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Performance Optimized · Datasheet

Performance Optimized Wedge Sealed Dual 10" Enclosure NVX NSW10v3 · Dual 10" Sealed enclosure

Net volume
0.77 cu ft per chamber after the divider and the 0.050 cu ft displacement NVX publishes per driver
Max mounting depth
5.36 in required; 1.52 in clearance above the motor against the raked rear panel
External dimensions
32.00 in W × 15 in at the seat face H × 13.03 in at the base D
Front baffle
1.5 in double baffle, outer layer machined as a flush recess
Buy at Audio IntensityFactory-direct, ships from Tullahoma
  • Best For: Dual NVX NSW10v3 Trunk-Fit Builds
  • Net Volume: 0.77 cu ft per chamber (1.68 cu ft Gross Total)
  • Driver Match: Pair of NVX NSW10v3 (NSW102v3 D2 or NSW104v3 D4), matched
  • Construction: Dual Chamber | Rear-Firing Wedge | V-Groove/Dado | Double 1.5" Baffle | 1 Shared Terminal Cup | Threaded Inserts

Spec of record

Technical specifications

SpecificationValue
SeriesProline X Performance Optimized Wedge
Compatible DriverNVX NSW10v3 (NSW102v3 D2 or NSW104v3 D4), quantity 2. Direct fit
ConfigurationDual 10 inch, two separate chambers, sealed wedge
Mounting PositionTrunk or cargo area, tall face against the rear seat back
Firing DirectionRearward into the trunk. Not a down fire design, no feet included
External Width32.00 in
External Height15 in at the seat face
External Depth13.03 in at the base, tapering to 7.57 in at the top
Internal Volume, Gross1.68 cu ft total
Internal Volume, Net Acoustic0.77 cu ft per chamber after the divider and the 0.050 cu ft displacement NVX publishes per driver
Driver Mounting Depth5.36 in required; 1.52 in clearance above the motor against the raked rear panel
Alignment, D2 per chamberQtc 0.684, fc 51.8 Hz, F3 53.7 Hz anechoic
Alignment, D4 per chamberQtc 0.729, fc 49.8 Hz, F3 48.4 Hz anechoic
Woofer Opening8.97 in, two, NVX's published cutout
Frame Outer Diameter10.40 in, NVX published
Bolt Circle9.68 in, NVX published; threaded inserts pre-installed
Driver Displacement0.050 cu ft, NVX published
NSW102v3 (D2) Fs / Qts / Qes / Qms / Vas38.67 Hz / 0.510 / 0.548 / 7.32 / 17.37 L
NSW104v3 (D4) Fs / Qts / Qes / Qms / Vas36.91 Hz / 0.540 / 0.612 / 4.59 / 17.89 L
Driver Sd340 cm2, published by NVX
Xmax12.5 mm, NVX spec; the manual does not state one-way or peak to peak
Driver Power Handling500 W RMS per driver, NVX spec
Wiring OptionsA pair of NSW102v3 (D2) drivers can land on 0.5 ohm with all four coils in parallel, 2 ohms as series pairs in parallel, or 8 ohms all in series. A pair of NSW104v3 (D4) drivers can land on 1 ohm with all four coils in parallel, 4 ohms as series pairs in parallel, or 16 ohms all in series. Anything under 1 ohm, and many amplifiers at 1 ohm, is outside what the amplifier is built for; series wiring is the safe default.
Parameter SourceNVX NSW102v3 / NSW104v3 owner's manual and nvx.com product pages
MaterialLangboard Elite MDF
ConstructionCNC cut, V-groove and dado joinery
Panel Thickness0.75 in
Front Baffle1.5 in double baffle, outer layer machined as a flush recess
Internal BracingFull-height 3/4 in divider
Driver MountingThreaded inserts pre-installed on the published bolt circle, stainless machine screws included
Terminal CupsOne Proline X ABS and carbon fiber composite, side mounted, pre wired 12 gauge OFC to both driver positions
Acrylic InsertGloss black acrylic baffle insert standard
DampingLight polyfill wall lining in both chambers, does not alter acoustic volume
CarpetPlush black
Shipping Weight52 lb
Warranty1 Year Limited
Built InTullahoma, Tennessee

Modelled response

Performance in this enclosure

Net airspace
0.77
cu ft per chamber
System Qtc
0.68–0.73
sealed
Half power
48.4–53.7
Hz · F3
Xmax at
333
W RMS · no filter
With 25 Hz subsonic
428
W RMS · +29%
Amplifier
500
W RMS recommended
This enclosure holds 0.77 cu ft net per chamber. In it the NVX NSW10v3 runs a system Qtc of 0.68–0.73 with half power at 48.4–53.7 Hz, and the cone reaches its 12.5 mm travel limit at 333 W, below the driver’s 500 W thermal rating, so travel is what stops you here, not heat. Run a subsonic filter at 25 Hz and that becomes 428 W — +95 W, or 29 percent more power for the same 12.5 mm of travel.

