DD Audio 9515L ESP D1

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

Fs 39 HzQts 0.67Vas 1.87 ft³Xmax 1.26″

Recommended box

For a sedan, one sub, 2,500 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 volume2.83 ft³ (80 L)
Qtc0.86
Fc50 Hz
F3 (−3 dB, no cabin gain)45 Hz
Example box (outside)18 1/2″ × 18 1/2″ × 19 3/16″
Open sealed box in designer

Ported

Net volume4.80 ft³ (136 L)
Tuning (Fb)33 Hz
Portslot 5 5/16 × 17 7/8″, 40 1/2″ long
Port velocity at 2,500 W64 ft/s
F3 (−3 dB, no cabin gain)28 Hz
Example box (outside)31 1/2″ × 19 5/16″ × 25 1/4″
Open ported box in designer
203040506080100150200667278849096HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs39 Hz
Qts0.67
Qes0.738
Qms6.92
Vas1.87 ft³
Re (one coil)≈ 0.85 Ω
Sd≈ 124 in²
Xmax1.26″
EBP53 — sealed or ported calc.
Sensitivity, 1 W / 1 m88.3 dB calc.

General

Size15″
Voice coilsdual 1 Ω
RMS power2,500 W

Mounting dimensions

Ø16 5/8″cutout Ø15 3/16″mounting depth 10 3/8″magnet Ø≈ 9 7/8″
Cutout diameter15 3/16″
Mounting depth10 3/8″
Overall diameter16 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 DD Audio 15″ models