2. speakers
  3. 1130010212

Subwoofer has a Hum

I have two Martin logan Descent subs. The one sub has a slight hum, the other one is fine. both are hooked up to my Bel Canto pre2p preamp through rca outputs.
I tried changing the pc, used a cheater plug to by pass the ground. I have all dedacated circuits for my gear. There is no hum in my main speakers which are the ML Ascenti. The sub hum is reduced when I remove the ic going to it. I tried to switch the ic's, use differant outputs on the preamp. I still have the slight hum coming from only the one sub.
Can anybody give me some advice in this matter.

Thanks
Russ
russb

Showing 1 response by snofun3

snofun3
601 posts
 
Nothing like a hummer. No, seriously, let's see if AGon will let this through (2nd try), while DK ads are rountinely permitted.
In any case, not trying to be a wise guy, but have you tried swapping the subs? If the hum moves with the sub it's the wiring, if it doesn't it's the sub.
It also sounds like there could be some kind of ground loop. Have you plugged them into the same outlet, or swapped outlets?
Get to me offline and maybe I can help. I tired of trying to compete with the DK ads for thread space.
More to discover