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Strange problem...static...

Posted by slapshot (A) on August 3, 2010 at 17:39:53

I'm wondering if all of you can help me a bit. Here is my equipment:

Amp: Pass Labs 250x
Preamp: Pass Labs X1
Speakers: Maggie 1.6 with external crossover, and REL Strata III sub

Problem: For a while, I've heard a low level static from the REL sub when it was turned on, but never when playing music. Tonight, for the first time, I hear this low level static from the maggies as well, and it is noticeable, and I can even hear some when playing music. I've tried a few things:

CD player and DAC off: still static
Preamp: regardless of volume level, still static; turned off, still static. Static does not increase in volume regardless of the preamp volume.
Amp off: no static through maggies, but still static through subwoofer
Subwoofer: disconnect it from amp, but leave on: still static in the suboofer
Unplug subwoofer: all static seems to disappear

So, am I correct in concluding that the subwoofer is somehow feeding back through the amp to the maggies? Any suggestions on what might be causing this?

I can send the amp within the Strata III back to Sumiko, but just curious what the rest of you think. Many thanks for your input and insight.

Edits: 08/03/10

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