VM Audio ECW150
15″ subwoofer · dual 4 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 | 2 of 4 — missing: frame outer diameter, 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) | Dry and tight · 0.57 |
|---|---|
| Fc | 50 Hz |
| F3 (−3 dB, no cabin gain) | 68 Hz |
| Example box (outside) | 16 15/16″ × 16 15/16″ × 11 7/16″ |
Ported
deeper, louder| Tuning (Fb) | 30 Hz |
|---|---|
| Port | slot 4 5/16 × 16 5/16″, 51 13/16″ long |
| Port velocity at 2,000 W | 63 ft/s |
| F3 (−3 dB, no cabin gain) | 28 Hz |
| Example box (outside) | 31 1/2″ × 17 11/16″ × 22 15/16″ |
Deeper: 2.30 ft³ (65 L) tuned to 31 Hz, 31 1/2″ × 17 11/16″ × 15 1/2″ 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 | 2,000 W |
| Fs | 25 Hz |
| Qts | 0.28 |
| Qes | 0.31 |
| Qms | 3.4 |
| Vas | 3.67 ft³ |
| Re (one coil) | 3.6 Ω |
|---|---|
| Sd | 119.8 in² |
| Xmax | ≈ 0.39″ |
| Mms | 330 g calc. |
| BL | 24.5 T·m calc. |
| EBP | 81 — sealed or ported calc. |
| Sensitivity, 1 W / 1 m | 89.2 dB calc. |
Mounting dimensions
| Cutout diameter | 13 11/16″ |
|---|---|
| Mounting depth | 9″ |
Cone area (Sd) calculated from Fs, Vas and Mms: 119.8 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
Other VM Audio 15″ models
- VM Audio EXW15 15″ · dual 4 Ω
Similar 15″ subwoofers from other brands
Close in Fs, Qts and Vas — a box of similar volume will suit them.
- Pride S V.3 15 D1 1.59 ft³ sealed · 4.17 ft³ ported
- Pride S V.3 15 D2 1.59 ft³ sealed · 4.17 ft³ ported
- Cerwin-Vega Mobile ST154D (Stroker 15" DVC 4ohm) 1.36 ft³ sealed · 2.01 ft³ ported
- Cerwin-Vega Mobile ST152D (Stroker 15" DVC 2ohm) 1.36 ft³ sealed · 2.01 ft³ ported
- Kicker CompVX 15" 2-Ohm DVC (50CVX152) 1.20 ft³ sealed · 3.88 ft³ ported
- Earthquake Subzero 15 1.31 ft³ sealed · 4.10 ft³ ported
FAQ
What box does the VM Audio ECW150 need?
Recommended net volume: 1.22 ft³ sealed, 3.57 ft³ ported tuned to 30 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 VM Audio ECW150 Thiele/Small specs?
Fs 25 Hz, Qts 0.28, Vas 3.67 ft³, Sd 119.8 in².
What is the VM Audio ECW150 mounting depth?
Mounting depth is 9″, cutout diameter 13 11/16″. The inside depth of the box must exceed the mounting depth by at least 1″.
How much power does the VM Audio ECW150 handle and how do I wire it?
RMS power rating: 2,000 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.