Triton Shiver Bass 3.8 18

18″ subwoofer · 4 Ω · 1,900 W RMS

Fs 43.5 HzQts 0.39Vas 3.92 ft³Xmax 0.49″

Recommended box

For a sedan, one sub, 1,900 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 volume1.77 ft³ (50 L)
Qtc0.70
Fc78 Hz
F3 (−3 dB, no cabin gain)84 Hz
Example box (outside)19 11/16″ × 19 11/16″ × 12″
Open sealed box in designer

Ported

Net volume3.88 ft³ (110 L)
Tuning (Fb)46 Hz
Portslot 4 5/16 × 19 1/16″, 19 5/16″ long
Port velocity at 1,900 W64 ft/s
F3 (−3 dB, no cabin gain)45 Hz
Example box (outside)31 1/2″ × 20 1/2″ × 17″
Open ported box in designer
2030405060801001502007278849096102HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs43.5 Hz
Qts0.39
Qes0.4
Qms13.12
Vas3.92 ft³
Re3 Ω
Sd193.4 in²
Xmax0.49″
Vd95.2 in³ calc.
Mms266 g calc.
BL23.4 T·m calc.
EBP109 — suits ported calc.
Sensitivity, 1 W / 1 m95.6 dB calc.

General

Size18″
Voice coils4 Ω
RMS power1,900 W

Mounting dimensions

Ø≈ 17 11/16″cutout ≈ Ø16 9/16″mounting depth ≈ 8 1/4″magnet Ø8 7/8″
Cutout diameter≈ 16 9/16″
Mounting depth≈ 8 1/4″
Magnet diameter8 7/8″

“≈” 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 Triton 18″ models