Pride Junior Pro 12 D2

12″ subwoofer · dual 2 Ω · 800 W RMS

Fs 28 HzQts 0.38Vas 1.98 ft³Xmax 0.73″

Recommended box

For a sedan, one sub, 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 volume0.67 ft³ (19 L)
Qtc0.76
Fc56 Hz
F3 (−3 dB, no cabin gain)56 Hz
Example box (outside)14 3/16″ × 14 3/16″ × 9 11/16″
Open sealed box in designer

Ported

Net volume1.84 ft³ (52 L)
Tuning (Fb)31 Hz
Portslot 2 3/16 × 14 5/16″, 42 3/8″ long
Port velocity at 800 W61 ft/s
F3 (−3 dB, no cabin gain)30 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 13 1/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs28 Hz
Qts0.38
Qes0.406
Qms6
Vas1.98 ft³
Re (one coil)1.85 Ω
Sd74.4 in²
Xmax0.73″
Vd54.2 in³ calc.
Mms188 g calc.
BL12.3 T·m calc.
EBP69 — sealed or ported calc.
Sensitivity, 1 W / 1 m86.8 dB calc.

General

Size12″
Voice coilsdual 2 Ω
RMS power800 W

Mounting dimensions

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

Only Qts is published — Qms assumed to be 6 and Qes calculated (barely affects box design).

“≈” 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 Pride 12″ models