DL Audio Piranha 12 V.2 (2+2)

12″ subwoofer · dual 2 Ω · 300 W RMS

Fs 30.6 HzQts 0.68Vas 1.53 ft³

Recommended box

For a sedan, one sub, 300 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 volume1.73 ft³ (49 L)
Qtc0.93
Fc42 Hz
F3 (−3 dB, no cabin gain)36 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 8 3/4″
Open sealed box in designer

Ported

Net volume2.93 ft³ (83 L)
Tuning (Fb)30 Hz
Portslot 1 9/16 × 14 5/16″, 18 15/16″ long
Port velocity at 300 W64 ft/s
F3 (−3 dB, no cabin gain)26 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 14 15/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs30.6 Hz
Qts0.68
Qes0.767
Qms6
Vas1.53 ft³
Re (one coil)≈ 1.7 Ω
Sd≈ 76 in²
Xmax≈ 0.39″
EBP40 — suits sealed calc.
Sensitivity, 1 W / 1 m84.1 dB calc.

General

Size12″
Voice coilsdual 2 Ω
RMS power300 W

Mounting dimensions

Ø12 3/8″cutout Ø10 15/16″mounting depth 6 5/16″magnet Ø≈ 7 1/8″
Cutout diameter10 15/16″
Mounting depth6 5/16″
Overall diameter12 3/8″

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 DL Audio 12″ models