DS18 EXL-X12.4D

12″ subwoofer · dual 4 Ω · 1,250 W RMS

Fs 56 HzQts 0.42Vas 0.32 ft³Xmax 1.18″

Recommended box

For a sedan, one sub, 1,250 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 volume0.71 ft³ (20 L)
Qtc0.51
Fc68 Hz
F3 (−3 dB, no cabin gain)105 Hz
Example box (outside)14 3/16″ × 14 3/16″ × 10 1/16″
Open sealed box in designer

Ported

Net volume1.45 ft³ (41 L)
Tuning (Fb)35 Hz
Portslot 2 3/16 × 14 5/16″, 42 3/16″ long
Port velocity at 1,250 W82 ft/s
F3 (−3 dB, no cabin gain)77 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 11 1/2″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs56 Hz
Qts0.42
Qes0.482
Qms3.31
Vas0.32 ft³
Re (one coil)3.7 Ω
Sd76.1 in²
Xmax1.18″
Vd89.9 in³ calc.
Mms303 g calc.
BL28.6 T·m calc.
EBP116 — suits ported calc.
Sensitivity, 1 W / 1 m87.2 dB calc.

General

Size12″
Voice coilsdual 4 Ω
RMS power1,250 W

Mounting dimensions

Ø12 5/8″cutout Ø11 1/8″mounting depth 7 1/16″magnet Ø≈ 7 3/16″
Cutout diameter11 1/8″
Mounting depth7 1/16″
Overall diameter12 5/8″

“≈” 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 DS18 12″ models