Pat, I'm trying to understand. The EP125 is a sub, what other speakers do you have? Also, is the noise coming from the TV speakers or the Axiom speakers? What receiver do you have? More information may help us to understand your problem. Also, I would assume the TV has DVI or HDMI hookups, why use RCA?

M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85