Edge EDB12D2X-E7

12″ subwoofer · dual 2 Ω · 900 W RMS

Fs 29.9 HzQts 0.45Vas 1.31 ft³

Recommended box

For a sedan, one sub, 900 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 volume0.67 ft³ (19 L)
Qtc0.77
Fc51 Hz
F3 (−3 dB, no cabin gain)50 Hz
Example box (outside)14 3/16″ × 14 3/16″ × 9 11/16″
Open sealed box in designer

Ported

Net volume1.98 ft³ (56 L)
Tuning (Fb)29 Hz
Portslot 2 3/8 × 14 5/16″, 49 5/8″ long
Port velocity at 900 W62 ft/s
F3 (−3 dB, no cabin gain)27 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 14 5/8″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs29.9 Hz
Qts0.45
Qes0.5
Qms4.41
Vas1.31 ft³
Re (one coil)1.95 Ω
Sd72.9 in²
Xmax≈ 0.39″
Mms240 g calc.
BL13.2 T·m calc.
EBP60 — sealed or ported calc.
Sensitivity, 1 W / 1 m85 dB calc.

General

Size12″
Voice coilsdual 2 Ω
RMS power900 W

Mounting dimensions

Ø≈ 12 5/16″cutout ≈ Ø11 1/8″mounting depth 6 9/16″magnet Ø≈ 7 3/16″
Cutout diameter≈ 11 1/8″
Mounting depth6 9/16″

“≈” 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 Edge 12″ models