Jicafold
Active Member
So I have a JBL PB10 subwoofer. It makes a hum / buzz when plugged in without any audio connected. I've read elsewhere that this is 60hz interference. I've tried plugging this thing in everywhere in the house, extention cords, power strips, surge protectors, plugged in by itself, with other items. No change. When dismantled the sound clearly comes from the transformer. It's not so bad when its out of the box, its as if the box amplifies the buzzing. Sub works great and sounds great otherwise. Do you think it would help if I replaced the factory 2 prong plug with a 3 prong plug and soldered that extra ground in there? Thank you.