12-13-12: Sksos1
Johnnyb you mean the JL Fathom F110. Yes the JL subs are special I went from the REL Stentors to a JL Fathom F113 and its faster, goes lower and has less distortion than the REL ever had. Plus no issues, the JL has worked flawlessly where I had reliability issues with the RELs.
Yes, I certainly meant JL, not REL. That's what happens when I post something past my bedtime.
Anyway, I can't for the life of me understand why anyone would pony up $1800 for a sub that simply adds a steep spike centered at 44 Hz, and leaves it up to the user to move this one-trick pony around the room until you find enough room reinforcement to get the thing to add meaningful bass below 40 Hz.
Again, here's the REL R-328 response curve. Its peak output centers at 44 Hz. The spike is so sharp the response is -10dB at 30Hz and 90Hz. It's -27 dB (functionally MIA) at 20 Hz.
Here's the JL Fathom F110 response curve. It peaks at 40Hz but the curve is much flatter: It's at most -2dB at 30 and 60 Hz, -6 dB at 90 Hz. It's about -12dB at 20 Hz, which with any boundary reinforcement will be usable and audible.