DC Audio Level 4 15 D2

15″ subwoofer · dual 2 Ω · 1,500 W RMS

Fs 38 HzQts 0.85Vas 1.52 ft³Xmax 0.93″

Recommended box

For a sedan, one sub, 1,500 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 volume2.79 ft³ (79 L)
Qtc1.05
Fc47 Hz
F3 (−3 dB, no cabin gain)37 Hz
Example box (outside)31 1/2″ × 18 1/8″ × 11 5/8″
Open sealed box in designer

Ported

Net volume4.73 ft³ (134 L)
Tuning (Fb)32 Hz
Portslot 4 5/16 × 16 11/16″, 32 7/8″ long
Port velocity at 1,500 W63 ft/s
F3 (−3 dB, no cabin gain)26 Hz
Example box (outside)31 1/2″ × 18 1/8″ × 23 9/16″
Open ported box in designer
203040506080100150200667278849096HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs38 Hz
Qts0.85
Qes0.917
Qms10.88
Vas1.52 ft³
Re (one coil)≈ 1.7 Ω
Sd122.6 in²
Xmax0.93″
Vd113.4 in³ calc.
Mms362 g calc.
BL12.7 T·m calc.
EBP41 — suits sealed calc.
Sensitivity, 1 W / 1 m86.1 dB calc.

General

Size15″
Voice coilsdual 2 Ω
RMS power1,500 W

Mounting dimensions

Ø15 11/16″cutout Ø14″mounting depth 8″magnet Ø≈ 9 1/8″
Cutout diameter14″
Mounting depth8″
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