Sundown Audio Ev2-15 D4
15″ subwoofer · dual 4 Ω · 500 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, 500 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) | Tight and punchy · 0.89 |
|---|---|
| Fc | 47 Hz |
| F3 (−3 dB, no cabin gain) | 41 Hz |
| Example box (outside) | 31 1/2″ × 17 11/16″ × 12 1/4″ |
Ported
deeper, louder| Tuning (Fb) | 33 Hz |
|---|---|
| Port | slot 1 3/4 × 16 5/16″, 15 5/8″ long |
| Port velocity at 500 W | 64 ft/s |
| F3 (−3 dB, no cabin gain) | 32 Hz |
| Example box (outside) | 31 1/2″ × 17 11/16″ × 15 11/16″ |
Deeper: 4.91 ft³ (139 L) tuned to 33 Hz, 31 1/2″ × 17 11/16″ × 20 11/16″ 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 4 Ω |
| RMS power | 500 W |
| Fs | 29.6 Hz |
| Qts | 0.56 |
| Qes | 0.617 |
| Qms | 6.22 |
| Vas | 4.40 ft³ |
| Re (one coil) | 2.9 Ω |
|---|---|
| Sd | 126.4 in² |
| Xmax | 0.55″ |
| Vd | 69.7 in³ calc. |
| Mms | 218 g calc. |
| BL | 13.8 T·m calc. |
| EBP | 48 — suits sealed calc. |
| Sensitivity, 1 W / 1 m | 89.2 dB calc. |
Mounting dimensions
| Cutout diameter | 13 7/8″ |
|---|---|
| Mounting depth | 7 1/4″ |
| Overall diameter | 15 1/8″ |
Cone area (Sd) calculated from Fs, Vas and Mms: 126.4 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/20190730000622/http://sundownaudio.com/index.php/subwoofers/
- web.archive.org/web/20211205100528/https://sundownaudio.com/lv/sa/discontinued/d
Other Sundown Audio 15″ models
- Sundown Audio Ev2-15 D2 15″ · dual 2 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
- 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.
- Hertz Hi-Energy HX 380 (SVC 4 ohm) 2.79 ft³ sealed · 3.50 ft³ ported
- Fi Audio X15 D2 2.86 ft³ sealed · 3.43 ft³ ported
- Fi Audio X15 D4 2.86 ft³ sealed · 3.43 ft³ ported
- Bomber Bicho Papão 800W 4+4 Ohm (SW15BP-800-4+4) 2.90 ft³ sealed · 3.74 ft³ ported
- PSI Platform 2 15 D2 2.93 ft³ sealed · 3.57 ft³ ported
- Gladen RS 15 FA Free-Air (SVC 4 ohm) 2.93 ft³ sealed · 3.81 ft³ ported
FAQ
What box does the Sundown Audio Ev2-15 D4 need?
Recommended net volume: 2.90 ft³ sealed, 3.53 ft³ ported tuned to 33 Hz — for one sub in a sedan at 500 W. Fit the box to your space and amp in the free calculator, with plans and a cut sheet.
What are the Sundown Audio Ev2-15 D4 Thiele/Small specs?
Fs 29.6 Hz, Qts 0.56, Vas 4.40 ft³, Xmax 0.55″, Sd 126.4 in².
What is the Sundown Audio Ev2-15 D4 mounting depth?
Mounting depth is 7 1/4″, cutout diameter 13 7/8″. The inside depth of the box must exceed the mounting depth by at least 1″.
How much power does the Sundown Audio Ev2-15 D4 handle and how do I wire it?
RMS power rating: 500 W. Dual 4 Ω voice coils: series gives 8 Ω, parallel gives 2 Ω at the amp. Wiring for several subs and amp power — in the wiring calculator.