DLS MCW12

12″ subwoofer · 4 Ω · 250 W RMS

Fs 33.5 HzQts 0.52Vas 2.01 ft³Xmax 0.35″

Recommended box

For a sedan, one sub, 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 volume1.48 ft³ (42 L)
Qtc0.80
Fc51 Hz
F3 (−3 dB, no cabin gain)49 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 7 13/16″
Open sealed box in designer

Ported

Net volume2.93 ft³ (83 L)
Tuning (Fb)33 Hz
Portslot 1 9/16 × 14 5/16″, 15″ long
Port velocity at 250 W62 ft/s
F3 (−3 dB, no cabin gain)30 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 14 5/8″
Open ported box in designer
203040506080100150200667278849096HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs33.5 Hz
Qts0.52
Qes0.569
Qms6
Vas2.01 ft³
Re3 Ω
Sd≈ 76 in²
Xmax0.35″
EBP59 — sealed or ported calc.
Sensitivity, 1 W / 1 m87.8 dB calc.

General

Size12″
Voice coils4 Ω
RMS power250 W

Mounting dimensions

Ø12 3/16″cutout Ø11″mounting depth 5 1/8″magnet Ø≈ 7 3/16″
Cutout diameter11″
Mounting depth5 1/8″
Overall diameter12 3/16″

Only Qts is published — Qms assumed to be 6 and Qes calculated (barely affects box design).

“≈” 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 DLS 12″ models