Quadracomparatorfuzz!

[patricks]

Aaaaand testing is complete! To a "mostly good enough" point, anyway.
I tested it with the "Q" resistors in place tonight (R22, 29, and 36; I didn't test it with C8 in place cos I didn't have a 4.7 nF to hand) and first off they're a fantastic option to have, definitely keeping them (you can get "%^&*ed wah" and other focussed sounds with them).
Second the presence or absence of C5 made no difference that I could hear with these switched in, and I prefer the sound when the resistor's aren't switched in with C5 in place so I'm keeping it.
I'm not going to worry about a treble cut, between dialling the various bands in and out and the gain pot there's plenty of control over treble content.

I got more oscillation in some of the bands with the "Q" resistors switched in, so I'm fairly sure the oscillation I was getting previously in the lowest band is parasitic capacitance sneaking in somewhere.
I won't bother troubleshooting it on the breadboard, but it's a reminder that I'll have to be careful with the arrangement of tracks on the PCB, keeping power a signal output traces away from input traces.

I'll try to post up some audio clips at some point in the next week or so

[ElectricDruid]

I won't bother troubleshooting it on the breadboard, but it's a reminder that I'll have to be careful with the arrangement of tracks on the PCB, keeping power a signal output traces away from input traces.

Yeah, "comparator" is a way of saying "tons of gain", so definitely worth being careful with.

[patricks]

Here's some audio I recorded tonight (apologies for the crappy phone mic sound and the sometimes sloppy playing).
The first track runs through each band, hi, hi mid, lo mid, and low
4 bands

The second has the top three bands turned up and the Q resistor for the lo mid band connected. With some oscillation chaos at the end 
3bands_lomidQ

I'm quite chuffed with how it's turned out, I'll work on a PCB bit by bit now