Imported from GitHub: ASzc/sys-mixer · commit d08a062 · license CC-BY-SA-4.0

Description

Passive line-level audio mixer PCB

README

SYS Mixer

The SYS Mixer is a conversion board for the SYS from Schitt Audio. It turns it into a passive line-level audio mixer, rather than switching between the inputs in a binary manner.

The pushbutton switch selects which channel the variable resistor attenuates. Only one channel can be attenuated at one time, due the limitations of the SYS's default control layout.

Bill of Materials

Components required to populate the board:

Qty	Part	Description
2	Keystone 1790-3	PCB Standoff, 4.75mm lift, 4-40 thread
1	Alps SPUN194700	Pushbutton Switch, 4PDT, latching
1	Alps RK09712200MC	Potentiometer, 10 kOhms, 2 gang
3	CUI RCJ-2123	RCA Jack, two port
4	Vishay MRS25000C1002FCT00	Resistor, 10 kOhms, thin film, 600 mW