Thanks for sharing all the research and experimentation you’ve been doing on this for so long. It’s especially helpful to me since I’ve been bass constrained living in an apartment and all (next week I move).
http://www.mehlau.net/audio/multisub_geddes/
Make sure that the main loudspeakers are not high pass filtered as they act as additional low frequency sources. The more the better.
So why do I get crap from some people for saying I run my M80s large because it gives me a flatter frequency response and most importantly sounds better to me? The best thing about the quote from the link you posted is it helps fill in part of an equation I was working on:
Jakewash’s amp thread + sirquack’s multiple sub thread = grunt need an A1400-8. (to drive the M80s full range)
Cheers,
Dean