One I -know- is not new: DIY 4435 w/ one 2234 substituted, and with required
crossover and volume/tuning changes... I've come into 4 2225 frames, but they're
not at my house yet (could be a while). Thinking that if four 2234's can embarrass
a B460 (recent post), then adding a SUB1500 would be overkill for my needs,
but it does sound entertaining :-)

The other is a DIY Everest with bottom. 8ft3 can more than house the needs for an
E145 hi-passed at 50Hz, tuned to ~60Hz as well as a sub1500 with a
linkwitz-transform EQ (perhaps a switchable 12-15Hz HP also). At 20" deep,
perhaps the SUB could be placed on the side (if these didn't go in corners)
without affecting the aesthetics much.
Guess I could cut a hole and add a partition if I ever get around to cutting wood
and actually like how they sound, midbass on up.

Why am I rambling? Mostly trolling for thoughts and experience in mixing "fast" and
"slow" bass transducers (how to integrate without losing the magic of either). I can
do computer modeling all day long (got a spice simulation of the Everest xover
tweaked up to look like the published voltage drive curves...) but it doesn't compare
to experience. Got ported SUB1500 enclosures to play nicely with L112's with a
UREI 525 to do the dividing, but 128H would seem to be a different animal than
the 2234 or E145 (light cone, big motor).

-grumpy