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Proline X PO 10Q-S W NB2 sealed wedge enclosure, product photos pending. Placeholder graphic reading Photos Coming Soon.

Performance Optimized · Datasheet

Performance Optimized Wedge Wide Sealed Quad 10" Enclosure Prodigy NB2-10 · Quad 10" Sealed enclosure

Net volume
0.833 cu ft per driver, 3.33 cu ft total, after the divider and Prodigy Audio's published 0.110 cu ft displacement per driver
Max mounting depth
5.62 in required; 4.30 in clearance above the motor against the raked rear panel
External dimensions
44 in W × 17 in at the seat face H × 16.42 in at the base D
Front baffle
1.5 in double baffle, frames face mounted
Buy at Audio IntensityFactory-direct, ships from Tullahoma
Prodigy NB2-10Buy at Audio Intensity
  • Best For: Quad Prodigy NB2-10 SUV Cargo-Floor Builds
  • Net Volume: 0.833 cu ft per Driver (3.33 cu ft Net Total)
  • Driver Match: Four Prodigy NB2-10 (matched set), matched
  • Construction: 2 Chambers | 44" Wide Wedge | V-Groove/Dado | Double 1.5" Baffle | 2 Terminal Cups

Spec of record

Technical specifications

SpecificationValue
SeriesProline X Performance Optimized Wedge Wide
Compatible DriverProdigy NB2-10, quantity 4, matched. Direct fit
ConfigurationQuad 10 inch sealed wedge, 2 chambers, 2 drivers per chamber
Mounting PositionSUV cargo floor, raked face against the rear seat back
Firing DirectionRearward toward the liftgate. Not a down fire design
External Width44 in
External Height17 in at the seat face
External Depth16.42 in at the base, tapering to 10.23 in at the top
Internal Volume, Gross3.84 cu ft total
Internal Volume, Net Acoustic0.833 cu ft per driver, 3.33 cu ft total, after the divider and Prodigy Audio's published 0.110 cu ft displacement per driver
Driver Mounting Depth5.62 in required; 4.30 in clearance above the motor against the raked rear panel
Alignment Per DriverNB2-10 D4 Qtc 0.707, fc 47.2 Hz, F3 47.2 Hz anechoic
Woofer Openings4 at 9.125 in
Woofer LayoutOne row across the face
Frame Outer Diameter10.25 in
Fs / Qts / Qes34.3 Hz / 0.514 / 0.611
Vas / Sd / Xmax21.1 L / 327 cm2 / 14 mm
Driver Power Handling350 W RMS per driver, 1400 W RMS for the set of 4 (thermal rating)
Recommended Amplifier240-350 W RMS per driver, 960-1,400 W RMS for the full set
Parameter SourceProdigy Audio published specifications
MaterialLangboard Elite MDF
ConstructionCNC cut, V-groove and dado joinery
Panel Thickness0.75 in
Front Baffle1.5 in double baffle, frames face mounted
Internal BracingOne full-height 3/4 in divider
Driver MountingThreaded inserts, stainless machine screws included
Terminal CupsTwo Proline X ABS and carbon fiber composite, side mounted, one per chamber, pre wired 12 gauge OFC
Acrylic InsertGloss black acrylic baffle insert standard
DampingLight polyfill wall lining in every chamber, does not alter acoustic volume
CarpetPlush black
Shipping Weight80 lb
Warranty1 Year Limited
Built InTullahoma, Tennessee

Modelled response

Performance in this enclosure

Net airspace
0.833
cu ft per driver
System Qtc
0.71
sealed
Half power
47.2
Hz · F3
Xmax at
345
W RMS per driver · no filter
With 25 Hz subsonic
460
W RMS per driver · +33%
Amplifier, per driver
240–350
W RMS recommended
This enclosure holds 0.833 cu ft net per driver. In it the Prodigy Audio NB2-10 D4 runs a system Qtc of 0.71 with half power at 47.2 Hz, and the cone reaches its 14.0 mm travel limit at 345 W per driver, below the driver’s 350 W thermal rating, so travel is what stops you here, not heat. Run a subsonic filter at 25 Hz and that becomes 460 W per driver — +114 W, or 33 percent more power for the same 14.0 mm of travel.

