I have 2 pro amps powering my 2 lms-r 15" subs. I have a ground loop hum coming in from the source and I need to get rid of it.. In other words I do NOT hear the hum unless the source in plugged into my art cleanbox pro (see below).
I bought this at my local radio shack:
and while it works it makes lower frequencies in rew sound like wet farts. What is interesting is I tested Tron on bluray with the loop isolator in place and it didn't sound bad.. Just roomeq sounds nasty. I'm thinking if the signal is loud enough it gets past the isolator.
My current setup:
Denon 4311ci -> via RCA -> ART CLEANBoxPro -> via 2 xlr cables -> Crown xls 1500 AND EP4000.
What's funny is the CleanBoxPro doesn't clean anything.. it is simply a signal booster. If I unplug the RCA's from the CleanboxPro I do not hear the hum. Cheater plug won't work on the Denon (just for testing) as it is only a 2 prong plug. I'm looking for first hand suggestions at this point. Yes I've read a bunch of other threads/forums for suggestions.. This is in my basement so not only do I have a dimmer switch I also probably have a water heater and other things causing interference.
1) If I ran a new circuit from my breaker box would this help? Only for the amps
2) Any other options other than the crappy isolator from Radio Shack? I'm reaaaally thinking I might avoid this route.. I'm thinking even a 60+ dollar eliminator will still remove something from the source that I wouldn't want it to.
And yes I have read the other threads and while I heard thousands of "try this and try that" I don't think I've ever seen a solid outcome of "oh yeah this fixed it". I SHOULD also mention that it is NOT THE CABLE TV BOX. I've unplugged anything related to the Cable tv box (power, coax, hdmi to my receiver) and the hum is still there!!!