JL Audio 10W1v2-4

10″ subwoofer · 4 Ω · 300 W RMS · also as 10W1v2-8 (8 Ω)

Specs
25.2 HzFs
0.40Qts
1.78 ft³Vas
0.37″Xmax
All Thiele/Small parameters ↓
Weight & fit
4 5/16″Mounting depth
9 1/16″Cutout
300 WRMS · 4 Ω
Mounting drawing ↓
Box size
0.60 ft³ sealedoutside 12 3/16″ × 12 3/16″ × 11 1/4″ · F3 48 Hz
1.41 ft³ ported, 30 Hz31 1/2″ × 15 3/4″ × 10 1/2″ · port: slot 1 9/16 × 14 5/16″, 43 1/2″ long
Box details and plans ↓

The JL Audio 10W1v2-4 is a 10″ subwoofer. With Qts 0.40 and EBP 58 it works both sealed and ported: sealed is tighter and smaller, ported is deeper and louder. Modest excursion (Xmax 0.37″) — for clean sound at moderate levels, not for SPL competitions.

Open ported box in designerOpen sealed box in designer
Sourceweb.archive.org · manufacturer data
Checked against sourceOctober 2026
Thiele/Small parameterscomplete
Mounting dimensions3 of 4 — missing: magnet diameter; the designer will use an estimate

Recommended box

For a sedan, one sub, 300 W. It’s the same math as the designer’s step-by-step mode, where you can fit the box to your space, vehicle and amp and get plans, a cut sheet and DXF.

Sealed

smaller, tighter
0.60 ft³ (17 L)
Net volume
Bass character (Qtc)Tight and punchy · 0.81
Fc50 Hz
F3 (−3 dB, no cabin gain)48 Hz
Example box (outside)12 3/16″ × 12 3/16″ × 11 1/4″
Open sealed box in designer

Ported

deeper, louder
1.41 ft³ (40 L)
Net volume
Tuning (Fb)30 Hz
Portslot 1 9/16 × 14 5/16″, 43 1/2″ long
Port velocity at 300 W43 ft/s
F3 (−3 dB, no cabin gain)29 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 10 1/2″
Open ported box in designer

Deeper: 1.98 ft³ (56 L) tuned to 27 Hz, 31 1/2″ × 15 3/4″ × 12 3/8″ outside — a bigger box with flatter deep bass. Open in the calculator

Where to buy Amazon
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Size10″
Voice coils4 Ω
RMS power300 W
Fs25.2 Hz
Qts0.40
Qes0.432
Qms6.34
Vas1.78 ft³
Re4.09 Ω
Sd53.5 in²
Xmax0.37″
Vd20 in³ calc.
Mms133 g calc.
BL14.1 T·m calc.
EBP58 — sealed or ported calc.
Sensitivity, 1 W / 1 m84.7 dB calc.

Mounting dimensions

Ø10 1/2″cutout Ø9 1/16″mounting depth 4 5/16″magnet Ø≈ 5 7/8″
Cutout diameter9 1/16″
Mounting depth4 5/16″
Overall diameter10 1/2″

Where it fits in a vehicle

Spots from our vehicle guides where the cutout, mounting depth and recommended box fit. The spot sizes are approximate — measure your own vehicle.

“≈” means the value isn’t in the spec sheet and a typical value for the size is used; “calc.” means it’s calculated from the published parameters. Check the manufacturer’s spec sheet before you build.

Data sources

Voice coil versions

The same sub with different voice coils: the parameters are nearly the same — pick by your amp and wiring.

ModelVoice coilsReQesVasSealedPorted
JL Audio 10W1v2-44 Ω4.09 Ω0.4321.78 ft³0.60 ft³1.41 ft³ · 30 Hz
JL Audio 10W1v2-88 Ω6.67 Ω0.4721.73 ft³0.74 ft³1.38 ft³ · 30 Hz

Other JL Audio 10″ models

Similar 10″ subwoofers from other brands

Close in Fs, Qts and Vas — a box of similar volume will suit them.

All 10″ subwoofers in our database →

FAQ

What box does the JL Audio 10W1v2-4 need?

Recommended net volume: 0.60 ft³ sealed, 1.41 ft³ ported tuned to 30 Hz — for one sub in a sedan at 300 W. Fit the box to your space and amp in the free calculator, with plans and a cut sheet.

What are the JL Audio 10W1v2-4 Thiele/Small specs?

Fs 25.2 Hz, Qts 0.40, Vas 1.78 ft³, Xmax 0.37″, Sd 53.5 in².

What is the JL Audio 10W1v2-4 mounting depth?

Mounting depth is 4 5/16″, cutout diameter 9 1/16″. The inside depth of the box must exceed the mounting depth by at least 1″.

How much power does the JL Audio 10W1v2-4 handle and how do I wire it?

RMS power rating: 300 W. Wiring for several subs and amp power — in the wiring calculator.

Is the JL Audio 10W1v2-4 better sealed or ported?

EBP 58: both work — sealed 0.60 ft³ is tighter and smaller, ported 1.41 ft³ tuned to 30 Hz is deeper and louder.

What port does the JL Audio 10W1v2-4 need?

For the 1.41 ft³ ported box tuned to 30 Hz: slot 1 9/16 × 14 5/16″, 43 1/2″ long, area 22.6 in²; or a round port Ø5 3/8″, ≈ 43 1/2″ long. Port air speed at 300 W: 43 ft/s.

What box do two JL Audio 10W1v2-4 subs need?

Two subs need twice the volume: 1.20 ft³ sealed, or 2.83 ft³ ported at the same 30 Hz tuning with twice the port area. One shared chamber or one per sub — whatever fits your vehicle.