Thanks, if I'm able to figure it all out I will
I too have wanted to know this and since I cannot hear for myself and so few Pre-Pro's/AVR's have XT32 I've been looking extensively at the Integra 80.2 (Sister to Onkyo PR-SC5508 AVR).
If you check out the Official Integra DHC-80.2 Thread here (Pages 28-30 have [I believe] 3 different pretty extensive actual end user reviews comparing XT to XT32 [with Pro calibrations, too]) you'll see that XT32 has gotten EXTREMELY high marks, especially in the midbass-midrange area.
Check it out!
The .1 track is.. well it's a track created by the content makers. It has nothing to do with how many subs are in the playback system. A 5.1 movie can be played on a system that has 10 subwoofers (say, in a very large room). That most certainly does not make it 5.10. Similarly, you can play 5.1 content (including the LFE track) over a system with no sub--the LFE track is mixed into the front speakers in that case.
This is pure silliness by the AVR industry trying to create features out of something that doesn't exist. Obviously .2 sounds better than .1 on a brochure so they are going with that.
Allowing for more than one subwoofer outputs is great. Allowing them to be individually time and level delayed to get better blending is also great. This is all part of bass management that is getting more and more advanced.
Adding a number other than "1" after the "." is pure marketing and has no technical basis until the film makers decide to make content that has more than one LFE tracks.
MultiXT vs MultiXT32...
Anyone here who has recently upgraded to XT32 that has noticed improvement over just Multi or MultiXT?
Curious, I haven't really seen any comparisons/opinions...