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Stereo 3.5mm 12V cable caused popping sound

kevin1969

Active Member
Joined
Feb 3, 2021
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I have a Denon 4700 AVR in pre-out mode connected to an external amplifier with a high-level connection to an REL sub. When I used a stereo 3.5mm cable for the 12V trigger out to the amp it caused the subwoofer to make a popping sound when the external amp powered on and off via the 12V trigger.

Replacing the trigger cable with a mono 3.5mm fixed it.

I'm just wondering if anybody knows why a stereo 12 volt trigger cable would have caused the popping sound on the sub.

Thanks
 
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