Tuna Melt Volume mod

[angelodp]

I have been searching for a while now and cannot find a mod to add a volume control to the
Tuna melt pedal. Is it possible and can anyone share their work on this mod.

[pinkjimiphoton]

why do you want a volume control on a tuna melt?


i suppose the easiest thing would be to figure out where the circuit output is, break the circuit, and cobble it in. shouldn't be too hard.
but i don't know if audio actually passes thru the thing, i'd imagine it just is the input and output tied together with a buffer,  and an lfo shorting the signal to ground periodically.
i am probably wrong, tho.

[angelodp]

Thanks for the reply, I should start poking around inside and see what I can do.

I would like the volume knob so that i can adjust the level slightly higher when in trem mode and
defeat that perceive drop in volume.  I guess what I am looking for is a unity gain knob.

[ilcaccillo]

Thanks for the reply, I should start poking around inside and see what I can do.

I would like the volume knob so that i can adjust the level slightly higher when in trem mode and
defeat that perceive drop in volume.  I guess what I am looking for is a unity gain knob.

There are two resistors right next to the LDR ( small black plastic ) on the lower board, marked R102 and R120.
Replace them for resistors of an higher value something between 18K and 22K