I'm still coming up with some other options!!
How about a Human 005 woofer. It was used as the midbass in some of the old Genisis systems. It has a 10mm xmax (not too shabby for an 8". 88 dB sensitivity. Considering that it was used in the Genisis 1 system, it's SQ would most likely be better than anything MTX makes at any price. Now I just have to come up with an alignment that would give you what you are looking for.
