DC Audio XL-SPL 15 D4

15″ subwoofer · dual 4 Ω · 2,200 W RMS

Fs 34.3 HzQts 0.50Vas 2.33 ft³Xmax 1.02″

Recommended box

For a sedan, one sub, 2,200 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 volume1.48 ft³ (42 L)
Qtc0.80
Fc55 Hz
F3 (−3 dB, no cabin gain)52 Hz
Example box (outside)17 5/16″ × 17 5/16″ × 12 3/4″
Open sealed box in designer

Ported

Net volume4.73 ft³ (134 L)
Tuning (Fb)30 Hz
Portslot 5 1/8 × 16 11/16″, 46″ long
Port velocity at 2,200 W64 ft/s
F3 (−3 dB, no cabin gain)27 Hz
Example box (outside)31 1/2″ × 18 1/8″ × 26 15/16″
Open ported box in designer
203040506080100150200667278849096HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs34.3 Hz
Qts0.50
Qes0.516
Qms16.55
Vas2.33 ft³
Re (one coil)≈ 3.4 Ω
Sd122.6 in²
Xmax1.02″
Vd125.5 in³ calc.
Mms289 g calc.
BL20.3 T·m calc.
EBP66 — sealed or ported calc.
Sensitivity, 1 W / 1 m89.1 dB calc.

General

Size15″
Voice coilsdual 4 Ω
RMS power2,200 W

Mounting dimensions

Ø15 11/16″cutout Ø14″mounting depth 10 1/4″magnet Ø≈ 9 1/8″
Cutout diameter14″
Mounting depth10 1/4″
Overall diameter15 11/16″

“≈” 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 DC Audio 15″ models