DS18 GEN-X124D

12″ subwoofer · dual 4 Ω · 450 W RMS

Fs 43 HzQts 0.67Vas 0.83 ft³Xmax 0.70″

Recommended box

For a sedan, one sub, 450 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 volume1.66 ft³ (47 L)
Qtc0.82
Fc53 Hz
F3 (−3 dB, no cabin gain)48 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 8 1/2″
Open sealed box in designer

Ported

Net volume2.93 ft³ (83 L)
Tuning (Fb)32 Hz
Portslot 2 3/16 × 14 5/16″, 23 1/16″ long
Port velocity at 450 W65 ft/s
F3 (−3 dB, no cabin gain)28 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 15 11/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs43 Hz
Qts0.67
Qes0.748
Qms6.31
Vas0.83 ft³
Re (one coil)3.2 Ω
Sd76.1 in²
Xmax0.70″
Vd53.3 in³ calc.
Mms200 g calc.
BL15.2 T·m calc.
EBP57 — sealed or ported calc.
Sensitivity, 1 W / 1 m86 dB calc.

General

Size12″
Voice coilsdual 4 Ω
RMS power450 W

Mounting dimensions

Ø12 7/16″cutout Ø10 7/8″mounting depth 5 3/4″magnet Ø≈ 7 1/16″
Cutout diameter10 7/8″
Mounting depth5 3/4″
Overall diameter12 7/16″

“≈” 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