01Is it a sealed driver?

Efficiency bandwidth product places the motor before anything else is decided.

EBP = Fs ÷ Qes = 60.3–70.6
SEALED 0–50 TRANSITION 50–100 PORTED 100–150 0 50 100 150 dual 2 ohm 70.6 dual 4 ohm 60.3
dual 2 ohm · EBP 70.6dual 4 ohm · EBP 60.3
At 60.3–70.6 the NSW10v3 sits in the transition band, not the sealed band. That is not a mismatch: a transition motor works in either alignment, and sealed buys a smaller box and a gentler roll-off at the cost of some low-end output. Stage 02 shows what this airspace actually does with it.

02What the box does to it

0.77 cu ft against a 17.4 L Vas.

α = Vas ÷ Vb = 0.80  ·  Fc = Fs√(α+1) = 50–52 Hz  ·  Qtc = 0.68–0.73
20 30 50 70 100 150 200 +6 +0 -6 -12 -18 -24 FREQUENCY · Hz LEVEL · dB −3 dB
dual 2 ohm · Qtc 0.68, Fc 52 Hz, F3 53.7 Hzdual 4 ohm · Qtc 0.73, Fc 50 Hz, F3 48.4 Hz
The box lifts resonance from 36.9–38.7 Hz free-air to 50–52 Hz and half power lands at 48.4–53.7 Hz, anechoic, before any cabin gain. Figures are NVX’s published NSW10v3 parameters from its owner’s manual and product pages, displacement included (0.050 cubic feet). One cabinet serves both coils; both are plotted. Each chamber holds 0.77 cubic feet, so these figures are per driver.

03The watts that reach Xmax (in this enclosure)

Travel scales with the square root of power, so there is one wattage that puts the cone exactly on 12.5 mm — and a bigger one once a subsonic filter stops it wasting travel below the passband.

PXmax = 333–341 W unfiltered  →  428–431 W with a 25 Hz subsonic
20 30 50 70 100 150 200 0 4 8 12 16 FREQUENCY · Hz CONE TRAVEL · mm PAST LINEAR TRAVEL · Xmax 12.5 mm 333 W reaches Xmax here
dual 2 ohm · 333 W, no filterdual 4 ohm · 341 W, no filterdual 2 ohm · 431 W with subsonic at 25 Hz, 24 dB/octdual 4 ohm · 428 W with subsonic at 25 Hz, 24 dB/octXmax 12.5 mm one-way
Every trace touches the limit and no further, because each is drawn at the exact power that puts that coil on 12.5 mm. Unfiltered that is 333 W, reached first at 20 Hz. It sits under the 500 W the driver can take thermally, so the enclosure sets the ceiling, not the voice coil. The dashed traces are the same driver behind a subsonic filter at 25 Hz, 24 dB/oct: stopping the cone wasting travel below the passband lets it take 428 W before hitting the same 12.5 mm. That is 29 percent more amplifier for the price of one filter setting.
ParamValueUnitNote
Fs38.67 / 36.91Hzfree-air resonance
Qts0.510 / 0.540dual 2 ohm / dual 4 ohm
Vas17.37 / 17.89Lequivalent compliance
Sd339.7cm²effective piston area
Xmax12.5mmone-way linear travel
Pe500Wcontinuous RMS
SPL84.5dB1 W / 1 m, derived from T/S

Driver parameters as published by NVX NSW10v3 owner’s manual. Curves computed against this enclosure’s actual net airspace.

From the shop floor

Installer's take

0.77 cubic feet per chamber, Qtc 0.684 on the D2. One cabinet serves both coils: the NSW102v3 (D2) reads Qtc 0.684 with half power at 53.7 Hz, and the NSW104v3 (D4) reads Qtc 0.729 at 48.4 Hz.

