I've had the dual opposed Dayton's in my room for the past few days so it's been a lot of fun comparing the 2 and last night I had the KC boys over, 6 of us I believe, and we tested the the subs back and forth. Sound quality to me is almost identical, I'd be hard pressed to tell the difference between the Submersive and the Dayton. Peak output is also close with an edge to the Dayton, it was neck and neck all night until the x men first class beach/shot in the back scene. For the first time I heard bad sounds from the Submersive on that scene. I didn't even know that was possible...
Then we ran the Dayton and it didn't have any bad sounds and had an obvious output advantage since it wasn't compressing like the Submersive.
We went CRAZY with the Noesis last night. My pioneer goes to +12 over reference and I went there a few times, we could have gone much louder since the individual speaker volume is set at -12 (ranges from -12 to +12) but it was already dangerous where we were.
The Noesis laughed at that volume. I don't know what the limit is on these speakers, but I'm never going to find it. There wasn't a trace of air coming out of the ports even at +12. I can't imagine running these with an amp.
For the x-men scene the master volume was 5 under reference with the subs set to 12 db hot.
I'm kind of hesitant to post the comparison since I'm selling a Submersive, but oh well.
I'm impressed with both subs. I'm impressed with the Dayton's for the obvious reason of how cheap they are, but I'm also impressed that a Submersive can go toe to toe with a sub this large and not get knocked out (well, more like knocked down) until the 12 round.