Massive Audio HIPPO XL122R

12″ subwoofer · dual 2 Ω · 3,000 W RMS

Fs 44.7 HzQts 0.40Vas 0.50 ft³Xmax 0.87″

Recommended box

For a sedan, one sub, 3,000 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 volume0.76 ft³ (21.5 L)
Qtc0.51
Fc58 Hz
F3 (−3 dB, no cabin gain)89 Hz
Example box (outside)14 3/16″ × 14 3/16″ × 10 5/8″
Open sealed box in designer

Ported

Net volume1.59 ft³ (45 L)
Tuning (Fb)32 Hz
Portround port Ø2 1/2″, 6 3/8″ long
Port velocity at 3,000 W805 ft/s
F3 (−3 dB, no cabin gain)30 Hz
Example box (outside)23 7/8″ × 15 3/4″ × 10 5/8″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs44.7 Hz
Qts0.40
Qes0.424
Qms5.97
Vas0.50 ft³
Re (one coil)1.8 Ω
Sd82.2 in²
Xmax0.87″
Vd71.2 in³ calc.
Mms355 g calc.
BL20.6 T·m calc.
EBP105 — suits ported calc.
Sensitivity, 1 W / 1 m86.8 dB calc.

General

Size12″
Voice coilsdual 2 Ω
RMS power3,000 W

Mounting dimensions

Ø12 11/16″cutout Ø11 1/8″mounting depth 8 3/16″magnet Ø≈ 7 1/4″
Cutout diameter11 1/8″
Mounting depth8 3/16″
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