DC Audio XL-Elite 18 D2

18″ subwoofer · dual 2 Ω · 2,200 W RMS

Fs 27.9 HzQts 0.58Vas 4.56 ft³Xmax 1.34″

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 volume4.10 ft³ (116 L)
Qtc0.84
Fc40 Hz
F3 (−3 dB, no cabin gain)37 Hz
Example box (outside)20 1/16″ × 20 1/16″ × 23 1/8″
Open sealed box in designer

Ported

Net volume6.96 ft³ (197 L)
Tuning (Fb)28 Hz
Portslot 4 3/4 × 19 7/16″, 37 1/8″ long
Port velocity at 2,200 W65 ft/s
F3 (−3 dB, no cabin gain)25 Hz
Example box (outside)31 1/2″ × 20 7/8″ × 29 1/4″
Open ported box in designer
203040506080100150200667278849096HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs27.9 Hz
Qts0.58
Qes0.62
Qms8.27
Vas4.56 ft³
Re (one coil)≈ 1.7 Ω
Sd179.6 in²
Xmax1.34″
Vd240.5 in³ calc.
Mms481 g calc.
BL15.2 T·m calc.
EBP45 — suits sealed calc.
Sensitivity, 1 W / 1 m88.5 dB calc.

General

Size18″
Voice coilsdual 2 Ω
RMS power2,200 W

Mounting dimensions

Ø18 1/2″cutout Ø16 7/8″mounting depth 12″magnet Ø≈ 11″
Cutout diameter16 7/8″
Mounting depth12″
Overall diameter18 1/2″

“≈” 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 18″ models