NVX VCW12v3 Box: Sealed 12" Wedge Enclosure Single 12" Sealed enclosure

Yes. The dual 2 ohm VCW122v3 and dual 4 ohm VCW124v3 share the same frame, so both use the same 11.25 inch cutout, the same 11.63 inch mounting diameter, and the same 7.02 inch mounting depth. The only difference is how you wire the coils at the amplifier. Displacement is identical at 0.15 cubic feet, so the 0.85 net volume holds either way.

0.85 cubic feet is the sealed volume NVX specifies for this driver, and this cabinet delivers it net after the 0.15 cubic foot displacement is subtracted, not gross before. Against the published Thiele-Small set that lands system Qtc at 0.67 with a system resonance of 41.8 Hz, which is near-Butterworth: flat through the passband with no peak at Fc. Larger boxes drop Q toward 0.6 and give up midbass authority; smaller ones push Fc up and stiffen the transient response.

Target 850 to 1200 watts RMS at your final wired impedance against the driver's 1200 watt RMS continuous rating. On the VCW124v3, parallel the coils for a 2 ohm load, which is where most monoblocks make rated power.

On the VCW122v3, parallel gives a 1 ohm load and many amplifiers are not stable there, so run those coils in series for 4 ohms unless your amp is specifically rated for 1 ohm. An unstable amp into 1 ohm clips into the coil and kills drivers.

The angled face runs 9 inches deep at the top to 14.5 inches at the bottom over 15 inches of height, a 20.1 degree rake that matches the lean of most factory rear seat backs so the box tucks flat against the seat with no dead gap. The woofer mounts on the opposite vertical face and fires rearward into the trunk cavity, which loads the trunk as part of the acoustic system. Low frequencies enter the cabin through the rear deck and seat back rather than firing straight at your back, which reads smoother and less localized from the driver's seat.

Two bonded 3/4 inch Langboard Elite MDF sheets at the mounting face. A 1200 watt RMS motor moving 23 mm one-way over 82 square inches of cone area puts real reaction force into the baffle, and a single 3/4 inch panel flexes under that load. Flex is lost output and added distortion, so every PO Series enclosure runs 1.5 inches at the driver face with 3/4 inch everywhere else.

Anechoic F3 works out to 44.4 Hz at Qtc 0.67, a near-Butterworth alignment with no peak at the 41.8 Hz system resonance. NVX publishes 42 Hz for this volume; the difference is that F3 only equals Fc at Qtc 0.707. In a car, cabin gain adds output below that corner, typically extending usable response an octave lower with the rolloff filled in. Expect solid, articulate output into the low 30s in most trunk-load sedans, with the sealed alignment giving you clean transient attack instead of a one-note hump.

No. The 0.85 cubic feet is a finished net figure and the alignment is already where it should be, so stuffing the box would effectively enlarge it acoustically and push Q lower than intended. If you want to chase resonance, put the effort into the trunk sheet metal and the rear deck instead, since that is where audible panel buzz comes from on a rear-firing install.

No, this listing is the enclosure only. You get the CNC-cut and assembled wedge in Langboard Elite MDF, carpet wrapped in your chosen finish, with the side-mounted Proline X terminal cup pre-wired in 12 gauge OFC and 8/32 threaded inserts already pressed into the baffle. Bring your own VCW122v3 or VCW124v3.