Danny, seeing as this thread is kind of about excess...
I know that at least one of the pairs of NX-otica were built with M165X drivers in the lower section instead of the M165. What I was wondering is if there would be some advantage to running NQ's across the board, with the lower (or upper and lower) most four (or eight) NQ's crossed over as 'woofers' leaving only an MTM for the mids, like the M165 are now. You mentioned in testing the NX-Treme that running four of the NQ's for the mid drivers didn't work out well, but I'm wondering if NQ's crossed low in place of the M165 would take it up a notch?
I know that doing this wouldn't be cheap (that's a lot of NQ drivers!), and there is always a point of diminishing returns, but for someone chasing after that last 1%???
Aside, does this mean you are still padding down the MTM section when only using four M165 in the NX-otica, that there is still some efficiency left in the tank to keep up with four more woofers? Don't the M165 in the NX-Treme start playing like a line source as far as output while the MTM are still running like a point source?
(I'm also glad to see you switched to painters tape instead of duct tape this time; should make cleaning the glue residue off to prep for final finishing much easier