JM,
When I play the 2 channel track on DVD-A's the result via Trifield seems very similar to that of a CD- but there is greater clarity to the sound, that being the benefit of a higher res format. In general playing back discs this way compensates for bad multi channel mixes. That said- my recent DVD-A listening has been mostly Yes' Fragile and Fleetwood Mac's Rumors and I have found in this scenario, if I turn off the side channels and just use the rears as surrounds, the multi channel mix is very compelling.

David,

What is the worry about the decibels additional surrounds would add? Hearing the sound from another room or for your ears. I am sure the processor would compensate in terms of your hearing/ enjoyment.

7.1 seems to me to be a benefit for Trifield and movie playback- if your room is large enough to merit it. but for 5.1 DVD-A surround mix plaback, I have found its best to have the surround channels behind you and not to use side channels- so a 5.1 setup is best. for movies, if you have a 5.1 setup, the rule of thumb is its best to have the surround channels just behind you to the sides. So with the M gear, in a 7 speaker setup, you can tell it for DVD-A to only use the rear surround channels, and for movie or Trifield playback to use all the channels- and get the best of both worlds.

I dont agree with your concern on the M33s- in terms of time alignment, thats done in the surround processor. I think it would work out just fine.

Best regards,
Jerry
Main System: 861v6, DSP8000s in corners, DSP7000s Center and Sides, 1-9 humans.