Originally Posted by Bugs
Hmmm, all I get when I hit Display
repeatedly is Dolby D 5.1/CBL Dolby D. That's with the input set to the HR21.
Yep, my PS3 is set to HDMI/Auto.
This morning, my buzz is worse than it was last night. I can't imagine why, since I didn't change anything. Now, I can hear it from 6 feet away at a volume level of 31 and higher. With my ear on the center speaker, I can hear it down to volume level 18. This has got to stop! While I was checking out the audio output setings I did notice that the buzz went away completely when I pressed the X button to save the settings. The speakers went completely silent for just a moment.EDIT: I tried this again, but this time with a BluRay disk playing. During the silent parts of the video, I turned the volume up to max and heard no hum. I seem to only get the hum when there is no disk playing. Is this true for you, ioannisds?
I'll give this a shot and post back. I too noticed what you mentioned about the X button when I was troubleshooting. It is just bizarre, and I'm wondering if it hasn't been mentioned a ton in this thread because it might be an issue with the PS3... I hope not, because I love that damn machine. LOVE IT
. Oh, and make sure you hit display when the PS3 is on. You are getting the information for your cable box with the info you posted.
EDIT: You are right Bugs. I put in 300 just now, and the hum was gone while the disc was paused, even at maximum volume. There was some negligible (and what sounds like "normal") noise at that volume level, BUT NO HUM. I switched through the sound formats (DD, True-HD, and Linear PCM), and still no hum. What is interesting to me is that this is happening when the soundtrack is encoded in 5.1 surround, and not 7.1. I wonder if we are getting this buzzing sound because of something going on in the down-mixing of 7.1 LPCM (like when you are viewing the XMB) to a 5.1 speaker set-up? Seems weird... I still might give a better HDMI cable a try, but now I'm pretty sure it is not a ground loop issue, as ground loops don't really care if you are listening to mono or effin' 12.1. I'd be curious to find out if ALL of the people having issues with this buzzing (605 and 705 owner's included) have a 5.1 setup. I wish I had a couple of extra speakers sitting around to hook up and see what would happen with 7.1 going into 7.1 speakers.
EDIT part the 2nd: So I turned off all 7.1 surround options in the PS3's audio setup, went back into the XMB, and cranked the volume. Even with everthing set to 5.1, the buzz was still there, though at a level lower than when the Onkyo was receiving 7.1. My head hurts. I just don't know what to make of this, but it is starting to look like our PS3s have some funkiness going on. If it were a problem with the Onkyo, I don't think we'd be able to change or eliminate the hum like we have been doing. 5.1 multichannel LPCM at 48khz coming from the PS3 while in the XMB isn't any different (as far as the AVR is concerned) from the same format coming from a BD. What is nice to know here is that when watching movies, it is not a concern. But I stream a lot of video from my PC and game, and it kinda sucks to have that issue when doing either of the above. Though I will admit I don't ever do either of those at reference levels or anything. I guess time will tell if we get this solved or not.