I've always been happy (by ear) with what XT32 has done for my calibrations, especially in the subwoofers. When I went with dual subs, I used the 2 AVR pre-outs and ran 1 cable to each subwoofer. It sounded good to my ears and if I wanted to keep it simply, I was happy and felt confident.Great, if XT32 can simplify things for me then I want to give it a try. Would the setup before Audessy
be the same? Set delay at "0" for both subs and let xt32 time align everything? Set gain knobs at 12'oclock and let xt32 level match them? I saw your comment on gain matching. Is that possible since the subs are not identical? I get plenty of thump from the s3000i (right side of room) but I have found that bass on the opposite side of the room (far left) is uneven so I added the smaller s1512(biggest I could fit) on that side of the room to even things out. The smaller sub definitely works harder(more excursion) due to it being half of a s3000i. My approach was just to even out the bass in the room by adding the smaller sub and it does that but I can tell something is just not quite right.
One thing that I haven't quite learned the answer yet though, but I find interesting: so we know XT32 pings each sub separately first, to align and levels match them to the MLP...and then pings them as one virtual sub for the actual EQ. This is the correct and recommended way.
However, I think, or it doesn't appear at least, to align the subs optimally with each other (just each to the listening position and mains). Whereas in minidsp we tweak with that alignment in a vacum for the 2 subs first...and then Audyssey just sees it as 1 sub from the beginning. When I use only XT32, my subs are set to 11.8 and 11.9 distance/delay. When I go the minidsp route and do it myself, my second sub is 8ms delay compared to my first sub...to get the best overall summation with the least cancellations. And then Audyssey sets the "one" subwoofer at 15.1 distance/delay.
Anyway, that is what the biggest difference appears to be for me. But bottom line XT32 does a good job and audibly it's always sounded good to me overall. As long as you follow the best practices for both Audyssey and subwoofers from the respective guides, you'll be happy with the simple approach.