h_h, Thanks for all of your work looking in to these issues. Just a quick question- The DTS production guide seems to indicate that the surround channels should have a -3dB attenuation, while the LFE from older films should have a +3dB boost, and the LFE for post 1999 films should have a +6dB boost. Are you attenuating the surrounds at all, or just applying the shelf filter described above?

Also, have you figured out why you're seeing a need for a +7 on the LFE instead of +3.

Finally, would it be possible to get a better understanding of the processing if you could record directly from a DTS-6 or DTS-6D decoder? They don't seem to be going for too much on ebay at the moment.