Under or Over size enclosure?

[J. Spencer]

Ok so I upgraded my Colorado to a 2019 Ram Classic Crew Cab. I had a 12w3 in a ported enclosure built to the JL specs. I'm looking at a FoxBox that goes under the back seat as it is one of the only ones I've see that is deep enough for non "slim" subwoofers. However the enclosure volume is smaller that what is recommended for the 12w3, and larger than what is recommended for the 10w3. I'm not quite sure what that will change. I've included the information I know is relivent below, as we as the link to the enclosure site. What would the difference be in performance? Would you recommend 2 10s, or 2 12s with that in mind?

Thanks in advance for your input.


Fox Box DQC-212-V
AIR VOLUME: 1.55 CUBIC FEET PER SIDE
DIVIDED: YES
PORT/VENT TUNE FREQUENCY: 35 Hz
https://www.foxacoustics.com/ProductDetails.asp?ProductCode=DQC-212-V

JL 12w3v3
Recommended Ported Enclosure Volume 1.75 cu. ft.
Recommended Ported Enclosure Tune Frequency 30Hz

JL 10w3v3
Recommended Ported Enclosure Volume 1.125cu. ft.
Recommended Ported Enclosure Tune Frequency 31.8Hz

Click to read more...

 

[Popwarhomie 5,000+ posts]

You can always shrink a box with 2x4s or another filler if needed. Can't really make it larger.

 

[Buck 5,000+ posts]

Are the ports those tiny little things in the center that look like they're firing backwards?

 

[J. Spencer]

Are the ports those tiny little things in the center that look like they're firing backwards?

If your looking at the picture of the bottom then yes.

 

[Kickstand Premium Member]

Is the piece that screws in around the bottom of the sub plastic?
I'm guessing for $300 its not fiberglass.

 

[J. Spencer]

Is the piece that screws in around the bottom of the sub plastic?
I'm guessing for $300 its not fiberglass.

Correct, molded plastic and mdf.

 

[Kickstand Premium Member]

If it was me I would stay away from anything plastic when it comes to the box.
I understand your dilemma though. I'm not a fan of the shallow mount subs either.
Why not just go to local stereo shop and have them build you a box?