Re: RE or FI, who to pick
I would think they are both good subs. Never used a BTL, but have used the SX and the MT.
Seems like to compare (4) 15's to only (2) 15's, we will need to know how much power you will run to each setup, what your goal is (music/SPL/both), how big the enclosure can be. . . .
2000 Suburban - (4) BTL 15's and (4) IA 40.1's = 157.7 dB at 37 Hz.
1992 Astro Van - (6) BTL 15's and (6) IA 40.1's = 159.7 dB at 43 Hz.
no system right now. . .
Next system: (2) Massive Nx4 amps, (1) Massive N4 amp, (1) Audiocontrol EQL and 2XS
(12) AA Carbon Fiber 7" mids, (8) Morel MDT-12 tweeters, (1) 15" UFO BTL
REFS: iceteebone,jntar,djman37,TeamPSI,James Bang,96MaxGLE,photocrazy8,xclusiv3,DBDesignsElite, Amalan