Avatar Volcano 12 D2

12″ subwoofer · dual 2 Ω · 2,500 W RMS

Fs 31 HzQts 0.54Vas 0.90 ft³Xmax 0.98″

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 volume0.85 ft³ (24 L)
Qtc0.78
Fc45 Hz
F3 (−3 dB, no cabin gain)43 Hz
Example box (outside)14 3/16″ × 14 3/16″ × 11 9/16″
Open sealed box in designer

Ported

Net volume2.30 ft³ (65 L)
Tuning (Fb)26 Hz
Portslot 2 3/16 × 14 5/16″, 48 7/8″ long
Port velocity at 2,500 W121 ft/s
F3 (−3 dB, no cabin gain)23 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 15 1/2″
Open ported box in designer
2030405060801001502006066727884HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs31 Hz
Qts0.54
Qes0.593
Qms6
Vas0.90 ft³
Re (one coil)≈ 1.7 Ω
Sd≈ 76 in²
Xmax0.98″
EBP52 — sealed or ported calc.
Sensitivity, 1 W / 1 m83.1 dB calc.

General

Size12″
Voice coilsdual 2 Ω
RMS power2,500 W

Mounting dimensions

Ø≈ 12 5/16″cutout Ø11 1/8″mounting depth 9″magnet Ø≈ 7 1/4″
Cutout diameter11 1/8″
Mounting depth9″

Only Qts is published — Qms assumed to be 6 and Qes calculated (barely affects box design).

“≈” 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 Avatar 12″ models