Phoenix Gold SX112D2 (DVC 2 ohm)

12″ subwoofer · dual 2 Ω · 400 W RMS

Fs 31.2 HzQts 0.55Vas 1.45 ft³Xmax 0.69″

Recommended box

For a sedan, one sub, 400 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 volume1.27 ft³ (36 L)
Qtc0.80
Fc46 Hz
F3 (−3 dB, no cabin gain)43 Hz
Example box (outside)14 9/16″ × 14 9/16″ × 15 3/16″
Open sealed box in designer

Ported

Net volume3.07 ft³ (87 L)
Tuning (Fb)28 Hz
Portslot 1 15/16 × 14 5/16″, 26 15/16″ long
Port velocity at 400 W62 ft/s
F3 (−3 dB, no cabin gain)25 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 16 7/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs31.2 Hz
Qts0.55
Qes0.629
Qms4.11
Vas1.45 ft³
Re (one coil)2.2 Ω
Sd79.1 in²
Xmax0.69″
Vd54.5 in³ calc.
Mms233 g calc.
BL12.6 T·m calc.
EBP50 — suits sealed calc.
Sensitivity, 1 W / 1 m85 dB calc.

General

Size12″
Voice coilsdual 2 Ω
RMS power400 W

Mounting dimensions

Ø≈ 12 3/8″cutout Ø11 1/4″mounting depth 6 5/16″magnet Ø≈ 7 5/16″
Cutout diameter11 1/4″
Mounting depth6 5/16″

“≈” 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 Phoenix Gold 12″ models