i have a Calrec EQ, PCB bought from Gustav. i like its sound, but i dont like the PCB / layout.
iirc it has some caps reversed, and the whole panel(s) is too big imo.
if anybody is making a new, "better" layout of this, please let me know, i may be interested in buying some PCBs.
what id like to have on the new version :
- checking all the caps directions, etc.
- adding "Out Trim" potentiometer
- 'upside down design' - compared to the current one. i dont like to have the LOW bands on the right and HIGHS on the left when EQ is racked in 1U, etc. sure i can put in the circuit "upside down" (and i did), but id prefer a mirrored design anyways..
- true bypass with relays (relays can be wired with passive switches if thats preferred)
here is my Calrec EQ, todo : painting and labeling..

PS: i was looking for Calrec EQ PCBs too not so long ago, but since i couldnt find (and didnt want to use the gerbers, or self-etch the old PCB layout) i decided to build some SSL 4k EQs. guess what, thats also "upside down", and has its own set of "oh damn"s.. i need a better layout there too. (and thicker traces, theres a lot of room for that)