Earthquake Tremor-X154

15″ subwoofer · 4 Ω · 450 W RMS

Fs 28.8 HzQts 0.67Vas 4.90 ft³Xmax 1.20″

Recommended box

For a sedan, one sub, 450 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 volume2.83 ft³ (80 L)
Qtc1.10
Fc48 Hz
F3 (−3 dB, no cabin gain)38 Hz
Example box (outside)31 1/2″ × 17 11/16″ × 12″
Open sealed box in designer

Ported

Net volume4.80 ft³ (136 L)
Tuning (Fb)35 Hz
Portslot 1 15/16 × 16 5/16″, 9 7/8″ long
Port velocity at 450 W61 ft/s
F3 (−3 dB, no cabin gain)31 Hz
Example box (outside)31 1/2″ × 17 11/16″ × 19 13/16″
Open ported box in designer
203040506080100150200667278849096HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs28.8 Hz
Qts0.67
Qes0.89
Qms2.66
Vas4.90 ft³
Re≈ 3.4 Ω
Sd≈ 124 in²
Xmax1.20″
EBP32 — suits sealed calc.
Sensitivity, 1 W / 1 m87.7 dB calc.

General

Size15″
Voice coils4 Ω
RMS power450 W

Mounting dimensions

Ø15 7/16″cutout ≈ Ø13 7/8″mounting depth 6 3/4″magnet Ø≈ 9 1/16″
Cutout diameter≈ 13 7/8″
Mounting depth6 3/4″
Overall diameter15 7/16″

“≈” 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 Earthquake 15″ models