Originally Posted by Simon - PG Music
Originally Posted by Guitarhacker
Swap out that .005uf in the tone circuit. That would change the tone response. I'm not sure if larger or smaller would have the desired effect but try each and go from there.
That one will change treble response, not so much bass response. I'd increase the .005uF coupling caps before the volume controls, currently they're creating a high pass and increasing the cap will lower the frequency.
There's actually quite a strong high-pass character in the amp. It looks like around -10dB at 100Hz. As Simon moots, maybe increase the .005uF coupling caps in the first stages to perhaps 0.1uF and the two 0.1uF coupling caps to the output pair to 0.022uF. That should bring the 100Hz figure to nearer -3dB.

Doubling those all again (0.022uF and 0.047uF) would bring the 100Hz up to about -1dB, but that may be too far ... -3dB at 100Hz is probably good.


Jazz relative beginner, starting at a much older age than was helpful.
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