speaker ground hum

try plugging in to different outlets
especially if there is a subwoofer

Raybo76,

Assuming the hum you are hearing from the speakers is due to a ground loop you need to start from each amp and build out to the source/s.

Start with only one amp connected to the preamp. (Unplug all other ics from the preamp's inputs as well as outputs.
Unplug all other associated equipment from the AC power outlets.) Isolate everything else from these two pieces of AC powered equipment.

If no hum...

Connect the second amp to the preamp. Check for hum.

If no hum...

Connect one front end source to the preamp. Check for hum.

Raybo76, Many times the culprit is the Cable TV cable or an outside antenna cable. Make sure you unplug all cables of these to test.

All excellent suggestions. If all else fails have
your Cable TV ground checked where it enters your house.
This eliminated a terrible hum in my family room
surround system. Good luck.

want to thank everyone who responed to my problem ,the audiogon community are great people....thanks again ..raybo76....