Originally Posted by myurkus
ES_Revenge - What kind of Soundcard do you have? Everything you speak of should be on that.**
No sound card really, just going through HDMI out of an HD 4830. I tried the optical S/PDIF of my on-board (ALC889) as well and it seemed to do the same thing. I will run through this again over the weekend to make sure, and be sure to turn off all the bass management (receiver and PC) to isolate the LFE to the sub...
Right now what I'm finding is:
Player: TMT3 180
Movie: Rambo 
Track played: DTS-HD MA
Output type: Bitstreamed DTS regular/core
"Original audio only"--receiver gets DTS 3/2.1 properly but the LFE channel seems low.
"Mix to DTS"--receiver also gets DTS 3/2.1 properly, but the LFE sounds much louder, similar to the AC-3 track (different language) on the same disc.
"Mix to DD"--receiver gets DD 3/2.1 and again sounds proper, inline with the native AC-3 track.
"PCM to HDMI"--Works but N/A since it seems my receiver has the 10dB LFE bug as it is, so I can't compare.
Then, same movie, same tracks played, but with PDVD 7 (can't remember the build now but one of the latest ones)...
Setting to output DTS over HDMI, it sounds like the same as using the "Mix to DTS" option in TMT3.
Again I've yet to try the disc/tracks with my standalone (BDP-S550), but I will venture to do that as well.
I'm not really too concerned with this other than to report it as a possible bug, and see if other people find the same thing. Currently I am
decoding HD tracks to PCM over HDMI, and doing a ghetto workaround of what is essentially compressing the dynamic range of the LFE channel by 10dB in the Realtek driver panel by boosting the sub to "+10dB". (This doesn't really "solve" the 10dB LFE bug but it does make it sound a lot better IMO and lets me use HDMI/lossless audio.)