Hi, all. I'm new to these forums, and I was hoping by joining up I could get a question answered.
I just bought a Sony STRDH-810, and I'm pretty happy with it. I have a 5.1 system made up of Infinity speakers for left front, right front, center, and the Left and Right surrounds. I also had an Infinity subwoofer until it got damaged and I had to replace it.
My PS3, XBOX360, and my digital set top box from my cable company are all capable of outputting 5.1 digital dolby sound, but sometimes, and it's not easy to predict when, the receiver indicates that I'm getting LPCM at 48Hz instead of dolby digital. When in this mode, the sound goes out when there is no sound to output, for instance, when I'm in the menus for my 360 and I'm not clicking over to anything. Then, once I start clicking over, there's a half-second lag and the sound comes back on and "LPCM 48" is once again indicated on the Sony receiver. I don't hear the first click-over sound, but I hear successive ones as long as I keep clicking. In this LPCM mode, this also happens in game menus, which is irritating. If I can get the receiver to "get" that the 360 is outputting dolby 5.1, this loss of sound never happens, and it's in an "always on" state, where I get no lag in picking up sound again. It also sounds much better.
All of my components have HDMI to the receiver, and there is a single HDMI cable leading to one of the three HDMI ins on my Samsung 52" plasma TV. So the receiver serves as my switchbox for these components. I'm able to finagle the receiver into going into my preferred dolby digital mode at some times by making sure the TV and receiver are on BEFORE turning on a console or cable box, but that's not always a reliable way.
I'm wondering if any of you can tell me why I would sometimes get LPCM and sometimes dolby digital. There seems to be no rhyme or reason behind it.
Thanks in advance,