Sundown Audio Zv4-15 D1
15″ subwoofer · dual 1 Ω · 1,750 W RMS
| Source | web.archive.org · manufacturer data |
|---|---|
| Checked against source | October 2026 |
| Thiele/Small parameters | complete |
| Mounting dimensions | 3 of 4 — missing: magnet diameter; the designer will use an estimate |
Recommended box
For a sedan, one sub, 1,750 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) | Dry and tight · 0.61 |
|---|---|
| Fc | 41 Hz |
| F3 (−3 dB, no cabin gain) | 50 Hz |
| Example box (outside) | 16 15/16″ × 16 15/16″ × 14 1/2″ |
Ported
deeper, louder| Tuning (Fb) | 30 Hz |
|---|---|
| Port | slot 3 15/16 × 16 5/16″, 48 7/16″ long |
| Port velocity at 1,750 W | 65 ft/s |
| F3 (−3 dB, no cabin gain) | 27 Hz |
| Example box (outside) | 31 1/2″ × 17 11/16″ × 21 3/8″ |
Deeper: 2.47 ft³ (70 L) tuned to 28 Hz, 26 1/4″ × 17 11/16″ × 19 5/16″ 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 1 Ω |
| RMS power | 1,750 W |
| Fs | 24.8 Hz |
| Qts | 0.37 |
| Qes | 0.4 |
| Qms | 5.78 |
| Vas | 2.78 ft³ |
| Re (one coil) | 0.85 Ω |
|---|---|
| Sd | 116.3 in² |
| Xmax | 1.38″ |
| Vd | 160.3 in³ calc. |
| Mms | 418 g calc. |
| BL | 11.8 T·m calc. |
| EBP | 62 — sealed or ported calc. |
| Sensitivity, 1 W / 1 m | 86.8 dB calc. |
Mounting dimensions
| Cutout diameter | 13 13/16″ |
|---|---|
| Mounting depth | 12″ |
| Overall diameter | 15 1/2″ |
Cone area (Sd) calculated from Fs, Vas and Mms: 116.3 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
- web.archive.org/web/20190808023357/http://sundownaudio.com/index.php/products/di
- web.archive.org/web/20190807024731/http://sundownaudio.com/index.php/subwoofers/
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 NSv2-15 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
Similar 15″ subwoofers from other brands
Close in Fs, Qts and Vas — a box of similar volume will suit them.
- DL Audio Phoenix Sport 15 (1+1) 1.27 ft³ sealed · 3.67 ft³ ported
- AMPIRE BLACK15.1 1.45 ft³ sealed · 4.06 ft³ ported
- Edge EDB15D2X-E7 1.11 ft³ sealed · 3.46 ft³ ported
- Hifonics ZRX15D2 1.13 ft³ sealed · 3.71 ft³ ported
- Pride BB.3 15 D2 1.13 ft³ sealed · 3.64 ft³ ported
- Pride MT 15 D2 1.13 ft³ sealed · 3.64 ft³ ported
FAQ
What box does the Sundown Audio Zv4-15 D1 need?
Recommended net volume: 1.64 ft³ sealed, 3.46 ft³ ported tuned to 30 Hz — for one sub in a sedan at 1,750 W. Fit the box to your space and amp in the free calculator, with plans and a cut sheet.
What are the Sundown Audio Zv4-15 D1 Thiele/Small specs?
Fs 24.8 Hz, Qts 0.37, Vas 2.78 ft³, Xmax 1.38″, Sd 116.3 in².
What is the Sundown Audio Zv4-15 D1 mounting depth?
Mounting depth is 12″, cutout diameter 13 13/16″. The inside depth of the box must exceed the mounting depth by at least 1″.
How much power does the Sundown Audio Zv4-15 D1 handle and how do I wire it?
RMS power rating: 1,750 W. Dual 1 Ω voice coils: series gives 2 Ω, parallel gives 0.5 Ω at the amp. Wiring for several subs and amp power — in the wiring calculator.