[sdiy] making a mixer

[Byron G. Jacquot]

>     could anyone offer technical details like, what should i buy from
> Digikey for a cross fader... or things to think about to keep sound
> levels their cleanist.

For faders from Digikey, look into the Panasonic ones.  They make 
some nice rail-glide ones.  You'll know they're the right ones if 
they're about $35 apiece.

They probably aren't suitable as a crossfader by themselves...but a 
pair of stereo ones mounted right next to each other, and sharing a 
single fader cap would probably make a decent crossfader.

As far as clean audio, you'll probably want low noise circuits, with 
high headroom and decent output current drive.  The ol' 5534/5532 
opamps are cheap and relatively clean.  I've recently been 
experimenting with mixers based on discrete transistor opamps, with 
power transistor output stages, running from +/- 24V supplies.

Byron Jacquot