Sure could use some help here...
I am getting an occasional crackling sound (kind of sounds like the tweeters are blown on my speakers) coming from my center, left, and right channel speakers. Lately (after the HD UI update) it has become more noticeable.
This typically occurs when I am watching movies or programs in HD right when the action picks up. Its even more noticeable when there is a scene with a lot of bass, like an explosion or crashing sound. It almost makes me think that the DirecTV receiver is trying to convince my speakers that they should be playing bass frequencies through the tweeters.
I have two home theater setups in my house. One with a plasma TV and a high end Marantz receiver with new Polk speakers and the other in my basement with a projector, B&W speakers and another high end Marantz receiver. Upstairs has a HR23-700 receiver, and downstairs I have a HR22-100 receiver.
This problem occurs on both setups. I have even recorded shows where I have noticed the sound to see if it is there during play back. This method makes it easy to reproduce the crackling by replaying the same section of video in either room with both setups. My only common factor, other than DirecTV, is the Marantz receivers so I bypassed my upstairs receiver and played the sound through my TV speakers and again the crackling was there at the exact same spot it was when I heard it originally.
I have also done a lot of testing on both setups using a dedicated BluRay player and a PS3. Both of those provide crystal clear audio without any distortion, crackling, or pooping.
Going even one step further I am also able to reproduce this when I play back the video I recorded using the DirecTV2PC feature. I attached a audio clip from my PC playing this back so you can hear what the crackling sounds like.
Since I am hearing this on two different receivers, and on my PC via DirecTV2PC I have to assume that my recorders are recording the audio this way so it is either a box issue, software issue, or I guess it could be my signal coming in but it seems odd that it would only manifest during HD programming.
If anyone has any suggestions it would be greatly appreciated. I have a lot of money invested in my home theaters but with the quality of the service being provided by DirecTV and there receivers I might have been better off with the $99 Theater In A Box special of the week