Performance Optimized Wedge Style Ported 10 inch Subwoofer Enclosure Prodigy NB2 10 - Proline X Subwoofer Enclosures for car audio systems

Proline X

Proline X Single 10" Ported System | Loaded with Prodigy NB2

Q: What is the recommended amplifier power for this loaded enclosure?

We recommend a mono-block amplifier that delivers between 400W and 500W RMS at 2 ohms. This ensures the Prodigy NB2 has enough headroom to reach its full excursion potential without clipping.

Q: Is this enclosure pre-wired?

Yes, the Prodigy NB2-10d4 comes pre-installed. For a single sub configuration, it is typically wired in parallel to a 2-ohm load at the terminal cup for easy connection to most mono amplifiers.

Q: What makes the Proline-X enclosure better than a standard store-bought box?

Proline-X enclosures are CNC-cut from high-density 3/4" MDF and use an interlocking joint design for superior rigidity. Unlike generic boxes, these feature internal bracing and a custom-tuned 33Hz port to eliminate "box talk" and resonance.

Q: Can I fit this behind the seat of a regular cab truck?

This is a wedge-style enclosure designed for trunks and SUVs. While compact, the 10" NB2 has a 5.625" mounting depth. For behind-the-seat truck applications, we recommend checking the NB3 shallow-mount series.

Q: Does this subwoofer handle low-frequency "rebassed" music well?

Absolutely. With a 33Hz tuning frequency and 14mm of linear Xmax, this system is optimized for low-end extension while maintaining mechanical control to prevent bottoming out.

Q: What are the exterior dimensions of the enclosure?

This Proline-X Performance 10" enclosure measure 23.5" W X 13" T x 8.5"/13" D. Please verify specific trunk clearance, as the wedge design allows it to sit flush against the rear seat back.

Q: What is the warranty on this setup?

Prodigy Audio drivers typically carry a 2-year warranty against manufacturing defects, and the Proline-X enclosure is built to last the life of your vehicle under normal operating conditions.

Q: Do I need a "Big 3" electrical upgrade to run this?

No. At a conservative 400W RMS, this system is designed to run efficiently on most factory electrical systems without causing significant voltage drop or requiring secondary batteries.

SKU: PO10-P W NB2 LD G

QUICK SPECS

Best For: High-output daily builds / Trunk and SUV installs
Configuration: Single 10" Ported — Wedge Style
Volume: 1.20 ft³ Net
Tuning: 33Hz
Sonic Character: Deep, High-Output, Musical

Proline X Enclosure — Built in Tennessee CNC-cut Langboard Elite 3/4" MDF, V-groove + dado joinery, recessed ABS/Carbon Fiber terminal cup.

Driver + Enclosure — Matched and Pre-Wired Subwoofer pre-installed and wired to the correct impedance. Connect your amplifier and it's ready to run.

Shipping Included No freight charges at checkout on orders to the lower 48. Alaska, Hawaii, and international orders are quoted live rates at checkout.

$ 289.99 $ 319.99 Save $ 30.00

Color

In Stock and Ready to Ship

Financing available — choose Shop Pay Installments at checkout.

What's Included

Proline X ported wedge enclosure — single 10" configuration
Prodigy Audio NB2-10D4 10" subwoofer pre-installed
Pre-wired 12g OFC speaker wire to 2-ohm
Recessed ABS/Carbon Fiber Composite terminal cup — stainless hardware, copper ring terminals

Amplifier, power wire, and RCA cables not included

Proline X Single 10" Ported System | Loaded with Prodigy NB2

Enclosure Type Ported

External Dimensions 23.5" W X 13" T x 8.5"/13" D

Net Volume 1.2cu ft

Tuning Frequency 33

Cutout Diameter 9.08

Front Panel Thickness .75

Max Mounting Depth Direct Fit"

INSTALLER'S TAKE

The NB2 in this enclosure is what a budget-to-mid system should look like. The T/S parameters actually support the 33Hz tuning — this isn't a random pairing, the enclosure volume and port spec match Prodigy's published recommendations for this driver. At 400W RMS into 2 ohms, you're not pushing the driver hard to get output. The 14mm Xmax keeps it composed at volume where a cheaper driver would be running out of travel. The wedge profile fits against the rear seat back in most vehicles cleanly. Keep your subsonic filter set at or just above 30Hz and this system will run hard daily without issues.

