Proline X PO 10-S W W3 sealed wedge enclosure, front baffle with gloss black insert and pre-wired leads, 19.75 by 12.5 inches. Optimized for JL Audio W3.Proline X PO 10-S W W3 sealed wedge enclosure, side profile with recessed terminal cup, 6.95 inch top, 11.5 inch base, 12.5 inches tall. Optimized for JL Audio W3.

Performance Optimized · Datasheet

Performance Optimized Wedge Sealed 10" Enclosure | JL Audio 10W3v3 Single 10" Sealed enclosure

Net volume
0.626 Cubic Feet (JL Spec: 0.625)
Cutout
9.0625 Inches
External dimensions
19.75 Inches W × 12.5 Inches H × 6.95 Inches / 11.5 Inches D
Front baffle
Vertical Trunk-Lid-Side Woofer Mounting Face
Buy at Audio Intensity
  • Best For: JL Audio 10W3v3 Trunk-Fit Daily Driver Builds
  • Net Volume: 0.626 cu ft (JL Spec: 0.625 | 0.675 cu ft Gross)
  • Driver Match: JL Audio 10W3v3-2 (SVC 2Ω) or 10W3v3-4 (SVC 4Ω)
  • Construction: Rear-Firing Wedge | V-Groove/Dado | Threaded Inserts

Technical specifications

Enclosure TypeSealed | Wedge Geometry | Rear-Firing Trunk-Load
Driver-Specific FitmentJL Audio 10W3v3-2 (SVC 2Ω) or 10W3v3-4 (SVC 4Ω)
Internal Volume (Gross)0.675 Cubic Feet
Internal Volume (Net After Displacement)0.626 Cubic Feet (JL Spec: 0.625)
Baffle ConfigurationVertical Trunk-Lid-Side Woofer Mounting Face
MaterialLangboard Elite 3/4" MDF
Front Baffle ConstructionDouble-Layer 1.5" MDF (Two 3/4" Sheets Bonded)
JoineryV-Groove and Dado (CNC-Cut)
ConstructionShopSabre CNC / Angled Seat-Side Compound Cuts
External Width19.75 Inches
External Height12.5 Inches
External Depth (Top)6.95 Inches
External Depth (Bottom)11.5 Inches
Baffle Angle~20° From Vertical (Seat-Side Face)
Mounting Hole Diameter9.0625 Inches
Mounting Hardware8/32 Threaded Inserts | Stainless Steel Screws Included
Terminal CupProline X ABS/Carbon Fiber Composite | 12g OFC Pre-Wired
DampingPolyfill Pre-Installed
Recommended Power250-400 Watts RMS (150-500W JL Spec Range)
Target Qtc / F30.818 / 46.9 Hz (JL Published Sealed Spec)
Carpet FinishDark Gray Trunkliner (Standard) or Plush Black
Acrylic InsertBlack, Blue, Red, White, or None
Bundle OptionsBox Only | Add a JL Audio 10W3v3 Driver (2Ω or 4Ω)
Warranty1-Year Limited (Enclosure)
ManufacturedTullahoma, Tennessee, USA

Performance in this enclosure

Net airspace
0.62
cu ft per chamber
System Qtc
0.81
sealed
Half power
46.8
Hz · F3
Xmax at
400
W RMS · no filter
With 25 Hz subsonic
443
W RMS · +11%
Amplifier
150–500
W RMS recommended
This enclosure holds 0.62 cu ft net per chamber. In it the JL Audio 10W3v3-4 runs a system Qtc of 0.81 with half power at 46.8 Hz, and the cone reaches its 14.0 mm travel limit at 400 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 443 W — +43 W, or 11 percent more power for the same 14.0 mm of travel.

01Is it a sealed driver?

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

EBP = Fs ÷ Qes = 60.2
SEALED 0–50 TRANSITION 50–100 PORTED 100–150 0 50 100 150 4 60.2
4 · EBP 60.2
At 60.2 the 10W3v3-4 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

0.62 cu ft against a 32.2 L Vas.

