Pride S V.3 18 D1

18″ subwoofer · dual 1 Ω · 4,000 W RMS

Fs 22 HzQts 0.32Vas 6.71 ft³Xmax 1.42″

Recommended box

For a sedan, one sub, 4,000 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 volume2.31 ft³ (65.5 L)
Qtc0.63
Fc43 Hz
F3 (−3 dB, no cabin gain)52 Hz
Example box (outside)20 1/16″ × 20 1/16″ × 14 5/16″
Open sealed box in designer

Ported

Net volume3.92 ft³ (111 L)
Tuning (Fb)29 Hz
Portslot 4 5/16 × 19 7/16″, 60 11/16″ long
Port velocity at 4,000 W70 ft/s
F3 (−3 dB, no cabin gain)29 Hz
Example box (outside)31 1/2″ × 20 7/8″ × 23 5/8″
Open ported box in designer
203040506080100150200667278849096HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs22 Hz
Qts0.32
Qes0.338
Qms6
Vas6.71 ft³
Re (one coil)≈ 0.85 Ω
Sd204.6 in²
Xmax1.42″
Vd290 in³ calc.
Mms680 g calc.
BL15.4 T·m calc.
EBP65 — sealed or ported calc.
Sensitivity, 1 W / 1 m89.8 dB calc.

General

Size18″
Voice coilsdual 1 Ω
RMS power4,000 W

Mounting dimensions

Ø≈ 18 1/8″cutout Ø16 15/16″mounting depth 11 7/8″magnet Ø≈ 11″
Cutout diameter16 15/16″
Mounting depth11 7/8″

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 18″ models