PSI Bass-line 15

15″ subwoofer · 3 Ω · 600 W RMS

Fs 33.1 HzQts 0.67Vas 3.39 ft³Xmax 0.87″

Recommended box

For a sedan, one sub, 600 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 volume2.93 ft³ (83 L)
Qtc0.99
Fc49 Hz
F3 (−3 dB, no cabin gain)40 Hz
Example box (outside)31 1/2″ × 18 1/8″ × 12 1/8″
Open sealed box in designer

Ported

Net volume4.98 ft³ (141 L)
Tuning (Fb)35 Hz
Portslot 2 9/16 × 16 11/16″, 13 5/16″ long
Port velocity at 600 W65 ft/s
F3 (−3 dB, no cabin gain)30 Hz
Example box (outside)31 1/2″ × 18 1/8″ × 20 9/16″
Open ported box in designer
203040506080100150200667278849096HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs33.1 Hz
Qts0.67
Qes0.73
Qms8.32
Vas3.39 ft³
Re2.8 Ω
Sd128.7 in²
Xmax0.87″
Vd111.4 in³ calc.
Mms235 g calc.
BL13.7 T·m calc.
EBP45 — suits sealed calc.
Sensitivity, 1 W / 1 m88.8 dB calc.

General

Size15″
Voice coils3 Ω
RMS power600 W

Mounting dimensions

Ø15 1/2″cutout Ø14″mounting depth 7″magnet Ø≈ 9 1/8″
Cutout diameter14″
Mounting depth7″
Overall diameter15 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 PSI 15″ models