Hertz SPL Show SS 12 D2 (DVC 2+2 ohm)

12″ subwoofer · dual 2 Ω · 1,000 W RMS

Fs 36 HzQts 0.64Vas 0.87 ft³Xmax 0.61″

Recommended box

For a sedan, one sub, 1,000 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 volume1.48 ft³ (42 L)
Qtc0.80
Fc45 Hz
F3 (−3 dB, no cabin gain)42 Hz
Example box (outside)14 3/16″ × 14 3/16″ × 18 5/16″
Open sealed box in designer

Ported

Net volume3.00 ft³ (85 L)
Tuning (Fb)27 Hz
Portslot 3 1/8 × 14 5/16″, 49 9/16″ long
Port velocity at 1,000 W62 ft/s
F3 (−3 dB, no cabin gain)23 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 19 15/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs36 Hz
Qts0.64
Qes0.7
Qms7
Vas0.87 ft³
Re (one coil)1.92 Ω
Sd77.9 in²
Xmax0.61″
Vd47.2 in³ calc.
Mms285 g calc.
BL13.3 T·m calc.
EBP51 — sealed or ported calc.
Sensitivity, 1 W / 1 m84.1 dB calc.

General

Size12″
Voice coilsdual 2 Ω
RMS power1,000 W

Mounting dimensions

Ø12 5/8″cutout Ø11 1/8″mounting depth 6 5/16″magnet Ø6 11/16″
Cutout diameter11 1/8″
Mounting depth6 5/16″
Overall diameter12 5/8″
Magnet diameter6 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 Hertz 12″ models