I've been using an X4300h for exactly two years, and last night something went wrong with my system. I'm pretty sure it's an analog problem, but I'm not sure if it's the speaker, the AVR, or the wiring. Can anyone help me narrow it down?
When the volume is at 70% or above, the menu sound effects from my TiVo are distorted on the center speaker. The distortion is sort of a metallic twang or buzz, like sticking a piece of paper in fan blades... I'm sure an audio engineer would recognize it immediately, but that's the best I can do. Also, when I play white noise, it sounds very slightly choppy on the center speaker, like the volume is dipping for a few tenths of a second. I haven't noticed the problem on anything other source, but it's probably affecting everything.
I definitely did not have this problem twenty-four hours ago. I haven't changed anything in the meantime. In fact, I literally haven't touched any of the components. Interestingly, at the same moment that the problem started, an AC adapter died on the other side of my apartment, so there might have been some kind of power surge. The AVR is on a UPS, though, so that shouldn't have affected it.
I have two TiVos, and both are connected to the AVR through an HDMI switch. Both of the TiVos have the same problem. I've tried rebooting them. One of the TiVos is set to Dolby Digital, but the menu sounds are always PCM anyway. When I connected them to my other TVs (through the matrix switch,) they sound normal.
I have 9.1 speakers, with A+B front speakers. I've run Audyssey. The center speaker is a Polk TL3CC. My speaker wiring is really complicated, and I hope I don't have to mess with it... again, though, I literally had not touched it when the problem started. I don't know why it would suddenly fail now. I could rig up a bypass to the center speaker to test it, but that would be a pain.
Does this sound like a problem with the speaker, the AVR, the wiring, or something else? It may not seem like a big deal, but even if it only affects the TiVo menus, it's super annoying. Any suggestions?