Two chambers at 0.77 each, 32.00 wide, 15 tall, 13.03 at the base. Wire the pair identically.

Cut is 8.97, NVX's own figure, and the inserts are already pressed on their 9.68 bolt circle. It is sealed, so leave the polyfill as it is and run it at 500 watts or under.

Before you order

Questions

Does this fit the NVX NSW10v3, and will any other 10 inch fit?

The NSW10v3, yes, in either coil (NSW102v3 or NSW104v3). The baffle is cut to 8.97 in, NVX's published cutout, under the 10.40 in frame. The 5.36 inch motor clears the cabinet with 1.52 inch to spare. One cabinet serves both coils: the NSW102v3 (D2) reads Qtc 0.684 with half power at 53.7 Hz, and the NSW104v3 (D4) reads Qtc 0.729 at 48.4 Hz. Run two of the same coil so the chambers match.

Any other 10, no. The airspace is worked out from the NSW10v3's own Qts and Vas, and a different woofer that happened to drop into the hole would not see the alignment printed on this page.

Why 0.77 cubic feet per chamber, and what alignment does it target?

0.77 cubic feet is split between the coils' Butterworth volumes (0.67 for the D2, 0.88 for the D4) on the D2 figures (Fs 38.7 Hz, Qts 0.51, Vas 17.4 liters): Qtc 0.684, half power at 53.7 Hz. One cabinet serves both coils: the NSW102v3 (D2) reads Qtc 0.684 with half power at 53.7 Hz, and the NSW104v3 (D4) reads Qtc 0.729 at 48.4 Hz.

NVX's manual and product pages are the only published source for this driver, so treat the Qtc as good to a few hundredths.

What amplifier power should I run, and how should I wire it?

NVX rates the NSW10v3 at 500 watts RMS per driver, so target 350 to 500 watts RMS per driver at the final load.

A pair of NSW102v3 (D2) drivers can land on 0.5 ohm with all four coils in parallel, 2 ohms as series pairs in parallel, or 8 ohms all in series. A pair of NSW104v3 (D4) drivers can land on 1 ohm with all four coils in parallel, 4 ohms as series pairs in parallel, or 16 ohms all in series. Anything under 1 ohm, and many amplifiers at 1 ohm, is outside what the amplifier is built for; series wiring is the safe default. Confirm your amplifier's minimum stable impedance first.

Why the wedge angle, and why rear-firing into the trunk?

The seat-side face carries a 20 degree rake that matches the lean of a factory rear seat back, so the cabinet sits flush against it and the cargo space in front stays usable. The baffle is the vertical trunk-lid-side face, so the drivers fire rearward into the trunk cavity.

The trunk acts as an acoustic extension for the sealed box, and the cabin adds real output below 50 Hz, so in-vehicle response runs deeper than the anechoic 53.7 Hz on this page.

Why two separate chambers instead of one shared volume?

Two drivers sharing one sealed volume load each other: each driver's compression stroke becomes the pressure the other works against, which blurs the alignment either would have alone. A bonded full-height 3/4 inch divider gives each driver its own 0.77 cubic feet and its own polyfill.

It also means a failure in one driver does not unload the other, and the alignment on this page is the alignment in each chamber, not an average across a shared box.

What is the expected low-frequency extension?

Anechoic F3 is 53.7 Hz per chamber on the D2, with system resonance at 51.8 Hz. Below Qtc 0.707 the rolloff is gentle and F3 sits above fc, which is what a damped sealed box does.

Those figures exclude cabin gain. In a car the cabin's transfer function adds real output below 50 Hz, so in-vehicle response runs deeper than the numbers above.

Do I need to add polyfill or damping?

No. Polyfill is already installed in both chambers as a light wall lining to control internal reflections, and the quantity is chosen so it does not change the acoustic volume.

Do not add more. Packing a sealed box with fill makes it behave as though it were larger, which walks the alignment away from the 0.77 cubic feet per chamber this cabinet was built to.

Is the driver included, and are the threaded inserts installed?

No driver. This is an enclosure only. You receive the cabinet finished in plush black carpet with the gloss black acrylic baffle insert, one side-mounted pre-wired terminal cup to both positions, the polyfill lining already in place, and threaded inserts pressed on NVX's published 9.68 inch bolt circle with stainless machine screws.

The pair of NVX NSW10v3 is purchased separately, and the cabinet is cut direct fit to it, not a general purpose 10 inch box.

Same series, same size

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