Is there a way to get rid of the variable filter bruno?
I want to be sure before commiting.
Sure! I will get together a list of parts to leave out, and you'll need to put in a jumper instead of the HPF in/out relay. You'll probably have to use some kind of tray to insure mechanical stability since without the HPF pot, the board will then be attached to the front panel by only the gain pot.
Best,
Bruno2000
OK, if you don't want the HPF, leave out: C10, C203, C204, C205, C206, R3, R9, R13, R215, R220, R221, R223, R225, R226. Also leave out IC3, IC205, IC208, and their associated bypass caps, and jumper together the normally closed contact pads of RL2.
Best,
Bruno2000