Psw10 Subwoofer emitting strange sound

Romeodaddy

Recently had to disconnect the sub to paint the room, was working fine. When I reestablished the subwoofer connection, the subwoofer emits a strange constant sound, sounds like ummmmmmmmmmm


Subwoofer connection to receiver (sub pre-out)
Y split cable to subwoofer
Low pass set to 180
Phase switch - have tried each position

Am I doing anything wrong? Did something happen to the subwoofer?

Thanks
Dean

MarkTX

unplug the cable going into the back of the subwoofer, is the hum gone? possible ground issues from the receiver, y-cable, etc. worse case you could float it. are you using the exact same power outlets, locations, cables, etc as before?