Sundown Audio NSv5-12 D2

12″ subwoofer · dual 2 Ω · 3,000 W RMS

Fs 38.7 HzQts 0.40Vas 0.41 ft³

Recommended box

For a sedan, one sub, 3,000 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 volume0.64 ft³ (18 L)
Qtc0.51
Fc50 Hz
F3 (−3 dB, no cabin gain)76 Hz
Example box (outside)14 3/16″ × 14 3/16″ × 9 5/16″
Open sealed box in designer

Ported

Net volume1.34 ft³ (38 L)
Tuning (Fb)27 Hz
Port2 round ports Ø2 1/2″, 25 3/8″ long
Port velocity at 3,000 W338 ft/s
F3 (−3 dB, no cabin gain)47 Hz
Example box (outside)29 1/2″ × 15 3/4″ × 8 7/16″
Open ported box in designer
2030405060801001502006066727884HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs38.7 Hz
Qts0.40
Qes0.433
Qms5.35
Vas0.41 ft³
Re (one coil)1.68 Ω
Sd71 in²
Xmax≈ 0.39″
Mms430 g calc.
BL20.2 T·m calc.
EBP89 — sealed or ported calc.
Sensitivity, 1 W / 1 m83.9 dB calc.

General

Size12″
Voice coilsdual 2 Ω
RMS power3,000 W

Mounting dimensions

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

Cone area (Sd) calculated from Fs, Vas and Mms: 71 in².

“≈” 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 Sundown Audio 12″ models