Chris 👾 on Nostr: npub1h29gw…4gq7w Sounds like a ground loop, probably caused by the electrical ...

npub1h29gw5utq7p5rmrs8pkk7uhfaqcgug6q7nvuwhx3gnyfjfl0ju8qu4gq7w (npub1h29…gq7w) Sounds like a ground loop, probably caused by the electrical wiring in your home or the subwoofer itself (they often have build-in amplifiers, magnets and coils and may hum even on standyby - some nearby poorly shielded cables can be enough.) You could try using a separate power outlet or a ferrit core cable. This used to be a pretty common issue before digital audio became the norm. I still keep a couple of ferrit core cables for my analog retrotech.

https://en.wikipedia.org/wiki/Ground_loop_(electricity)