α = Vas ÷ Vb = 1.82  ·  Fc = Fs√(α+1) = 53 Hz  ·  Qtc = 0.81
20 30 50 70 100 150 200 +6 +0 -6 -12 -18 -24 FREQUENCY · Hz LEVEL · dB −3 dB
4 · Qtc 0.81, Fc 53 Hz, F3 46.8 Hz
The box lifts resonance from 31.5 Hz free-air to 53 Hz and half power lands at 46.8 Hz, anechoic, before any cabin gain.

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 = 400 W unfiltered  →  443 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 14.0 mm 400 W reaches Xmax here
4 · 400 W, no filter4 · 443 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 400 W, reached first at 26 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 443 W before hitting the same 14.0 mm. That is 11 percent more amplifier for the price of one filter setting.
ParamValueUnitNote
Fs31.49Hzfree-air resonance
Qts0.4854
Vas32.23Lequivalent compliance
Sd345.0cm²effective piston area
Xmax14mmone-way linear travel
Pe500Wcontinuous RMS
SPL84.7dB1 W / 1 m, derived from T/S

Driver parameters as published by jlaudio.com. Curves computed against this enclosure’s actual net airspace.

Installer's take

The JL Audio 10W3v3 is the driver JL sells the most of, and there's a reason for that. It's not the flagship, it's not the halo product, but it hits the exact sweet spot where 90% of daily-driver systems live. 500 watts RMS is plenty for a well-tuned single 10 build, JL's DMA-designed motor keeps distortion low across the operating range, and the 0.625 cubic foot sealed spec means you can fit real airspace into a real trunk without giving up your weekend to a giant cabinet. It's the honest working man's SQ 10.

The W3v3 is also one of the more forgiving drivers in JL's lineup when it comes to box sizing. Where the W6v3 is picky about hitting exactly 1.0 cubic foot net, the W3v3 tolerates a wider window. You can go from about 0.5 to 0.85 cubic feet without breaking the driver's character. But there's still a sweet spot, and that sweet spot is the 0.625 cubic feet JL publishes. This cabinet delivers 0.675 cubic feet gross, and after the 10W3v3's 0.049 cubic foot displacement, you're at 0.626 cubic feet net. Essentially JL's spec exactly.

Why the wide, low wedge shape for the W3? Two reasons. First, the 10W3v3 has a shallow 5.93 inch mounting depth compared to the 6.89 inch W6v3 or the 7.52 inch 12W6v3, so we can make the cabinet shallower without giving up motor clearance. Second, the wider footprint (19.75 inches) helps distribute the load across the trunk floor for stability, and the reduced height (12.5 inches) keeps the wedge below the parcel shelf line in most sedans. This box was designed to disappear into the trunk without dominating it.

Trunk-load geometry is the same story as our other PO wedge builds. Rear seat backs lean roughly 20 degrees back from vertical, and the 6.95 inch top to 11.5 inch bottom depth difference on the seat-side face matches that lean within a couple degrees. The wedge tucks flush against the seat back. The vertical trunk-lid-side face is where the 10W3v3 mounts, firing rearward into the trunk cavity. Trunk-load loading, smoother cabin transmission, no cargo space stolen from the front of the trunk.

Power target: JL specs 150 to 500 watts RMS. Real-world sweet spot for daily driving is 250 to 400 watts. The 10W3v3 handles its rated 500 in bursts but sustained 500 pushes thermal limits, and the character of the driver at 300 to 400 watts is genuinely satisfying without straining anything. Match with a mid-tier class D monoblock, the JL RD500/1 or XD500/1 are natural in-brand pairings, but any honest 300 to 400 watt monoblock from a reputable brand will do the job.

One important note about the W3 versus the W6: the W3 is a single voice coil driver, and it's sold in TWO different impedance versions. The 10W3v3-2 is single 2-ohm. The 10W3v3-4 is single 4-ohm. You pick which one you want based on your amp's stable load. There's no wiring flexibility within one driver, a 4-ohm W3 is always 4 ohms, a 2-ohm W3 is always 2 ohms. Make sure you order the right impedance for your amplifier.

