Jwong1, the best suggestion that I can offer is that the further you can keep your AC power cords from your signal and speaker cables, the happier you will be.
Cable Arrangement Suggestions
How do you arrange all your interconnects, power chords, and cables to avoid/minimize interferences? Cheap suggestions especially appreciated. I have a home theater set up with cables for AV receiver, DVD/CD, RPT, two powered Def Tech towers, extension chord (for the far left speaker and cable tv amplifier), a cable tv splitter w/cables to the VCR and tv, VCR, cassette, LD, minidisc, and will be adding a DAC shortly. I have Radio Shack RF blockers on all my power chords. Other suggestions you've found useful?