Magnum MXW 12-22DC

12″ subwoofer · dual 2 Ω · 2,000 W RMS

Fs 43.6 HzQts 0.47Vas 1.12 ft³

Recommended box

For a sedan, one sub, 2,000 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 volume0.74 ft³ (21 L)
Qtc0.74
Fc69 Hz
F3 (−3 dB, no cabin gain)69 Hz
Example box (outside)14 3/16″ × 14 3/16″ × 10 7/16″
Open sealed box in designer

Ported

Net volume1.91 ft³ (54 L)
Tuning (Fb)39 Hz
Portslot 3 15/16 × 14 5/16″, 45 13/16″ long
Port velocity at 2,000 W64 ft/s
F3 (−3 dB, no cabin gain)36 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 16 1/4″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs43.6 Hz
Qts0.47
Qes0.518
Qms5
Vas1.12 ft³
Re (one coil)≈ 1.7 Ω
Sd80.5 in²
Xmax≈ 0.39″
Mms161 g calc.
BL12 T·m calc.
EBP84 — sealed or ported calc.
Sensitivity, 1 W / 1 m89 dB calc.

General

Size12″
Voice coilsdual 2 Ω
RMS power2,000 W

Mounting dimensions

Ø12 5/8″cutout Ø11 1/8″mounting depth 6 13/16″magnet Ø≈ 7 3/16″
Cutout diameter11 1/8″
Mounting depth6 13/16″
Overall diameter12 5/8″

Cone area (Sd) calculated from Fs, Vas and Mms: 80.5 in².

“≈” 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