2. amps-preamps
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What is causing my speaker hum?

My speakers, Joseph Audio RM22si's, hum (unwanted noise) when the receiver is on. It was the same with my old Infinity speakers. It's there when the receiver (Denon 70Watt x 5 channel receiver) is on, but it's much louder when I'm playing a CD and then pause the CD (using a Toshiba DV333 DVD/CD player). I am using the digital out from the player into the receiver (and therefore using the D/A built into the receiver).

Is this just bad amplification? Could it possibly be bad grounding, and if so is that something I can fix? I don't think it's the CD player, because I'm using the digital out, and when that is paused there should be zero signal sent, yes?

One other very weird side note. Usually it is just white/pink style noise, but one time I heard a song playing. I'm not schizophrenic, there was actually a song playing silently in the noise, different from the one on my CD. Could that be the receiver's tuner leaking out or something coming through the power lines?

One thing I'm trying to figure out is if I buy an amplifier and plug the receiver into that, if my problems will go away, or if you guys think the problem is upstream from the amp.

Thanks,
Matt.
matt8268

Showing 1 response by haoleb

haoleb
82 posts
 
OK, if you try to do something like the guy said with the cheater plug DONT, those 3 way plus have the grounding pin for a reason, and failure to crrectly plug them in can result in fatal injury to you and/or your equipment. Lethal voltages can build up if that is cut off or bypassed and can be transfered to you!. It may be a cheap/quick fix but i have to say DONT DO IT!!!!!!!!!!!!!!!!!!!
Also if there is a dimmer switch for the lights like others said that could be it too.
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