Orion XTRPRO154 (XTR PRO 15" DVC 4ohm)

15″ subwoofer · dual 4 Ω · 1,800 W RMS

Fs 31.6 HzQts 0.45Vas 2.59 ft³Xmax 0.53″

Recommended box

For a sedan, one sub, 1,800 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 volume1.87 ft³ (53 L)
Qtc0.69
Fc49 Hz
F3 (−3 dB, no cabin gain)52 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)30 Hz
Portslot 3 9/16 × 19 1/16″, 44 13/16″ long
Port velocity at 1,800 W64 ft/s
F3 (−3 dB, no cabin gain)28 Hz
Example box (outside)31 1/2″ × 20 1/2″ × 19 11/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs31.6 Hz
Qts0.45
Qes0.471
Qms9.27
Vas2.59 ft³
Re (one coil)3.4 Ω
Sd135.8 in²
Xmax0.53″
Vd71.6 in³ calc.
Mms376 g calc.
BL23.2 T·m calc.
EBP67 — sealed or ported calc.
Sensitivity, 1 W / 1 m88.9 dB calc.

General

Size15″
Voice coilsdual 4 Ω
RMS power1,800 W

Mounting dimensions

Ø≈ 17 13/16″cutout Ø16 5/8″mounting depth 9 5/8″magnet Ø≈ 10 13/16″
Cutout diameter16 5/8″
Mounting depth9 5/8″

“≈” 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 Orion 15″ models