BOSS Audio P120F

12″ subwoofer · 4 Ω · 700 W RMS

Fs 44 HzQts 1.09Vas 1.56 ft³Xmax 0.28″

Recommended box

For a sedan, one sub, 700 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 volume1.73 ft³ (49 L)
Qtc1.50
Fc61 Hz
F3 (−3 dB, no cabin gain)44 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 8 3/4″
Open sealed box in designer

Ported

Net volume2.93 ft³ (83 L)
Tuning (Fb)45 Hz
Portslot 2 9/16 × 14 5/16″, 11 1/2″ long
Port velocity at 700 W61 ft/s
F3 (−3 dB, no cabin gain)36 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 14 3/4″
Open ported box in designer
2030405060801001502007278849096102HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs44 Hz
Qts1.09
Qes1.379
Qms5.14
Vas1.56 ft³
Re≈ 3.4 Ω
Sd≈ 76 in²
Xmax0.28″
EBP32 — suits sealed calc.
Sensitivity, 1 W / 1 m86.4 dB calc.

General

Size12″
Voice coils4 Ω
RMS power700 W

Mounting dimensions

Ø13″cutout Ø11″mounting depth 3 7/8″magnet Ø≈ 7 1/8″
Cutout diameter11″
Mounting depth3 7/8″
Overall diameter13″

“≈” 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 BOSS Audio 12″ models