Product Details

Proline X Performance Optimized Series Enclosure for the Prodigy NB2-10D4

Cut and tuned for the Prodigy NB2-10D4

V-Groove and Dado Langboard Elite MDF 1.20 cu ft Net Fits Prodigy NB2-10D4

1.20cu ft net

33 Hzport tuning

Built Around the Prodigy NB2-10D4

Nothing about this box is generic. Every layer is cut to the NB2-10D4's 33 Hz ported alignment.

Net Volume, Not Gross

We build this cabinet at 1.20 cubic feet net. The volume quoted is true net internal airspace, measured after the walls, bracing and driver displacement are accounted for.

True net, not marketing net. Internal volume is calculated by summing each CNC cut layer's opening, not estimated from external dimensions minus wall thickness.

Tuned to 33 Hz

This is a vented build. Port length and area set the system response, not box volume alone. We tune this cabinet to 33 Hz in 1.20 cubic feet net. Below tuning the driver unloads, which is why the port is sized to the volume rather than dropped in to fit the panel.

Proline X Performance Optimized Series Construction

This enclosure is cut with V-groove and dado joinery on our ShopSabre routers from Langboard Elite 3/4 inch MDF, a dense 48.5 lb/ft³ board with a 200 psi internal bond and 410,000 psi MOE. The panels are V-grooved and folded on the seam, then dadoed where the internal bracing lands, so every joint is a mechanical lock rather than a glue line under load.

Pre-Wired Terminal Cup

Proline X ABS and carbon fiber composite cup with stainless hardware and copper ring terminals, pre-wired internally with 12 gauge OFC. No CCA anywhere in the build.

Finished to Match

The shell is wrapped in plush black carpet. Built one at a time in Tullahoma, Tennessee.

Enclosure Only or Loaded

Order the enclosure bare and mount your own NB2-10D4, or order it loaded and we mount the driver, dress the wiring and ship it ready to bolt in.

Cut for the Driver, Not the Catalog

Select your configuration above. This enclosure ships free to the lower 48 with a 1 year limited warranty, built one at a time in Tullahoma, Tennessee.

Enclosure Specifications

Enclosure Type	Ported — Wedge Style
Configuration	Single 10"
Net Volume	1.20 ft³
Port Type	Slot port
Port Area	11 sq in
Tuning Frequency	33 Hz
External Dimensions	23.5" W × 13" H × 8.5"/13" D
Cutout Diameter	9.08"
Max Mounting Depth	7.5"
MDF	Langboard Elite 3/4"
Joinery	V-groove + dado
Terminal Cup	Recessed ABS/Carbon Fiber Composite
Speaker Wire	12g OFC pre-installed
Finish	Dark Gray Trunkliner / Plush Black (+$10)
Vehicle Fitment	Universal

Performance Graphs

Woofer Details

The Prodigy Audio NB2-10D4 is a high-excursion daily driver built around a double-stacked magnet structure and a 2.0" 4-layer copper voice coil on a black aluminum former. With 14mm of one-way linear Xmax at 70% BL and an Fs of 34.3Hz, the NB2 is engineered specifically for ported applications where low-end extension and sustained output at real power levels matter. A center pole vent combined with radial backplate holes moves thermal energy out of the coil gap during extended high-output listening — the driver stays in control where cheaper motors compress and lose output. At 400W RMS, this is a serious daily driver at a price point that leaves room in the budget for a quality amplifier.

Brand + Model	Prodigy Audio NB2-10D4
Size	10"
RMS Power	400W
Peak Power	800W
Voice Coil	Dual 4-ohm (wired to 2-ohm)
Voice Coil Size	2.0" 4-layer copper
Xmax	14mm one-way @ 70% BL
Fs	34.3 Hz
Qts	0.514
Vas	21.05 L
Sensitivity	84.2 dB
Mounting Depth	5.625"
Cutout Diameter	9.25"

Why This Combo Works

Prodigy NB2-10D4 in a Proline X 33Hz Ported Enclosure

The NB2's published T/S parameters tell a clear story — Fs of 34.3Hz, Qts of 0.514, and an EBP of 56 place this driver in the range where a ported enclosure produces meaningfully better output than sealed without sacrificing control. Prodigy's own recommended ported spec is 1.0 ft³ tuned to 33Hz. This enclosure delivers exactly that — 1.20 ft³ net at 33Hz — which accounts for driver displacement and keeps the NB2 operating within its designed loading parameters. The 14mm Xmax gives the driver the mechanical travel to stay linear at this tuning frequency without bottoming out under sustained power.

The result is high output with genuine low-end extension — the 33Hz tuning captures bass content that most 10" systems in sealed boxes roll off entirely. The wedge profile keeps the external footprint compact enough for most sedan trunks and SUV cargo areas while the 7.5" max mounting depth accommodates the NB2's 5.625" mounting depth with clearance to spare.

