6/19/12: I had some time this morning to do a DSD vs. PCM LFE HDMI bitstream comparison using my 83SE. I used the track So Far Away from the Dire Straits Brothers In Arms SACD. I did what I consider a very basic comparison leaving all my settings with Audyssey and crossovers as I would normally listen. Using my trusty Rat Shack SPL meter to level match the MV of both the DSD and the PCM settings. I found that the PCM setting was 2dB louder so for each comparison I adjusted the MV to reflect the difference. I shut of my my amp so that only the sub was playing and found that the LFE level for DSD was about 8dB lower than the PCM setting. I checked the SPL readings several times making sure everything was correct for all my comparisons. So it appears that in my system and as others have found that the LFE signal is lower when chosing the DSD setting. So from now on I will be using the PCM setting when listening to MCH SACDs.
9/14/12: I did a quick comparison between DSD and PCM with a 2CH SACD today. Using the Stereo mode using Audyssey (Flat without DynEQ) I found the level of my sub to be about 10db lower with the DSD setting. I shut off my amp and with only my sub playing using my SPL meter to measure the levels. This indicates to me that it is not just an LFE issue when using DSD. So it looks like now I'll only being using the PCM setting. Has it been determined if this is an issue with the 4311 or the Oppo players?
* I wanted to add that the above quoted posts are ones I made in the 4311 thread *
Edited by Bill Mac - 9/18/12 at 8:42am