I have re-positioned my R speakers and be able to do Center azimuth to within 0.1 degree , now my front 3 speakers are more symmetrical with L & R distance difference of @8cm . It is not near perfection (Trinnov said best within 2cm) . It is time for me to report on what MC did to my HT sound . My awkward speakers placement is certainly very challenging to MC on what it can done to re-construct my sound field . I am happy to report that my MC did it with flying color , it did brilliantly on tonal balancing my 3 different types of speakers - chosen for their small sizes , M & K = L , R , LS , RS , Aerial = Center , Back & Sub = Revel , there used to be at least 2 helicopters circling above my head , now it is one , continuity among speakers , thanks to excellent tonal balancing & phasing , is seldom heard even in some Dealer Showrooms with ideal speaker placement .
I am still running in my DB25 cables (carrying 8 channels of analogue signals) and the MC , I think , although MC is more or less a computer , it still need running in to get the best sound from it . By initial audition , I cannot hear any obvious degradation of sound by extra AD/DA , I had been an audiophile for over 35 years and certainly know what is good sound , rather I heard details I never know it was there .
Dan is right , I now get the feeling that I am more or less in the sound field (movie) - even given my much less than ideal environment , I can hardly imagine what MC could do to improve on some good and correct set HT system .
Overall , I think everyone should have an MC in their HT system , Expensive , might be , if you look at what is under the cover , but very reasonable if you know what it can do to improve your system .