00Sizing the amplifier

Every wattage on this panel is per driver. This cabinet holds four, so the amplifier feeds all four at once.

Per driver 240–350 W RMS  ×  4 drivers  =  full set 960–1,400 W RMS
Look for a mono amplifier rated 960–1,400 W RMS at the load your coil version wires to. The top is the driver’s 350 W thermal rating; with the 25 Hz subsonic set the cone still has travel to spare there, reaching Xmax only at 460 W. The top of the range needs the 25 Hz subsonic filter set; without it, keep each driver under 345 W, where the cone reaches Xmax unfiltered. Below the bottom of the range it will play, just with less headroom; above the top you are buying power the drivers cannot use.

01Is it a sealed driver?

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

EBP = Fs ÷ Qes = 56.1
SEALED 0–50 TRANSITION 50–100 PORTED 100–150 0 50 100 150 NB2-10 D4 56.1
NB2-10 D4 · EBP 56.1
At 56.1 the NB2-10 D4 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

0.833 cu ft against a 21.1 L Vas.

α = Vas ÷ Vb = 0.89  ·  Fc = Fs√(α+1) = 47 Hz  ·  Qtc = 0.71
20 30 50 70 100 150 200 +6 +0 -6 -12 -18 -24 FREQUENCY · Hz LEVEL · dB −3 dB
NB2-10 D4 · Qtc 0.71, Fc 47 Hz, F3 47.2 Hz
The box lifts resonance from 34.3 Hz free-air to 47 Hz and half power lands at 47.2 Hz, anechoic, before any cabin gain. Figures are Prodigy Audio’s published parameters. This cabinet holds four drivers in two sealed chambers of 1.667 cubic feet, two drivers to a chamber, so each driver works into 0.833 cubic feet and that is the volume plotted here.

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 14.0 mm — and a bigger one once a subsonic filter stops it wasting travel below the passband.

PXmax = 345 W per driver unfiltered  →  460 W per driver 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 14.0 mm 345 W reaches Xmax here
NB2-10 D4 · 345 W, no filterNB2-10 D4 · 460 W with subsonic at 25 Hz, 24 dB/octXmax 14.0 mm one-way
Every trace touches the limit and no further, because each is drawn at the exact power that puts that coil on 14.0 mm. Unfiltered that is 345 W per driver, reached first at 20 Hz. It sits under the 350 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 460 W per driver before hitting the same 14.0 mm. That is 33 percent more amplifier for the price of one filter setting.
ParamValueUnitNote
Fs34.30Hzfree-air resonance
Qts0.514NB2-10 D4
Vas21.05Lequivalent compliance
Sd326.6cm²effective piston area
Xmax14mmone-way linear travel
Pe350Wcontinuous RMS
SPL83.3dB1 W / 1 m, derived from T/S

Driver parameters as published by Prodigy Audio NB2-10 D4 published specifications. Curves computed against this enclosure’s actual net airspace.

From the shop floor

Installer's take

Start with the size. 0.833 cubic feet per driver puts the Prodigy NB2-10 at Qtc 0.707, resonance 47.2 Hz, half power 47.2 Hz anechoic: maximally flat, no peak, the lowest F3 a sealed box reaches without a lift. The single sealed box we build for this driver is 0.96 per driver, larger than this, so the flat box stands.

Measure the base depth, not the top. This cabinet is 16.42 in deep where it meets the floor, 10.23 at the top, 44 wide and 17 tall. In an SUV the 44 has to clear between the rear wheel wells at floor height, the base depth is measured from the seat back with the seat upright and latched, and the 17 has to clear the cargo cover.

