Have I wired my tone pot up wrong?

[mrahc_jftd]

Hey hey! Back again.

So I'm continuing on my building quest. At the moment I'm back trying to put together the overdrive from Brian Wampler's 'How To Design A Basic Overdrive'.

So far it's pretty much sounding like I imagine it probably should. Issue I think I'm having is that the tone control is behaving interestingly.

When the pot is turned up completely, I get a pretty crazy squeal from the circuit. I only need to roll it off a little to get rid of it tho so it's no huge biggie.

Main hiccup is that when I roll it back, from maybe halfway to nil it basically sounds like the signal is in another room. Basically it loses a tonne of volume and gets reeeeeally dark sounding. Essentially there's just a really small window in which it sounds right.

The way I have it wired is (looking at it top down)
Right lug - Coming out of capacitor C3
Centre Lug - entering capacitor C29 then to ground
Leg Lug - out into the volume pot

I wonder if I've done that wrong? Or maybe it's something earlier on? I've also included a top down pic of the breadboard incase anyone happens to spot some dumb shit I might have pulled haha!

P.s(the green wires to the left are the tone pot)

Thanks guys ❤️❤️

[antonis]

Nothing wrong with pot wiring.. 

When it's all the way up (wiper shorted to C3 positive plate), C29 is op-amp's output load..
(op-amps DO NOT like to drive capacitive loads - they frequently oscillate ..)

Try to place a series resistor, 1k say, on TL082 output..
(resistor presice value could be calculated according to 0.159/R*C29 for the higher cut-off frequency - Tone control is a simple LPF formed by C29 and pot left part resistance..)

[mrahc_jftd]

Thank you again!

This worked a charm 💪