DL Audio Legend 12 (1+1)

12″ subwoofer · dual 1 Ω · 3,500 W RMS

Fs 26.8 HzQts 0.51Vas 0.82 ft³

Recommended box

For a sedan, one sub, 3,500 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 volume0.83 ft³ (23.5 L)
Qtc0.72
Fc38 Hz
F3 (−3 dB, no cabin gain)39 Hz
Example box (outside)14 3/16″ × 14 3/16″ × 11 3/8″
Open sealed box in designer

Ported

Net volume1.77 ft³ (50 L)
Tuning (Fb)25 Hz
Port2 round ports Ø2 1/2″, 22 5/16″ long
Port velocity at 3,500 W382 ft/s
F3 (−3 dB, no cabin gain)22 Hz
Example box (outside)26 13/16″ × 15 3/4″ × 11 1/4″
Open ported box in designer
2030405060801001502006066727884HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs26.8 Hz
Qts0.51
Qes0.557
Qms6
Vas0.82 ft³
Re (one coil)≈ 0.85 Ω
Sd≈ 76 in²
Xmax≈ 0.39″
EBP48 — suits sealed calc.
Sensitivity, 1 W / 1 m81.1 dB calc.

General

Size12″
Voice coilsdual 1 Ω
RMS power3,500 W

Mounting dimensions

Ø12 1/2″cutout Ø11 3/16″mounting depth 8 13/16″magnet Ø≈ 7 1/4″
Cutout diameter11 3/16″
Mounting depth8 13/16″
Overall diameter12 1/2″

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