DC Audio RS 12 D1

12″ subwoofer · dual 1 Ω · 1,800 W RMS

Fs 55.8 HzQts 0.80Vas 0.32 ft³Xmax 0.94″

Recommended box

For a sedan, one sub, 1,800 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 volume0.71 ft³ (20 L)
Qtc0.96
Fc67 Hz
F3 (−3 dB, no cabin gain)55 Hz
Example box (outside)14 3/16″ × 14 3/16″ × 10 1/16″
Open sealed box in designer

Ported

Net volume2.47 ft³ (70 L)
Tuning (Fb)32 Hz
Portslot 4 1/8 × 14 5/16″, 56 3/16″ long
Port velocity at 1,800 W65 ft/s
F3 (−3 dB, no cabin gain)28 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 20 7/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs55.8 Hz
Qts0.80
Qes0.88
Qms8.63
Vas0.32 ft³
Re (one coil)≈ 0.85 Ω
Sd76.7 in²
Xmax0.94″
Vd72.5 in³ calc.
Mms316 g calc.
BL10.3 T·m calc.
EBP63 — sealed or ported calc.
Sensitivity, 1 W / 1 m84.5 dB calc.

General

Size12″
Voice coilsdual 1 Ω
RMS power1,800 W

Mounting dimensions

Ø12 1/2″cutout Ø11″mounting depth 7″magnet Ø≈ 7 1/8″
Cutout diameter11″
Mounting depth7″
Overall diameter12 1/2″

“≈” 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 DC Audio 12″ models