BTW - Chris, you mention a hum. As you might know, a constant hum from a powered sub woofer can be eliminated by adding one of the ground adaptors ($.25 at Radio Shack in either yellow or orange) between the power plug and the outlet.

The hum I am referring to is not a constant hum at a constant cycle. It is off and on, like Morse code with a low frequency, as mentioned above.

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Trex