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A mystery for you tech gurus out there

Hi all -

I am stumped, to say the least, at what could be going on with my home theatre system. My equipment hooked up is:

-Denon 1913-AVR receiver
-Dual CS7000 (Golden one) turntable (grounded to a casing screw on the receiver case)
-Marantz 5 disc CD changer
-Front speakers: Paradigm studio 60 v1
-Center and surrounds: Sony
-Klipsch subwoofer
-Panasonic plasma TV

So the issue revolves around the front Paradigm Studio 60s. Whichever one is plugged into the FRONT LEFT speaker output on the receiver emits an occasional, loud pop. Usually the pop comes in bursts, and sounds almost like a fireworks show would with a succession of airy-sounding, concussive pops.

I thought it was my receiver (I originally had a Denon 1911-AVR giving me the same issue) and recently got the 1913, and the issue persisted. I have tried using new speaker wire as well. The part that I cant figure out is when i go behind the receiver and switch the 2 front speakers around so that the speaker that was right is now left and vice versa, the popping now comes out of the right sided speaker which is now plugged into the FRONT LEFT output.

How can this be? Any thoughts or ideas?
-
snwbrdrcol
marakanetz's avatar
marakanetz
5,473 posts
 
...and what the others see in you now?
a)
b)
c)
d) all of above
snwbrdrcol OP
2 posts
 
So ive been at work disconnecting things one by one and waiting to see if the pop continues. Started by taking out the original front speakers and replaced them with a couple of the surround speakers. Got the popping from those speakers, so that ruled out the paradigms speakers. Then i disconnected the subwoofer since that was the most recent addition to the system, and shortly afterwords I still heard popping. The most recent thing I have disconnected is the turntable, and for the last 2 days the sound has been clear.

The way I have my turntable (Dual CS 7000) set up is that I have the audio wires running to a Creative Labs turntable amplifier, which then has audio cables running to the input on the receiver. The ground wire from the turntable is directly connected to a casing screw on the receiver.

I wouldnt say that it is enough to convince me yet that the popping is gone, as it can be fairly spread out and sporadic, but so far it seems like a maybe.

Can anyone think of a reason that the turntable could be causing this issue even when it is not the source being played? While the turntable itself is not always "on" the amplifier in between the turntable/receiver always has its power light on.

Thanks again!
marakanetz's avatar
marakanetz
5,473 posts
 
Dennon AVRs have been encountering internal problems periodically. They encounter logical processor problems that comming from God knows where. Is your unit on warranty? Can you return it and exchange for similar functions Onkyo Yamaha or Nad which are much more reliable?
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