NVX VCW15v3 Box: Sealed 15" Wedge Enclosure Single 15" Sealed enclosure

Yes. The dual 2 ohm VCW152v3 and the dual 4 ohm VCW154v3 share the same frame, cone and motor, so cutout, mounting depth and bolt pattern are identical between them. Both drop into the same 14.25 inch cutout and both need the same 8.19 inches of mounting depth. The only thing that changes between the two is how you wire the coils to your amplifier.

2 cubic feet is the sealed volume NVX specifies for this driver, and this cabinet is 2.0 cubic feet net, measured after driver displacement, not 2.0 gross. Gross internal volume is 2.15. That lands system Qtc at 0.76, between maximally flat and lightly punchy, with a little midbass weight and no overhang. Build the same driver in a 2.0 gross box instead and it sees 1.85 net at a Q of 0.78, which is why we quote the net figure and not the easier one.

Target 1050 to 1500 watts RMS at your final wired impedance, against the driver 1500 watt continuous rating. On the dual 2 ohm VCW152v3, wire the coils in series for 4 ohms unless your amplifier is genuinely rated 1 ohm stable, because parallel puts it at 1 ohm and plenty of amps rated for that on paper do not enjoy it in a hot trunk. The dual 4 ohm VCW154v3 is the friendlier load: series gives 8 ohms, parallel gives 2 ohms, and 2 ohms is where most monoblocks make their rated power without complaint.

The angled face runs 8.75 inches deep at the top to 15.3 inches at the bottom over 18 inches of height, a 20.0 degree rake that matches the lean of most factory rear seat backs. That face tucks against the seat, and the woofer mounts on the opposite vertical face and fires rearward into the trunk cavity. Firing into the trunk uses the cavity as an acoustic loading chamber and transmits low frequencies into the cabin through the rear deck and seat back, which presents smoother and less localized than a direct-firing box aimed at the back of your head.

Two bonded 3/4 inch Langboard Elite MDF sheets at the mounting face, 1.5 inches total. A 14.25 inch hole cut into a single 3/4 inch panel does not leave enough material to hold a 1500 watt motor still, and baffle flex shows up as smeared transients because the frame is moving opposite the cone. The doubled baffle also gives the 8/32 threaded inserts enough depth to bite properly.

Anechoic F3 works out to 46.3 Hz on the VCW152v3 and 49.4 Hz on the VCW154v3, both at Qtc 0.76. The two differ only because the coil variants have slightly different free-air resonance, 29.30 Hz against 31.30 Hz. Those are anechoic figures and they are not what you will hear. In a sealed trunk-load install cabin gain typically adds usable output an octave below the anechoic corner, so expect solid, articulate output into the low 30s in most trunk-load sedans, with the sealed alignment giving clean transient attack instead of a one-note hump.

No. The 2.0 cubic feet is a finished net figure, the alignment is already where we want it, and every Proline X sealed enclosure ships with polyfill already installed. Adding more makes the box read acoustically larger and walks Qtc below 0.76, which is the opposite of what this build is tuned for. If you want to chase resonance, put the effort into the trunk sheet metal and the rear deck, because that is where it actually lives.

No, this listing is the enclosure only. You get the CNC-cut and assembled wedge in Langboard Elite 3/4 inch MDF, carpet wrapped, with the double 1.5 inch baffle cut to 14.25 inches, 8/32 threaded inserts pressed into the baffle backside, polyfill installed, and one side-mounted Proline X terminal cup pre-wired with 12 gauge OFC. Bring your own VCW152v3 or VCW154v3.