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MIDIBox AY 3 8912 Mixer (Ver. 1a)
Notes:
Pot Options:
R4, R5, R6 = 100k (less volume)
R4, R5, R6 = 220k (more volume)
OP: LM324N (4xOP, +/-12V) - Datasheet:
This Board was etched by PCB-Mike
Download: Eagle 5.1 Files + Partlist - MIDIBox AY 3 8912 Mixer (Ver.1a)
MASTER VOLUME POT
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No OP MIXER Option
Notice:
“You can easily leave out the opamp buffer board for testing. Just connect all three outputs via 10k resistors and add a pulldown of 1k-5k from that signal to ground.” (nILS Podewski, 2008-10-02)
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[07.10.2008]