Glad I found this thread. I posted this as an update on the BD30 and Yamaha 3800 threads. This is with DTS-HD MA over HDMI with BD30 and Yamaha 3800:
I have been able to reproduce (somewhat) the noise issue I had with Flight of the Phoenix. It happens right at 051 min into the movie just at or after they break off the first wing by jumping on it. I found that the noise does not occur exactly the same intensity or the same place each time but within secs of that wing break. I was afraid to have the volume high during the replay. The noise is a static sound like high-voltage static electricity crackling through the speakers. Mainly in the front. It happens at a much higher volume than the set volume but depends on the set volume. That is, if the set volume was very high, it seems it could damage speakers for sure.
I'm sure they will blame the BD or the Panasonic BD30 player, more likely the BD itself. I have not heard this anywhere else in all the years of blasting my DVD movies, but now makes me cautious about playing disks in the future. It seems this new technology opens up new possibilities for glitches that are not caught before causing catastrophic damage to ears or equipment. Caution ahead.
I encourage anyone to try that section of the BD if you have it (using DTS-HD MA over HDMI), especially if you are using the new 1.6 firmware in a BD30. Maybe it's just a freak disk.