Okay, so it seems a few people are missing some aspects of my setup here...
Firstly, the 3000 Micros are fully crossed over at 160Hz; slope is 30dB/Oct for high- and low-pass filters, and completely time aligned via REW scan/manual delay set for the speakers. This isn’t some half-assed setup where my subs and speakers are overlapping for multiple octaves. Do it right, or don’t do it at all.
Secondly the 3000 Micros are a pair that is symmetrically placed extremely near to each sub’s matching speaker, so localization is a complete non-issue and in fact imaging is significantly superior to a single sub placed anywhere. I wish I could figure out how to post images in this forum so that you can see. I actually have a paid of IsoAcoustics ISO-155 stands arriving today to really get them even better aligned with each other. Their acoustic centers are exceptionally close to avoid problems like comb filtering and poor integration--essentially, the design is meant to mimic something like Blade 2 Metas or R5 Metas (granted, I am sticking with at 160Hz crossover since that is where my room's Schroeder frequency is, instead of crossing higher which would better simulate the aforementioned 3-way speakers).
Finally, I am acquiring the PC-2000 Pro open box at substantial discount. This one will be fully crossed over to the 3000 Micros with a 36dB/Oct slope. I am trying to decide if I want to do that at 50Hz, 55Hz, or 60Hz. I debated this model against other models for quite a while and am looking to keep to a single unit. The down-firing driver of the PC-2000 Pro combined with rear-firing port will be even better protection against potential localization compared to front-firing drivers and ports, and of course this sub will provide significantly greater extension and slam than the pair of 3000 Micros do. Relieving those little woofers of this deep bass/extreme excursion frequency range will also further improve their performance up to their upper band.
-Ed