Thanks Spanish68, Penngray, N8DOGG, LTD02, Funky Waves, mjaudio, and Warpdrv for the great advice and explanations.
After spending $3000, one wouldn't want to feel underpowered in a large room. I am curious, how musical would the LMS 18 be for music compared with the JL Audio F113?...
I remeasured the space, I could swing a net volume of 4 cu. ft. How does such a system "sound:"
-4 cu. ft. double 3/4" MDF panels (1.5" total thickness), internal matrix bracing.
-TC Sounds LMS 5400 18in + (2) VMP 18 PR
-Behringer EP2500 (to start)
I'll have to see what kind of mass I need for the PRs.
I checked out the Funky Waves website. Very nice indeed! I'll have to weigh in the option of having a system built...
Warpdrv, a wonderful setup! 2 LMS 18" - analogous to the Shelby Cobra 427 SC of subs!
I wonder what the minimum volume is for dual opposed 18" drivers?...
This brings up another point. It would be interesting to compare the 2 types of systems for low end performance:
(1) LMS 18 + 2 VMP 18 PR
in 3.5cu.ft vs Dual LMS 18 in 6-5cu.ft