, I recommend the Mullard Book of
Audio Circuits, which includes the 5-10 and 5-20 amplifiers together with
the 2 valve and 3 valve pre-amps. They have full circuit and constructional
plans, and you can't really go wrong.

The power amps are fine, if a little low-powered for most of today's
loudspeakers, but the pre-amps are rather noisy, and you can do better with
a modern SS design. Having said that, if you know your way round circuits,
you can delete the tone-control stage and have a passive pre-amp with active
RIAA stage. The input sensitivity of the Mullard amps is something like
70mV, so a passive controller will work fine.

If you want more power, the GEC amplifier book has high quality designs up
to 100 watts, and PA style designs up to 1 kW. They don't have full
constructional details like the Mullard book, but are fine for the
experienced constructor who can work out chassis and point-point wiring
layouts.

S.



--
http://audiopages.googlepages.com