ncx - School me. You mention a line conditioner. I take it that is not the same thing as just a surge control device - or is it the same thing? You say that "you can also filter (coax) noise in many of those devices.", but you don't mean that a coax cable goes through (connects to) the conditioning device, do you? My sub cable is a Monster and crosses perpendicular to the coax cable, but they are some distance apart: the sub cable down along the floor over to the sub and the coax coming out of the floor and up to the separate input box for a Sharp Aquus LCD screen.

Would it be possible that my current surge box is not properly grounded? From what I can tell, you are implying that the coax grounding is probably good, but it is the shielding (and possibly the ground) for all the plug-ins that is the problem (or might lead to the solution).

Is Monster cable really good or really hype? What line conditioner do you recommend?

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Trex