I wrote too soon. The problem isn't solved.
It seems the interference is coming for a switching DC power supply I'm using to power all the components in the rack. I got it so I could get rid of several wallwarts. The unit provides power to an FM transmitter, Amped Wireless access point and Roku unit. It is supposed to be filtered, etc. When I unplug it, the static is completely gone.
Is there any way to clean it up?
This is the unit I got from Amazon:
http://www.amazon.com/Universal-Regu...g+power+supply
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Pioneer SX-1080, Pioneer PL-115D, Pioneer CT-F9191, Pioneer RG-1, Wollensak 8050A, Akai 4000DS MkII, Pioneer CS-05 & Polk 1.2TL
Denon 5803A, Pioneer DVL-700, Pioneer CT-W603RS, Toshiba HD-A3, D-Link DSM-520, Dish VIP-722, Polk 1.2TL, CSi5, LS/fx, RT-800 and PSW-650
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