Single sa x-18 ported box 33.35hz on music?

Hey guys,

Need a bit of help here as I searched all over and cannot find any info on this X-18 ported enclosure, size is not an issue since its going into a van.. I would like to keep it 'musical' but has some 'thump' when need be, daily driven across the midwest, weekly.. I ordered a single X-18 D2, will be running at 1ohm on my IA 20.1, roughly 1800 rms, wiring and extra power all taken cared of. I used the Torres Box Calculator and came up with some # and need to see if this is something you guys think will work or not..

First the subs specs:

X 18

Fs : 20.5 Hz

Qes : 0.57

Qms : 5.61

Qts : 0.52

Le : 5.92 mH

Sd : 1140 cm^2

Vas : 237 L

BL : 24.79 NA

Mms : 470 g

Cms : 128 uM/N

Sens : 87.22 dB 1w/1m

Wattage: 1250wRM

Torres Box #'s I came up with:

GROSS VOLUME: 6.80CF

PORT VOLUME: 1.27FT

PORT AREA PER CUBE: 15.32IN

PORT AREA: 74.00IN

NET VOLUME: 4.83FT

PHYSICAL PORT LENGTH: 22.50

TUNING: 33.35

Basically, box is going to measure 40X18X20.. with one slot port.. So, question is, do you think the box is too big for 1800 rms??. If so, what size box should I use?. Any help from you guys would be great!!. Even a link if anyone knows of one.

 
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