I can hear distortion (here and there) when i play fat strings on my guitar through my old Small Stone J. Where shall i look? Or is it what they do? I see there is a 10uF cap between the input gain stage and the LFOs. It may lead too much bass to the LFO. Shall i exchange it or even replace it with a smaller value cap?
Or shall i lower the gain of the input stage?
Thanks.
That might do it. 10uF does seem very generous. I'll guess that 100nF might be one to try.
Don't think there is a direct connection to the LFO. It's shown close on the schematic but the input doesn't feed it.
I'v gone through the signal path and i have to confess it was my own output amp stage that distorted (to equal the TB drop).
It actually is very bassy and i think that lowering the cap 10u>100n would do good.
This one seems to work fine.
(https://i.postimg.cc/p5B1Wrb7/IMG-3005.jpg) (https://postimg.cc/p5B1Wrb7)
Here is a better design, with more stable base voltage. The 5k res is actually a 5k trimpot with the wiper connected to the output cap (Rangemaster style).
(https://i.postimg.cc/4YcCqrJh/Image1.png) (https://postimg.cc/4YcCqrJh)
Quote from: yeeshkul on February 23, 2022, 08:42:35 AM
Here is a better design...
And a much better screen-grab. Thanks for that.