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Thanks for all of the tips! I've tried the Ground loop isolator without any luck.. My hum only lasts for about 45 seconds while the Sub warms up when it is cold.. goes away and works great after it warms up.. Still not sure what that means, but I don't think that it is a ground loop issue at...

Ok, I just turned on the system and waited until the hum started.. Unplugged the cable (coax) from the wall and the noise continued.. also continues after the power is disconnected from the cable box.. I think that the noise is independent of all but the receiver and the sub.. Since it goes a...

Cameron, My entire HT setup has only one component (TV) That has a grounded plug.. I'm not real swift when it comes to electrical problems, but is it possible to have a ground loop issue with only one grounded plug? My gut feeling is that the fact that the sub humms for the first minute...

Ok, update on the hummming.. I've been home for a few days and have had time to try a few things.. One thing that I've noticed is that the sub seems to hum when started up from cold. The hum diminishes after a a few minutes. It also goes away when I unplug the line that goes to the receiver...

Thanks much Brandon, I'll give it a shot and see what happens. Ive made so many changes I could be in for some serious troubleshooting if this isolator doesn't work.. More later, and thanks again!

First post on the forum.. I recently bought a new television (Samsung LN46 A550) and a Sony Blue ray player to use with my old surround sound system. (Kenwood HTB 503).. I've never had a lick of trouble out of the sound system, but after hooking up my new TV, adding the Blue Ray player, and...