Sundown Audio NSv4-10 D2

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

46.8 HzFs, resonance

0.39Qts

0.19 ft³Vas

3,000 WRMS

Source	web.archive.org · manufacturer data
Checked against source	October 2026
Thiele/Small parameters	not in the spec sheet: Xmax — typical value for the size used
Mounting dimensions	3 of 4 — missing: magnet diameter; the designer will use an estimate

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

smaller, tighter

0.90 ft³ (25.5 L)

Net volume

Bass character (Qtc)	Dry and tight · 0.43
Fc	51 Hz
F3 (−3 dB, no cabin gain)	99 Hz
Example box (outside)	13″ × 13″ × 13 7/8″

Open sealed box in designer

Ported

deeper, louder

1.59 ft³ (45 L)

Net volume

Tuning (Fb)	38 Hz
Port	slot 3 1/8 × 14 5/16″, 47″ long
Port velocity at 3,000 W	92 ft/s
F3 (−3 dB, no cabin gain)	34 Hz
Example box (outside)	23 1/4″ × 15 3/4″ × 18 1/2″

At 3,000 W this example’s port will be noisy: air speed 92 ft/s, while the limit is 82 ft/s. It stays quiet up to about 2,350 W. Full power needs a port of at least 50.5 in², which means a bigger box than this example — size it in the designer.

Open ported box in designer

Deeper: 1.02 ft³ (29 L) tuned to 27 Hz, 31 1/2″ × 15 3/4″ × 13 1/8″ outside — a bigger box with flatter deep bass. Open in the calculator

Where to buy Amazon

Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Size	10″
Voice coils	dual 2 Ω
RMS power	3,000 W
Fs	46.8 Hz
Qts	0.39
Qes	0.425
Qms	5.06
Vas	0.19 ft³

Re (one coil)	1.41 Ω
Sd	54.1 in²
Xmax	≈ 0.39″
Mms	373 g calc.
BL	19.1 T·m calc.
EBP	110 — suits ported calc.
Sensitivity, 1 W / 1 m	83.1 dB calc.

Mounting dimensions

Cutout diameter	10″
Mounting depth	11 1/4″
Overall diameter	11 5/8″

Cone area (Sd) calculated from Fs, Vas and Mms: 54.1 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 10″ models

Sundown Audio Ev2-10 D2 10″ · dual 2 Ω
Sundown Audio Ev2-10 D4 10″ · dual 4 Ω
Sundown Audio Ev4-10 D2 10″ · dual 2 Ω
Sundown Audio Ev4-10 D4 10″ · dual 4 Ω
Sundown Audio HZ-10 D4 10″ · dual 4 Ω
Sundown Audio HZS-10 D4 10″ · dual 4 Ω
Sundown Audio LCSv2-10 D4 10″ · dual 4 Ω
Sundown Audio M10 D1 10″ · dual 1 Ω
Sundown Audio M10 D2 10″ · dual 2 Ω
Sundown Audio NSv2-10 D2 10″ · dual 2 Ω
Sundown Audio NSv4-10 D1 10″ · dual 1 Ω
Sundown Audio NSv5-10 D1 10″ · dual 1 Ω

Similar 10″ subwoofers from other brands

Close in Fs, Qts and Vas — a box of similar volume will suit them.

DC Audio RS 10 D1 0.48 ft³ sealed · 0.81 ft³ ported
DC Audio RS 10 D2 0.48 ft³ sealed · 0.81 ft³ ported
Fi Audio Alpha v1 10 S1 0.42 ft³ sealed · 1.41 ft³ ported
Fi Audio Alpha v1 10 S2 0.42 ft³ sealed · 1.41 ft³ ported
Fi Audio Alpha v1 10 S4 0.42 ft³ sealed · 1.41 ft³ ported
Ground Zero GZPW 10SPL (2x1 Ohm) 0.57 ft³ sealed · 0.85 ft³ ported

FAQ

What box does the Sundown Audio NSv4-10 D2 need?

Recommended net volume: 0.90 ft³ sealed, 1.59 ft³ ported tuned to 38 Hz — for one sub in a sedan at 3,000 W. Fit the box to your space and amp in the free calculator, with plans and a cut sheet.

What are the Sundown Audio NSv4-10 D2 Thiele/Small specs?

Fs 46.8 Hz, Qts 0.39, Vas 0.19 ft³, Sd 54.1 in².

What is the Sundown Audio NSv4-10 D2 mounting depth?

Mounting depth is 11 1/4″, cutout diameter 10″. The inside depth of the box must exceed the mounting depth by at least 1″.

How much power does the Sundown Audio NSv4-10 D2 handle and how do I wire it?

RMS power rating: 3,000 W. Dual 2 Ω voice coils: series gives 4 Ω, parallel gives 1 Ω at the amp. Wiring for several subs and amp power — in the wiring calculator.