Magnat Destructor 1200

12″ subwoofer · 4 Ω · 350 W RMS

Fs 22 HzQts 0.28Vas 3.71 ft³

Recommended box

For a sedan, one sub, 350 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)
Qtc0.63
Fc49 Hz
F3 (−3 dB, no cabin gain)60 Hz
Example box (outside)15 3/4″ × 15 3/4″ × 10 1/16″
Open sealed box in designer

Ported

Net volume1.45 ft³ (41 L)
Tuning (Fb)32 Hz
Port2 round ports Ø2 1/2″, 16 1/8″ long
Port velocity at 350 W106 ft/s
F3 (−3 dB, no cabin gain)34 Hz
Example box (outside)23 3/4″ × 16 9/16″ × 10 1/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs22 Hz
Qts0.28
Qes0.294
Qms6
Vas3.71 ft³
Re≈ 3.4 Ω
Sd≈ 76 in²
Xmax≈ 0.39″
EBP75 — sealed or ported calc.
Sensitivity, 1 W / 1 m87.8 dB calc.

General

Size12″
Voice coils4 Ω
RMS power350 W

Mounting dimensions

Ø14 7/16″cutout Ø12 7/16″mounting depth 7 1/2″magnet Ø≈ 8 1/16″
Cutout diameter12 7/16″
Mounting depth7 1/2″
Overall diameter14 7/16″

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 Magnat 12″ models