Same JL warning applies as always: do not use a passive crossover coil in series with this driver. It will screw up the low-frequency response. Use your amp's built-in low-pass filter, set somewhere between 80 and 100 Hz for musical accuracy.

If you want honest JL Audio SQ engineering in a driver you can actually afford, in a trunk-friendly wedge box that delivers exactly JL's recommended volume, this is the answer.

Questions

What size enclosure does the JL Audio 10W3v3 need?

JL Audio specifies exactly 0.625 cubic feet net internal volume as the optimum sealed enclosure for the 10W3v3, delivering F3 of 46.9 Hz and Qtc of 0.818. The Audio Intensity Performance Optimized Wedge Sealed 10 for W3 delivers 0.675 cubic feet gross internal (0.626 cubic feet net after the 10W3v3's 0.049 cubic foot driver displacement). Essentially exact match to JL Audio's published sealed specification.

What are the dimensions of the Performance Optimized Wedge Sealed 10 for the JL W3v3?

The Performance Optimized Wedge Sealed 10 for JL Audio W3v3 measures 19.75" wide x 12.5" tall externally, with a wedge-shaped depth of 6.95" at the top and 11.5" at the bottom. The angled seat-side face sits approximately 20 degrees back from vertical, designed to match the lean of typical sedan and coupe rear seat backrests.

Why choose a wedge enclosure for the JL Audio 10W3v3?

A wedge enclosure fits trunks that rectangular cabinets can't. The angled seat-side face (6.95" at top, 11.5" at bottom) matches the natural lean of most factory rear seat backrests, tucking against the seat with no wasted gap. The 10W3v3 mounts on the vertical trunk-lid-side face and fires rearward into the trunk cavity, using the trunk itself as an acoustic loading chamber, a smoother, less-localized bass presentation than direct-firing setups.

How much power can the JL Audio 10W3v3 handle?

The JL Audio 10W3v3 handles 500 watts RMS continuous, with JL recommending amplifier power in the 150 to 500 watt RMS range. For balanced output and long-term reliability in the Performance Optimized Wedge Sealed 10 enclosure, pair the 10W3v3 with a clean, well-regulated monoblock amplifier delivering 250 to 400 watts RMS at your chosen impedance. JL Audio RD or XD series 500/1 amps are natural matches.

What impedance options are available for the JL Audio 10W3v3?

The JL Audio 10W3v3 is a single voice coil driver available in two impedance versions. The 10W3v3-2 is Single 2-ohm and presents a 2-ohm load directly to your amplifier. The 10W3v3-4 is Single 4-ohm and presents a 4-ohm load. Pick the impedance version that matches your amplifier's stable-load requirements, there's no wiring flexibility within a single W3v3 driver, so order the version that fits your amp.

What is the mounting depth of the JL Audio 10W3v3?

The JL Audio 10W3v3 has a 5.93-inch mounting depth with a 9.0625-inch cutout diameter and 10.5-inch outer diameter. The Performance Optimized Wedge Sealed 10 enclosure's tapered depth profile (6.95" top to 11.5" bottom) provides ample internal clearance for the 10W3v3's motor structure and cooling requirements.

Can the JL Audio 10W3v3 be used with a passive crossover?

No. JL Audio explicitly recommends against using the 10W3v3 with a passive crossover (coil), as this type of device will adversely affect the driver's low-frequency performance. Use your amplifier's built-in active low-pass filter to set the subwoofer's upper cutoff. Typically between 80 and 100 Hz for musical accuracy.

Where is the Performance Optimized Wedge Sealed 10 for JL W3v3 manufactured?

The Performance Optimized Wedge Sealed 10 for JL Audio 10W3v3 is manufactured in Tullahoma, Tennessee, USA. Each enclosure is CNC-cut from Langboard Elite 3/4" MDF on ShopSabre routers and hand-assembled at Audio Intensity's Tennessee facility. Build time is 2 to 5 business days from order placement.

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