Axiom Home Page Forums General Discussion Advice from Axiom Owners ep800 info and 2 channel amp

With subwoofers noise rejection of the cable is more important than low capacitance (which can cause high-frequency roll-off which is can be an issue with full-range interconnects, and definitely with video).

So a well shielded RCA cable is all you really need. If your receiver/pre-amp has a balanced output for the sub connection you can use a balanced cable ( http://www.axiomaudio.com/balancedcable.html ). If your receiver only has an RCA out, that's the best you're going to get; an RCA to XLR cable will be of no benefit (as this conversion is going to be performed better inside the sub's amp anyway).

But what you have now should work fine, as long as you aren't noticing hum (which may be picked up by running beside a power cable--ground loops are another matter).