Networked Audiomixer

Networked Audiomixer
Participants	User:buzz
Skills	Electronics
Status	Planning
Niche	Electronics
Purpose	Infra
Tool	No
Location
Cost
Tool category

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What

We've had experience with hardware like this through the Nexia_PM, but thats a very expensive device.

This project aims to make a simple 4x in 1x out (or maybe 2x out) stereo mixer that is controllable over network -only-.

How

Dreamer suggested this circuit ; https://www.cgs.synth.net/modules/cgs33_matrix_mixer_euro.html

This shows a mono 4 to 1 summing mixer, which would be adequate.

Idea will end up with 2x the input (buffer) circuit, and 4x the output (mixing) circuit

Stuff to get

• 8 digital potentiometers , possible model X9C104
• 8 'buffer' opamps , possible NE5532
• 2 output opamps , ??
• ferrite beads , ???
• connectors , ???
• some powersupply? (this circuit needs -15, 0 and +15V) , maybe this meanwell

• passives : 36x 100k ohm , 8x 1k ohm , 4x 220 ohm, 12x 100nF , 8x 47pF, 4x 10uF

• some kinda case?
• some SBC with line-in and network (and storage?) :)