The two terminal cups are on the side panels, one per chamber, so they sit close to the wheel wells. Land the speaker wire on both before the box slides into its final spot, with slack to pull it forward again.

Two drivers share each chamber, so they have to match: same model, same coil, wired in phase. One driver reversed in a shared chamber pushes against its partner and the pair cancels instead of adding. Check polarity at each cup with a battery tap before the box goes in. The frames mount on the face rather than in a recess.

The load depends on which coil version you run, so settle the coil before you buy the amplifier; the wiring section lists the clean loads for each version.

Power. Size the amplifier for the set, not one driver: 240 to 350 W RMS per driver is 960 to 1,400 W RMS across all 4. Set the 25 Hz subsonic to use the top of that range; without it keep each driver under 345 W.

Prodigy Audio publish no Qms for the Prodigy NB2-10, so the printed Qts could not be cross-checked.

Polyfill is in as a wall lining in every chamber. Do not add more: it makes the box act larger and walks Qtc off 0.71.

Before you order

Questions

Does this fit the Prodigy NB2-10, and its coil versions?

Yes. Each opening is cut to 9.125 in for the 10.25 in frame, and the 5.62 in deep motor clears the raked rear panel with 4.30 in to spare. Coil versions of the Prodigy NB2-10 share the frame, cutout and mounting depth, so any of them drops in. The alignment on this page is computed on the NB2-10 D4 parameters.

Run four matched drivers, same model and same coil, so every chamber sees the alignment on this page.

Why 0.833 cubic feet per driver, and what alignment does it target?

On Prodigy Audio's published Fs 34.3 Hz, Qts 0.514 and Vas 21.1 liters, 0.833 cubic feet per driver gives Qtc 0.707, system resonance 47.2 Hz and half power 47.2 Hz.

Qtc 0.707 is maximally flat: the deepest response a sealed box gives without a lift near resonance.

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

Prodigy Audio rates the Prodigy NB2-10 at 350 watts RMS per driver. Recommended amplifier: 240 to 350 W RMS per driver, 960 to 1,400 W RMS for the full set of 4. The top of that range needs the 25 Hz subsonic; without it keep each driver under 345 W.

Loads depend on the coil version you run. Dual 4 ohm drivers, coils in series: 2 ohms with each chamber's pair in parallel, 8 ohms with each pair in series. Dual 2 ohm, coils in series: 1 ohm or 4 ohms the same two ways. Single 4 ohm: 1 ohm or 4 ohms. Use the lower load only on an amplifier rated stable there.

Will it fit my SUV?

It is 44 inches wide, 17 tall and 16.42 deep at the base, tapering to 10.23 at the top. Measure between the rear wheel wells, the floor depth with the seat upright, and the height under your cargo cover.

The raked face goes against the seat back and the woofers fire toward the liftgate.

Why two drivers per chamber instead of four chambers?

Four chambers would need three dividers, and on a 44 inch face that space is needed for the woofers. Two matched drivers in one sealed chamber move together and see the same pressure, so each behaves as if it had half the chamber to itself: 0.833 cubic feet per driver here.

It also gives two terminal cups, one per pair, which keeps the wiring to the amplifier simple.

What is the expected low-frequency extension?

Anechoic F3 is 47.2 Hz per driver with system resonance at 47.2 Hz.

Those figures exclude cabin gain. An SUV cabin adds real output below about 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 as a light wall lining in every chamber, and the quantity is chosen so it does not change the acoustic volume.

Do not add more. Packing a sealed box makes it behave as though it were larger, which moves the alignment away from 0.833 cubic feet per driver.

Are the drivers included?

No. This is an enclosure only. You receive the cabinet finished in plush black carpet with the gloss black acrylic baffle insert, two side-mounted pre-wired terminal cups, the polyfill lining in place, threaded inserts and stainless machine screws.

Bring four matched Prodigy NB2-10 drivers. The cabinet is cut direct fit to them, not a general purpose 10 inch box.

Same series, same size

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