Infinity Reference 1262W

12″ subwoofer · dual 4 Ω · 300 W RMS

Fs 25 HzQts 0.46Vas 2.83 ft³Xmax 0.51″

Recommended box

For a sedan, one sub, 300 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 volume1.38 ft³ (39 L)
Qtc0.80
Fc44 Hz
F3 (−3 dB, no cabin gain)42 Hz
Example box (outside)14 3/16″ × 14 3/16″ × 17 3/16″
Open sealed box in designer

Ported

Net volume3.18 ft³ (90 L)
Tuning (Fb)27 Hz
Portslot 1 9/16 × 14 5/16″, 22 1/8″ long
Port velocity at 300 W63 ft/s
F3 (−3 dB, no cabin gain)25 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 16 1/8″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs25 Hz
Qts0.46
Qes0.49
Qms6.84
Vas2.83 ft³
Re (one coil)3.6 Ω
Sd82.3 in²
Xmax0.51″
Vd42.1 in³ calc.
Mms202 g calc.
BL15.3 T·m calc.
EBP51 — sealed or ported calc.
Sensitivity, 1 W / 1 m86.1 dB calc.

General

Size12″
Voice coilsdual 4 Ω
RMS power300 W

Mounting dimensions

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

“≈” 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 Infinity 12″ models