Proline X
Performance Optimized Down Fire Sealed Dual 10" Enclosure | Wāvtech thinPRO10
SKU: PO 10D-S DF thinPRO
- Alignment: 0.39 cu ft net per chamber, 0.78 cu ft net total, essentially Wāvtech's 0.35 preferred. Qtc 0.876 / F3 41.6 Hz (-2), Qtc 0.829 / F3 44.6 Hz (-4)
- Chambers: Two fully separate sealed chambers, 3/4" MDF full divider, one shared side-mounted terminal cup
- Drivers: Pair of Wāvtech thinPRO10-2 (2Ω) or thinPRO10-4 (4Ω) SVC, 750W RMS each / 1500W combined, 20mm Xmax, 2.875" mounting depth
- Clearance: No rear clearance required behind the motors, 9.0625" cutout at each position
- Cabinet: 30"W x 15"D x 6.25"H in down fire position, square corners, shorter than most single-driver enclosures in this line
Financing available — choose Shop Pay Installments at checkout.
Performance Optimized Down Fire Sealed Dual 10" Enclosure | Wāvtech thinPRO10
Proline X PO Down Fire Dual 10" Sealed
Cut and tuned for a pair of Wāvtech thinPRO10 subwoofers
Built Around the thinPRO10
Nothing about this cabinet is generic. Both baffle positions are bored to the thinPRO10's 9.0625 inch, 230mm cutout, and the internal height is set by its 2.875 inch mounting depth. Wāvtech publishes no rear clearance requirement behind these motors, because the magnet structure sits essentially flush with the frame rather than protruding into the airspace. That is why a two chamber cabinet for a pair of 750 watt drivers finishes at 6.25 inches tall on a 30 by 15 inch footprint, shorter than most single driver enclosures in this line.
Each driver is offered as the thinPRO10-2 (2 ohm SVC) or the thinPRO10-4 (4 ohm SVC), rated 750 watts RMS and 2250 watts peak with 20mm of one way linear excursion and 54mm of peak to peak mechanical travel. Across the pair that is 1500 watts RMS combined and 683.5 cm squared of cone area, roughly 6 dB more maximum output than a single driver.
The engineering is unusual for shallow drivers. 4.5 inch four layer high temp voice coils ride on vented polyimide composite formers. Cones are honeycomb Nomex and glass fiber composite, suspensions pair high excursion double roll NBR surrounds with dual internal mirrored NBR spiders, and the motors are FEA optimized dual gap structures with double stacked strontium magnets in vented cast aluminum frames.
Two Chambers, Not One
This enclosure follows the Proline X standing design rule for dual sealed builds. The cabinet is split into two fully separate chambers by a bonded full height 3/4 inch MDF divider, so each driver gets its own dedicated airspace.
Two drivers sharing one sealed volume interact acoustically. Each driver's compression phase becomes the other's pressure environment, which smears transient response and blurs the alignment either would have on its own. A full divider eliminates that. Both chambers are damped individually with pre-installed polyfill, and one shared side mounted terminal cup feeds both driver positions in parallel with 12 gauge OFC.
Net Volume, Not Gross
We build this cabinet at 0.39 cubic feet net per chamber, 0.78 cubic feet net total, from a 0.84 cubic foot gross cavity. Wāvtech's preferred sealed volume is 0.35 per driver, so each chamber sits within 0.04 cubic feet of their target.
True net, not marketing net. Internal volume is calculated from the machined cavity dimensions and the driver's published displacement, not estimated from external dimensions minus wall thickness.
Because the chambers are separate, the alignment is stated per driver, not per box. With the thinPRO10-2, Fs 31 Hz and Qts 0.55, each chamber lands at Qtc 0.876 with F3 at 41.6 Hz. With the thinPRO10-4, Fs 32 Hz and Qts 0.52, each chamber lands at Qtc 0.829 with F3 at 44.6 Hz. Wāvtech publishes Qtc 0.86 and 0.81 at their preferred figure, so both land within a couple of hundredths of the intended alignment. If you want to check the math against another airspace, the sealed box calculator uses the same published parameters.
Down Fire Construction
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. Every panel joint is a machined interlocking groove that mechanically locks before adhesive is applied, which keeps both chambers airtight under sustained pressure cycling. The cabinet is perimeter cross-braced. Corners are square on Down Fire cabinets.
Double Baffle, Flush Recess
Both driver positions get a 1.5 inch baffle, two bonded 3/4 inch sheets, with the outer layer machined as a flush recess so the driver bolts to the inner layer. That recovers 3/4 inch of internal clearance at each position. Two sets of 8/32 threaded inserts and stainless machine screws are included.
Side-Mounted Terminal Cup
One Proline X ABS and carbon fiber composite cup with stainless hardware and copper ring terminals, pre-wired in 12 gauge OFC to both driver positions. Side mounted so it stays accessible with the baffles facing the floor.
Separate Chambers
A 3/4 inch MDF full bonded divider splits the cabinet into two independent sealed volumes, 0.39 cubic feet net each. Neither driver sees the other's pressure.
Down Firing Into the Floor
Both drivers fire downward into the floor and the cabinet is floor coupled. The sealed rolloff meets rising cabin gain below 60 Hz, so in car response extends well below the anechoic figure. All external dimensions are stated measured in the down fire position: 30 inches wide, 15 inches deep, 6.25 inches tall.
Power and Warranty
Each thinPRO10 is rated 750 watts RMS and 2250 watts peak, 1500 watts RMS combined across the pair. Wāvtech's own recommended power range is 250 to 750 watts RMS per driver. Both variants are single voice coil, so your final load is set by which model you install; use two of the same model.
