Newby problem with hum

Smccull, you could have a cable tv ground loop problem. This can be solved by getting a pair of matching transformers($5) and put them in series with the cable tv line. Check your cable tv ground and the ground wire across your water meter. Cheater plugs will work also. Try putting in a dedicated 20amp 12 wire line in and put the cheater plug at the outlet. I am not to crazy about putting cheaters after the filter. Get an A.W. Sperry outlet tester (Home Depot $6)and test the outlet and all outlets in your house for polarity. Put your cheater plug in your dedicated outlet and test the outlet again. It should still light up correct, even though the ground is out. Why, because the ground and nuetral wire are on the same bus in the main box. If you are still getting a ground hum, call an electrician an put in an isolated ground in.

I had a ground loop/hum problem that was evident in my audio set up. Mine turned out to be the TV cable line. A simple test would be to disconnet your cable TV from the source or wall connecton and see if the problem goes away. I put a filter on the cable line and my hum has gone away.

Actually there is a preamp in this system. It is in the same case as the power amp. I wonder if the integrated amp could be modified/upgraded, or at least checked to see if it is grounded properly or well enough??

Can you upgrade the power cords on these units?

Thanks everyone for your help, especially Jsawhitlock. I checked out the psaudio site and they have a great hum wizard. As it turned out my phono pre was sitting too close to the amp. I rearranged the configuration as well as put an aluminum shielding jacket on my cables and the hum nearly went away. It's now barely audible when I have it turned up to 3 o'clock, which is passible for now. I'm going to experiment with some better shielded cables since I can't get the components any farther apart in my rack. Hopefully that'll carry me the rest of the way home.

Thanks again!

Smcull, glad to hear your hum problem is corrected, there hum wizard offers some great info!
If your looking for cables try there speaker cable as It's very good, I'm using there Statement and Plus speaker cable for my Logans, I use the Statements for the woofers and Plus for the panels and my system is sounding great. Happy Listening!