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Original Message
RE: We went down this road about 30 years ago.
Posted by Triode_Kingdom on July 11, 2017 at 00:02:42:
Thanks, I've decided to add a set of series relay contacts. I'll drive the relay from a circuit that opens the relay at a 20-30mV DC threshold, both positive and negative. Actually, I've already got the design mostly worked out in SPICE. I don't think a separate mute relay or delay circuit will be needed if this is done.