[sdiy] Building a mixer

Neil Johnson neil.johnson71 at gmail.com
Sat Dec 13 15:25:38 CET 2014

Jean Bender wrote:
> I plan to build an handmade mixer mainly for experimental and noise
> purposes. I'd like to have direct outs, and some mods for larsen
> purposes.
> Would you know some good and cheap schematics for building mixers ?
> Which kind of op amps should i use ? I'd like some good general
> purposes op amps, i don't want HI FI, but if they could be sturdy
> enoughe, it would be great.
> And at least, i also really want to build some parametric equals, so
> if somebody has a good idea for that, it would be perfect !!

Go hunting for schematics and service manuals of older analogue desks.
I have schematics for Allen&Heath, DDA, Soundcraft, Mackie, various
vintage UK desks, and so on.  Google is your friend.

A lot of those mixers are based on the NE5532, NE5534 and TL072.


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