Kicx Gorilla Bass 15 (2+2, older model)

15″ subwoofer · dual 2 Ω · 4,000 W RMS

Fs 42.1 HzQts 0.93Vas 1.08 ft³

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 volume2.15 ft³ (61 L)
Qtc1.15
Fc52 Hz
F3 (−3 dB, no cabin gain)40 Hz
Example box (outside)17 5/16″ × 17 5/16″ × 17 5/16″
Open sealed box in designer

Ported

Net volume4.66 ft³ (132 L)
Tuning (Fb)31 Hz
Portslot 5 7/8 × 16 11/16″, 50 5/8″ long
Port velocity at 4,000 W75 ft/s
F3 (−3 dB, no cabin gain)26 Hz
Example box (outside)31 1/2″ × 18 1/8″ × 28 3/4″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs42.1 Hz
Qts0.93
Qes1.091
Qms6.51
Vas1.08 ft³
Re (one coil)2.4 Ω
Sd120.7 in²
Xmax≈ 0.39″
Mms401 g calc.
BL15.3 T·m calc.
EBP39 — suits sealed calc.
Sensitivity, 1 W / 1 m85.2 dB calc.

General

Size15″
Voice coilsdual 2 Ω
RMS power4,000 W

Mounting dimensions

Ø≈ 15 5/16″cutout Ø14 1/8″mounting depth 11 1/8″magnet Ø≈ 9 3/16″
Cutout diameter14 1/8″
Mounting depth11 1/8″

Judging by its value, the published Re is for both coils in series — converted to per coil.

“≈” 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 Kicx 15″ models