Hmmmmm sound in subwoofer..

suresh babu Bronze Member Username: Subabu2002 Erode,, Tamil nadu,i... India Post Number: 11 Registered: Apr-04	Posted on Monday, July 26, 2004 - 07:19 GMT hi, when i using the subwoofer(yamaha) without playing cd`s. there was a sond like engine (hmmmmmmmmmmm)comes from subwoofer. do i need any service in subwoofer?? or any voltage problem. or i need to add any stablizer?? continuing with that sound leads any damage?? suresh babu.
KEGGER Silver Member Username: Kegger MICHIGAN Post Number: 942 Registered: Dec-03	Posted on Wednesday, July 28, 2004 - 15:05 GMT your probably getting ground loop hum. try a different power source. try a 2 prong plug instead of 3. see if unplugging any other equipment comletely all cables, makes a difference.