For amplifier power, target 350–500W RMS at 2 ohms. The NB2 is rated at 400W RMS — staying in that range gives the driver enough headroom to perform without pushing into mechanical limits. A 500W Class D monoblock rated stable at 2 ohms is the ideal match for this system.

Materials

Material

Built From a Spec Sheet, Not a Sales Sheet

Every Proline X Performance Series enclosure is CNC-cut from Langboard Elite MDF, 3/4" (18mm) panels produced to published mill specifications. Most enclosure manufacturers source generic MDF without published data. We can tell you the internal bond rating, the modulus of elasticity, the modulus of rupture, and the face and edge screw holding strength for every panel in this enclosure, because we chose the material based on those numbers, not on price or availability.

Langboard Elite is produced in the United States. The specifications below are pulled directly from Langboard's published mill data and are verifiable. This is the same panel stock used in our full Proline X lineup.

Specifications

Langboard Elite MDF: Published Mill Data

Property	Value	Why It Matters
Panel Stock	Langboard Elite MDF	Named, verifiable panel source, not generic "high-density MDF"
Thickness	3/4" (18mm)	Industry standard for subwoofer enclosures; panels below this flex under pressure
Density	48.5 lbs/ft³	Higher density = less porosity, better screw retention, reduced resonance
Internal Bond	200 psi	Measures resistance to delamination under sustained internal pressure. The most enclosure-relevant spec on this sheet
Modulus of Rupture (MOR)	4,200 psi	Bending strength before the panel breaks, relevant for larger unsupported baffle spans
Modulus of Elasticity (MOE)	410,000 psi	Stiffness under load; higher MOE means less panel flex under bass pressure, less resonance
Face Screw Holding	325 lbs	How firmly the panel surface holds a screw; critical for baffle joint integrity over time
Edge Screw Holding	250 lbs	Panel edge retention, relevant for every joint that isn't face-to-face

Internal Bond

200 psi: The Number That Actually Matters for Enclosures

The internal bond rating measures how well the MDF panel resists delamination under sustained pressure applied perpendicular to the face. In a subwoofer enclosure, every bass transient generates a pressure pulse that pushes outward on every panel simultaneously. A panel that begins to delaminate internally loses stiffness gradually. The symptoms are slow: a box that starts to sound softer, less defined, less punchy over months of use. 200 psi internal bond is the spec that determines how long this enclosure holds its acoustic integrity under daily use at real power levels.

Stiffness

410,000 psi MOE: Less Flex, Less Resonance

The modulus of elasticity measures panel stiffness, its resistance to bending under load. A stiffer panel flexes less under the pressure generated by a high-excursion driver at volume. Panel flex is a source of acoustic coloration: the panel itself begins to radiate sound at its own resonant frequency, adding distortion to the output. 410,000 psi stiffness combined with V-groove and dado joinery means the panels stay rigid and the bracing controls resonance at the structure level, not the panel level. The bass you hear comes from the driver, not the box.

Screw Holding

325 lb Face / 250 lb Edge: Joints That Stay Locked

Screw holding strength determines how firmly the panel grips a fastener at the face and at the edge. This matters most at the baffle joint, where the front panel meets the side panels and where the driver is mounted. A panel with low screw holding strength allows fasteners to loosen over time under vibration, leading to air gaps at the joint and loss of acoustic seal. 325 lb face screw holding strength means the baffle hardware stays put. Combined with dado joinery and adhesive, the front panel on a Proline X Performance Series enclosure is not going anywhere.

Sourcing

Named Panel Stock: Not "Premium MDF"

The phrase "premium MDF" or "high-density MDF" appears on marketing copy for enclosures across every price point, from $40 to $400. It is not a specification. It is a description with no defined standard. Langboard Elite is a named, sourced, mill-documented product with published data. We name it in our copy because naming it holds us accountable to the spec. You can look up Langboard Elite independently, verify the numbers on this page, and confirm you are getting what we say you are getting. That is the point.

Why Proline X?

Most enclosures are built to a price point. Proline X is built to a spec. Every box starts with published-data MDF, gets CNC-cut to exact internal volume, and is assembled by hand in our Tennessee facility. The difference shows up in the measurements — and in how the box holds up two years into daily use.

CNC-Cut to Spec

Panels are machine-cut on ShopSabre CNC routers and joined with V-groove and dado joinery. Consistent geometry, no hand-cut variance, no gaps at the joints.