Magnum MHW 12-22DCLE

12″ subwoofer · dual 2 Ω · 1,800 W RMS

Fs 37 HzQts 0.58Vas 0.85 ft³

Recommended box

For a sedan, one sub, 1,800 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 volume0.92 ft³ (26 L)
Qtc0.80
Fc51 Hz
F3 (−3 dB, no cabin gain)48 Hz
Example box (outside)14 3/16″ × 14 3/16″ × 12 5/16″
Open sealed box in designer

Ported

Net volume2.61 ft³ (74 L)
Tuning (Fb)29 Hz
Portslot 3 9/16 × 14 5/16″, 55 7/8″ long
Port velocity at 1,800 W73 ft/s
F3 (−3 dB, no cabin gain)25 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 19 15/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs37 Hz
Qts0.58
Qes0.63
Qms6.8
Vas0.85 ft³
Re (one coil)2 Ω
Sd76.9 in²
Xmax≈ 0.39″
Mms269 g calc.
BL14.1 T·m calc.
EBP59 — sealed or ported calc.
Sensitivity, 1 W / 1 m84.9 dB calc.

General

Size12″
Voice coilsdual 2 Ω
RMS power1,800 W

Mounting dimensions

Ø12 5/8″cutout Ø11 1/8″mounting depth 7 1/16″magnet Ø≈ 7 1/4″
Cutout diameter11 1/8″
Mounting depth7 1/16″
Overall diameter12 5/8″

Cone area (Sd) calculated from Fs, Vas and Mms: 76.9 in².

Judging by its value, the published Re is for both coils in series — converted to per coil.

“≈” 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 Magnum 12″ models