I recently purchased a XyTel 200MBps powerline networking adapter kit to get internet to my home theater components, as they do not all have WiFi and I don't have an easy way to hardwire ethernet cables from where my modem comes in to the computer. I use it primarily to stream HD video from Hulu and Amazon through my PS3. I've found that I get good connection speeds and have had no problems streaming video, but I've noticed that since plugging in the adapter, I'm getting static-y line noise through my subwoofer. The sub is plugged into the 2nd outlet in the same wall box that the networking adapter is in, and the noise seems to be directly proportional to data transfers. When watching tv, it's not noticeable since the sound just drowns it out, but if I dont have the TV or music on, i can hear it buzzing through the sub. It's just loud enough to be annoying if I'm sitting close to the sub. I do NOT get noise through the rest of my HT system, which is plugged into a different outlet in the living room.
Has anyone else encountered anything like this? Short of just moving the adapter to a different plug away from the subwoofer, is there anything I can do to eliminate this? I would assume that some sort of power line conditioner device would do the same thing, but it would be significantly cheaper to buy a longer ethernet cable and move the adapter to a different plug.