JL Audio 10TW1-4

10″ subwoofer · 4 Ω · 300 W RMS

Fs 38.1 HzQts 0.60Vas 0.43 ft³Xmax 0.39″
The published specs don’t add up:

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

Net volume0.57 ft³ (16 L)
Qtc0.80
Fc51 Hz
F3 (−3 dB, no cabin gain)47 Hz
Example box (outside)12 3/16″ × 12 3/16″ × 10 5/16″
Open sealed box in designer

Ported

Net volume1.48 ft³ (42 L)
Tuning (Fb)28 Hz
Port2 round ports Ø2 1/2″, 21 1/16″ long
Port velocity at 300 W117 ft/s
F3 (−3 dB, no cabin gain)24 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 8 3/16″
Open ported box in designer
2030405060801001502006066727884HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs38.1 Hz
Qts0.60
Qes0.639
Qms10.07
Vas0.43 ft³
Re3.52 Ω
Sd41.5 in²
Xmax0.39″
Vd16.4 in³ calc.
Mms146 g calc.
BL13.9 T·m calc.
EBP60 — sealed or ported calc.
Sensitivity, 1 W / 1 m82.2 dB calc.

General

Size10″
Voice coils4 Ω
RMS power300 W

Mounting dimensions

Ø10 3/8″cutout Ø9 1/16″mounting depth 4 3/8″magnet Ø4 1/2″
Cutout diameter9 1/16″
Mounting depth4 3/8″
Overall diameter10 3/8″
Magnet diameter4 1/2″

“≈” 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

Other JL Audio 10″ models