Massive Audio HIPPO XL122

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

Fs 46.2 HzQts 0.45Vas 0.50 ft³Xmax 0.69″

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)
Qtc0.58
Fc60 Hz
F3 (−3 dB, no cabin gain)77 Hz
Example box (outside)14 3/16″ × 14 3/16″ × 10 7/16″
Open sealed box in designer

Ported

Net volume1.59 ft³ (45 L)
Tuning (Fb)33 Hz
Portslot 2 3/16 × 14 5/16″, 43 5/16″ long
Port velocity at 2,000 W109 ft/s
F3 (−3 dB, no cabin gain)30 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 12 1/8″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs46.2 Hz
Qts0.45
Qes0.477
Qms7.98
Vas0.50 ft³
Re (one coil)1.8 Ω
Sd82.2 in²
Xmax0.69″
Vd56.6 in³ calc.
Mms333 g calc.
BL19.1 T·m calc.
EBP97 — sealed or ported calc.
Sensitivity, 1 W / 1 m86.7 dB calc.

General

Size12″
Voice coilsdual 2 Ω
RMS power2,000 W

Mounting dimensions

Ø12 11/16″cutout Ø11 1/8″mounting depth 7 13/16″magnet Ø≈ 7 1/4″
Cutout diameter11 1/8″
Mounting depth7 13/16″
Overall diameter12 11/16″

“≈” 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 Massive Audio 12″ models