Sundown Audio Zv5-15 D1
15″ subwoofer · dual 1 Ω · 2,000 W RMS
The Sundown Audio Zv5-15 D1 is a 15″ subwoofer. With Qts 0.43 and EBP 58 it works both sealed and ported: sealed is tighter and smaller, ported is deeper and louder. Long excursion (Xmax 1.38″) — built for loud music and high power.
| 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, 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 · 0.66 |
|---|---|
| Fc | 43 Hz |
| F3 (−3 dB, no cabin gain) | 48 Hz |
| Example box (outside) | 16 15/16″ × 16 15/16″ × 14 7/8″ |
Ported
deeper, louder| Tuning (Fb) | 31 Hz |
|---|---|
| Port | slot 1 15/16 × 16 5/16″, 44 7/8″ long |
| Port velocity at 2,000 W | 83 ft/s |
| F3 (−3 dB, no cabin gain) | 31 Hz |
| Example box (outside) | 31 1/2″ × 17 11/16″ × 12 3/16″ |
At 2,000 W this example’s port will be noisy: air speed 83 ft/s, while the limit is 82 ft/s. It stays quiet up to about 1,900 W. Full power needs a port of at least 32.6 in², which means a bigger box than this example — size it in the designer.
The volume and tuning are the recommendation, but the port doesn’t fit this example box. Size the box and port in the designer.
Open ported box in designerDeeper: 3.07 ft³ (87 L) tuned to 28 Hz, 31 1/2″ × 17 11/16″ × 20 3/4″ 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 | 2,000 W |
| Fs | 28.3 Hz |
| Qts | 0.43 |
| Qes | 0.49 |
| Qms | 3.81 |
| Vas | 2.26 ft³ |
| Re (one coil) | 1 Ω |
|---|---|
| Sd | 112.8 in² |
| Xmax | 1.38″ |
| Vd | 155.4 in³ calc. |
| Mms | 371 g calc. |
| BL | 11.6 T·m calc. |
| EBP | 58 — sealed or ported calc. |
| Sensitivity, 1 W / 1 m | 86.7 dB calc. |
Mounting dimensions
| Cutout diameter | 13 13/16″ |
|---|---|
| Mounting depth | 12 7/16″ |
| Overall diameter | 15 1/2″ |
Where it fits in a vehicle
Spots from our vehicle guides where the cutout, mounting depth and recommended box fit. The spot sizes are approximate — measure your own vehicle.
- Excursion — behind the third row sealed and ported box
Cone area (Sd) calculated from Fs, Vas and Mms: 112.8 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/20191212173853/https://sundownaudio.com/index.php/subwoofers
- web.archive.org/web/20210121202119/https://sundownaudio.com/lv/sa/subwoofers/z-s
Voice coil versions
The same sub with different voice coils: the parameters are nearly the same — pick by your amp and wiring.
| Model | Voice coils | Re | Qes | Vas | Sealed | Ported |
|---|---|---|---|---|---|---|
| Sundown Audio Zv5-15 D1 | dual 1 Ω | 1 Ω | 0.49 | 2.26 ft³ | 1.70 ft³ | 1.80 ft³ · 31 Hz |
| Sundown Audio Zv5-15 D2 | dual 2 Ω | 2 Ω | 0.5 | 2.37 ft³ | 1.70 ft³ | 1.91 ft³ · 30 Hz |
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.
- Sky High Car Audio FXXL-15 D2 1.48 ft³ sealed · 2.05 ft³ ported
- Deaf Bonce Apocalypse DB-4.5K 15" D1 1.13 ft³ sealed · 1.98 ft³ ported
- Deaf Bonce Apocalypse DB-375 D1 1.82 ft³ sealed · 1.98 ft³ ported
- Magnum MXW 15-22DC 1.13 ft³ sealed · 1.98 ft³ ported
- Deaf Bonce Apocalypse DB-SA275 D1 1.13 ft³ sealed · 1.98 ft³ ported
- Swat GLK-P15D1 1.13 ft³ sealed · 1.98 ft³ ported
FAQ
What box does the Sundown Audio Zv5-15 D1 need?
Recommended net volume: 1.70 ft³ sealed, 1.80 ft³ ported tuned to 31 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 Zv5-15 D1 Thiele/Small specs?
Fs 28.3 Hz, Qts 0.43, Vas 2.26 ft³, Xmax 1.38″, Sd 112.8 in².
What is the Sundown Audio Zv5-15 D1 mounting depth?
Mounting depth is 12 7/16″, 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 Zv5-15 D1 handle and how do I wire it?
RMS power rating: 2,000 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.
Is the Sundown Audio Zv5-15 D1 better sealed or ported?
EBP 58: both work — sealed 1.70 ft³ is tighter and smaller, ported 1.80 ft³ tuned to 31 Hz is deeper and louder.
What port does the Sundown Audio Zv5-15 D1 need?
For the 1.80 ft³ ported box tuned to 31 Hz: slot 1 15/16 × 16 5/16″, 44 7/8″ long, area 32.1 in²; or a round port Ø6 3/8″, ≈ 44 7/8″ long. Port air speed at 2,000 W: 83 ft/s.
What box do two Sundown Audio Zv5-15 D1 subs need?
Two subs need twice the volume: 3.39 ft³ sealed, or 3.60 ft³ ported at the same 31 Hz tuning with twice the port area. One shared chamber or one per sub — whatever fits your vehicle.