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Help I got a big time Hum in my system

I just put my HT system together. It consists of Aerial fronts Aerial rears and Aerial center and Paradigm 15 sub...power is Classe ca300 for the fronts Parasound 2203a( 3 channel) for the rears and center.The pre/pro is an Aragon
Soundstage....Cables are mostly Straightwire.
With that aside I am getting a loud hum out of all channels in all modes....it is always present even when the processor is off. It will get louder when I turn the processor up to about 60 per cent....but in lower volume settings it seems to bee constant. I do not have any power conditioners in the system at this time.....The outlets are suppose to be dedicated circuits.....When I have just the amps on and take off the interconnects to the processor it stops.....Is this a problem with the way the electrician wired my room......I need help bad Please!!!! Thanks
tmoore
j_k
234 posts
 
If you haven't figured this out yet... I noticed you said the equipment is on "circuits". This being the case, you may want to temporarily connect everything piece by piece into a single outlet (single circuit). This can be accomplished by using a cheap power strip, 6 into 2 outlet adapter, etc. Sometimes if you have 2 circuits, the grounds are tied at the breaker panel, which can create a ground circuit loop the length of 2 wiring runs to the breaker panel. If you find this is the issue, you may have to connect the grounds at the outlets to get a common ground point for your stereo.

The other excellent points above are to search on Hum, or remove any connections to cable TV for TS purposes. You may also mail me with questions, as I know HUM problems pretty well...
warnerwh
539 posts
 
You can get a ground breaker from Xantec for about 8 bucks, it's specifically designed for cables coming in from satellite or cable tv cable.
j_k
234 posts
 
Ground breakers are fine if you live in a rural area, or do not have sensitive video equipment... I used to use the ground breaker until I got a big screen.... What happens in an urban area, you will get other noise problems with a ground breaker unless the distance of cable after the ground breaker is less than the length of 1/4 wave antenna. With my setup, There was no option other than to fix the issue... Yes - 2 weekends of troubleshooting and refurbishing grounds everywhere that mattered... Now my system is dead silent on the audio & perfect on the video.
mejames
986 posts
 
hello is there a alternate way to ground the cable TV signal instead of grounding to the same point as the house Electric ground?
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