The enclosure carries a 1 year limited warranty. Bring your own pair of thinPRO10-2 or thinPRO10-4 subwoofers; the drivers are purchased separately.
Cut for the Driver, Not the Catalog
Two chambers, two drivers, one set of numbers per chamber. Cut on ShopSabre CNC routers from Langboard Elite MDF and built one at a time in Tullahoma, Tennessee.
| Series | Proline X Performance Optimized Down Fire |
| Compatible Driver | Wāvtech thinPRO10-2 (2Ω SVC) or thinPRO10-4 (4Ω SVC) | Pair Required |
| Enclosure Type | Sealed | Dual Driver | Down Fire Geometry | Floor-Coupled |
| Chamber Configuration | Two Fully Separate Chambers | Full Divider | Single Shared Side-Mounted Terminal Cup |
| Firing Direction | Down Firing, Both Drivers Fire Toward Floor |
| External Width | 30 Inches |
| External Depth | 15 Inches |
| External Height | 6.25 Inches |
| Dimension Reference | All External Dimensions Measured In Down Fire Position |
| Total Internal Gross Volume | 0.84 Cubic Feet |
| Per-Chamber Net Volume | 0.39 Cubic Feet |
| Total Net Volume | 0.78 Cubic Feet |
| Wāvtech Preferred Sealed Volume | 0.35 Cubic Feet Per Driver (This Cabinet Is Within 0.04) |
| Target Qtc Per Chamber (-2) | 0.876 (Wāvtech Publishes 0.86) |
| Target Qtc Per Chamber (-4) | 0.829 (Wāvtech Publishes 0.81) |
| Predicted F3 Per Driver (-2) | 41.6 Hz |
| Predicted F3 Per Driver (-4) | 44.6 Hz |
| Driver Fs | 31 Hz (-2) / 32 Hz (-4) |
| Driver Qts | 0.55 (-2) / 0.52 (-4) |
| Driver Vas | 17 Liters / 0.60 Cubic Feet Each |
| Driver Xmax (One-Way Linear) | 20mm / 0.79 in |
| Driver Xmech (Peak-to-Peak) | 54mm / 2.13 in |
| Cone Area | 341.76 cm² Each / 683.5 cm² Total |
| Driver Displacement | 0.028 Cubic Feet Each (Published by Wāvtech) |
| Power Handling | 750 Watts RMS Each / 1500 Watts RMS Combined |
| Recommended Power Range | 250 to 750 Watts RMS Per Driver (Wāvtech Spec) |
| Driver Voice Coil | 4.5 in / 114mm | 4-Layer High-Temp | Vented Polyimide Composite Former |
| Driver Cone | Honeycomb Nomex + Glass Fiber Composite |
| Driver Spider System | Dual Internal Mirrored NBR Spiders |
| Driver Motor | FEA-Optimized Dual-Gap, Double-Stacked Strontium Magnets |
| Mounting Depth Required | 2.875 Inches / 72.7mm (Wāvtech Spec) |
| Rear Clearance Required | None / Negligible (Wāvtech Spec) |
| Cutout Diameter (Each) | 9.0625 Inches / 230mm (Wāvtech Spec) |
| Material | Langboard Elite 3/4" MDF |
| Construction | ShopSabre CNC / Perimeter Cross-Brace |
| Panel Thickness | 3/4 Inch |
| Front Baffle Construction | Double-Layer 1.5" MDF at Both Driver Positions | Outer Layer Flush Recess |
| Chamber Divider | 3/4" MDF Full Bonded Panel |
| Joinery | V-Groove and Dado (CNC-Cut) |
| Corner Profile | Square (Down Fire Series Standard) |
| Voice Coil Configuration | Single Voice Coil Per Driver, Impedance Set By Driver Model |
| Driver Mounting | 8/32 Threaded Inserts | Stainless Steel Machine Screws Included | 2 Sets |
| Terminal Cup | One Proline X ABS/Carbon Fiber Composite | Side Mounted | 12g OFC Pre-Wired to Both Driver Positions |
| Damping | Polyfill Pre-Installed Per Chamber |
| Carpet Finish | Dark Gray Trunkliner (Standard) or Plush Black |
| Weight | 33 lb |
| Bundle Options | Enclosure Only (Bring Your Own Pair of thinPRO10-2 or thinPRO10-4) |
| Warranty | 1-Year Limited (Enclosure) |
| Built In | Tullahoma, Tennessee, USA |
01Is it a sealed driver?
Efficiency bandwidth product places the motor before anything else is decided.
02What the box does to it
0.39 cu ft against a 17.0 L Vas.
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 20.0 mm — and a bigger one once a subsonic filter stops it wasting travel below the passband.
| Param | Value | Unit | Note |
|---|---|---|---|
| Fs | 32.00 | Hz | free-air resonance |
| Qts | 0.520 / 0.550 | 4 / 2 | |
| Vas | 17.00 / 17.00 | L | equivalent compliance |
| Sd | 341.8 | cm² | effective piston area |
| Xmax | 20 | mm | one-way linear travel |
| Pe | 750 | W | continuous RMS |
| SPL | 81.6 | dB | 1 W / 1 m, derived from T/S |
Driver parameters as published by Wavtech thinPRO10 owner's manual rev2. Curves computed against this enclosure’s actual net airspace.
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.
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 |
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.
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.
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.
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.
Handcrafted in USA
Hand-assembled at our facility in Tullahoma, TN. Every enclosure is inspected before it ships.
Tuned to the Build
Internal volume and port geometry are calculated to spec and CNC-cut to exact dimensions. The box performs the same way every time.
Shop By Series
