DL Audio Phoenix Black Bass 12 (2+2)

12″ subwoofer · dual 2 Ω · 700 W RMS

28.7 HzFs, resonance
0.58Qts
1.10 ft³Vas
700 WRMS

Recommended box

For a sedan, one sub, 700 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

smaller, tighter
1.24 ft³ (35 L)
Net volume
Qtc0.80
Fc39 Hz
F3 (−3 dB, no cabin gain)37 Hz
Example box (outside)13 3/4″ × 13 3/4″ × 16 9/16″
Open sealed box in designer

Ported

deeper, louder
2.93 ft³ (83 L)
Net volume
Tuning (Fb)25 Hz
Portslot 2 3/8 × 14 5/16″, 44 9/16″ long
Port velocity at 700 W65 ft/s
F3 (−3 dB, no cabin gain)22 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 17 15/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs28.7 Hz
Qts0.58
Qes0.646
Qms6
Vas1.10 ft³
Re (one coil)≈ 1.7 Ω
Sd≈ 76 in²
Xmax≈ 0.39″
EBP44 — suits sealed calc.
Sensitivity, 1 W / 1 m82.6 dB calc.

General

Size12″
Voice coilsdual 2 Ω
RMS power700 W

Mounting dimensions

Ø12 7/16″cutout Ø10 11/16″mounting depth 7 9/16″magnet Ø≈ 6 15/16″
Cutout diameter10 11/16″
Mounting depth7 9/16″
Overall diameter12 7/16″

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