I have read through all the forums and still can't find an answer... I currently have these speakers and have loved them for years. Lately, I have been noticing that there is a slight, but audible "hum" and "buzz" noise coming from all the speakers including the subwoofer. I had originally thought it was a grounding issue or crossing of wires. I think I have removed such interferences as I have bought a new grounded power strip and have hooked all possible power cables into that strip. I have also checked to ensure that the speakers have been placed far away from any possible radio interference and have made sure no wires crossed any powered cables. Alas, to no avail...When I have the sub power plugged in I do not hear the "buzz" it only occurs once I turn the system on via the control hub. The noise is also audible when I plug in headphones into the control hub. Is this possibly a faulty control hub? Do you sell a replacement or are there any other options available? I love these speakers and it would be a shame to have to replace the speakers just because of a faulty control hub.

Someone can correct me if I'm wrong, but if the same issue happens when you listen through your headphones, that usually indicates a control pod issue. You can purchase a new one through Klipsch: http://www.klipsch.com/na-en/products/promedia-ultra-5-1-control-module-overview/