Q18 sealed with LT?

[Owen Bartley]

Alright, I'm still procrastinating on any kind of build, but I am also still very curious about going from a ported 15" Tempest to a larger sealed Linkwitz Transform sub. So my question is this: How will the Q18 fare in this type of application? It should have plenty of power handling and excursion to deal with the juice needed, but do any of the experts have suggestions or comments?

I don't have a specific size restriction, but I'd like to keep it no larger (smaller if possible) than my Tempest, which is about 210L (around 7.5 cu. ft.). I'd like it to play louder and lower, and I'm hoping that the sealed design will get rid of some of the boominess I have now. This will still be a mostly HT sub.

We have to stated parameters below, but I don't think I've been able to find the Le of the driver, does anyone have that?

Q18 Parameters
Fs: 24.5 Hz | 23.8 Hz
Re: 0.7 Ohms/coil | 1.4 Ohms/coil
Qms: 5.66 | 5.73
Qes: .64 | .63
Qts: .58 | .57
Mms: 322g | 342g
Cms: 0.13mm/N | 0.13mm/N
Sd: 1210cm^2 | 1210cm^2
Vas: 268 l | 268 l
Spl: 89.7dB 1W/1m | 89.4dB 1W/1m
Bl: 10.4 N/A | 15.1 N/A
Xmax: 27mm
Rms: 1000W
Sub OD: 18.500”
Cut ID: 16.750”
Mounting depth: 10.000”
Displacement: 0.24cuft