Sundown Audio NSv2-15 D2
15″ subwoofer · dual 2 Ω · 2,000 W RMS
| 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, 2,000 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| Bass character (Qtc) | Flat and accurate · 0.71 |
|---|---|
| Fc | 53 Hz |
| F3 (−3 dB, no cabin gain) | 56 Hz |
| Example box (outside) | 17 5/16″ × 17 5/16″ × 12 3/4″ |
Ported
deeper, louder| Tuning (Fb) | 34 Hz |
|---|---|
| Port | slot 2 9/16 × 16 11/16″, 45 7/16″ long |
| Port velocity at 2,000 W | 78 ft/s |
| F3 (−3 dB, no cabin gain) | 32 Hz |
| Example box (outside) | 23 13/16″ × 18 1/8″ × 17 1/2″ |
Deeper: 2.97 ft³ (84 L) tuned to 33 Hz, 31 1/2″ × 18 1/8″ × 20″ outside — a bigger box with flatter deep bass. Open in the calculator
Projects with this subwoofer
Boxes that users designed and published: plans, cut sheet and response graph.
Thiele/Small parameters
| Size | 15″ |
|---|---|
| Voice coils | dual 2 Ω |
| RMS power | 2,000 W |
| Fs | 38.6 Hz |
| Qts | 0.51 |
| Qes | 0.53 |
| Qms | 14.02 |
| Vas | 1.36 ft³ |
| Re (one coil) | 1.97 Ω |
|---|---|
| Sd | 122 in² |
| Xmax | ≈ 0.39″ |
| Mms | 389 g calc. |
| BL | 18.7 T·m calc. |
| EBP | 73 — sealed or ported calc. |
| Sensitivity, 1 W / 1 m | 88.2 dB calc. |
Mounting dimensions
| Cutout diameter | 14 1/8″ |
|---|---|
| Mounting depth | 10 1/4″ |
| Overall diameter | 15 5/8″ |
Cone area (Sd) calculated from Fs, Vas and Mms: 122 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 15″ models
- Sundown Audio Ev2-15 D2 15″ · dual 2 Ω
- Sundown Audio Ev2-15 D4 15″ · dual 4 Ω
- Sundown Audio Ev4-15 D2 15″ · dual 2 Ω
- Sundown Audio Ev4-15 D4 15″ · dual 4 Ω
- Sundown Audio M15 D1 15″ · dual 1 Ω
- Sundown Audio M15 D2 15″ · dual 2 Ω
- Sundown Audio NSv1-15 D2 15″ · dual 2 Ω
- Sundown Audio NSv4-15 D1 15″ · dual 1 Ω
- Sundown Audio NSv4-15 D2 15″ · dual 2 Ω
- Sundown Audio NSv6-15 D1 15″ · dual 1 Ω
- Sundown Audio NSv6-15 D2 15″ · dual 2 Ω
- Sundown Audio SA Classic 15 D2 15″ · dual 2 Ω
Similar 15″ subwoofers from other brands
Close in Fs, Qts and Vas — a box of similar volume will suit them.
- Fi Audio Xv4 15 D1 1.27 ft³ sealed · 2.01 ft³ ported
- Fi Audio Xv4 15 D2 1.27 ft³ sealed · 2.01 ft³ ported
- Ground Zero GZHW 15XSPL-D1 (2x1 Ohm) 1.18 ft³ sealed · 2.05 ft³ ported
- CT Sounds THERMO-15 D4 1.36 ft³ sealed · 1.94 ft³ ported
- Ground Zero GZHW 38SPL (2x1 Ohm) 1.31 ft³ sealed · 1.94 ft³ ported
- DS18 Hooligan X HOOL-X15.2DSPL 1.61 ft³ sealed · 1.87 ft³ ported
FAQ
What box does the Sundown Audio NSv2-15 D2 need?
Recommended net volume: 1.48 ft³ sealed, 1.94 ft³ ported tuned to 34 Hz — for one sub in a sedan at 2,000 W. Fit the box to your space and amp in the free calculator, with plans and a cut sheet.
What are the Sundown Audio NSv2-15 D2 Thiele/Small specs?
Fs 38.6 Hz, Qts 0.51, Vas 1.36 ft³, Sd 122 in².
What is the Sundown Audio NSv2-15 D2 mounting depth?
Mounting depth is 10 1/4″, cutout diameter 14 1/8″. The inside depth of the box must exceed the mounting depth by at least 1″.
How much power does the Sundown Audio NSv2-15 D2 handle and how do I wire it?
RMS power rating: 2,000 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.