Soundstream VGW-12
12″ subwoofer · dual 4 Ω · 600 W RMS
| Source | web.archive.org · manufacturer data |
|---|---|
| Checked against source | October 2026 |
| Thiele/Small parameters | not in the spec sheet: Re, Sd — typical value for the size used |
| Mounting dimensions | 0 of 4 — missing: cutout, mounting depth, frame outer diameter, magnet diameter; the designer will use an estimate |
Recommended box
For a sedan, one sub, 600 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 · 0.80 |
|---|---|
| Fc | 52 Hz |
| F3 (−3 dB, no cabin gain) | 49 Hz |
| Example box (outside) | 14 3/16″ × 14 3/16″ × 11 3/16″ |
Ported
deeper, louder| Tuning (Fb) | 32 Hz |
|---|---|
| Port | slot 1 9/16 × 14 5/16″, 36 3/4″ long |
| Port velocity at 600 W | 60 ft/s |
| F3 (−3 dB, no cabin gain) | 32 Hz |
| Example box (outside) | 31 1/2″ × 15 3/4″ × 10 5/16″ |
Deeper: 2.68 ft³ (76 L) tuned to 28 Hz, 31 1/2″ × 15 3/4″ × 15 13/16″ 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 | 12″ |
|---|---|
| Voice coils | dual 4 Ω |
| RMS power | 600 W |
| Fs | 29 Hz |
| Qts | 0.45 |
| Qes | 0.474 |
| Qms | 8.03 |
| Vas | 1.81 ft³ |
|---|---|
| Re (one coil) | ≈ 3.4 Ω |
| Sd | ≈ 76 in² |
| Xmax | 0.65″ |
| EBP | 61 — sealed or ported calc. |
| Sensitivity, 1 W / 1 m | 86.2 dB calc. |
Mounting dimensions
| Cutout diameter | ≈ 11 1/8″ |
|---|---|
| Mounting depth | ≈ 5 7/8″ |
“≈” 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 Soundstream 12″ models
- Soundstream EXACT 12 12″ · 4 Ω
- Soundstream PCW-12 12″ · dual 4 Ω
- Soundstream PSW.124 12″ · 4 Ω
- Soundstream PWS-12 12″ · dual 4 Ω
- Soundstream PXW-12 12″ · dual 4 Ω
- Soundstream PXW-12/2 12″ · dual 2 Ω
- Soundstream R1-12 12″ · dual 4 Ω
- Soundstream R1-12L 12″ · dual 4 Ω
- Soundstream R3.12 12″ · dual 2 Ω
- Soundstream RBW-12 12″ · dual 4 Ω
- Soundstream RFW-12 12″ · dual 4 Ω
- Soundstream RW-12 12″ · dual 4 Ω
Similar 12″ subwoofers from other brands
Close in Fs, Qts and Vas — a box of similar volume will suit them.
- Focal K2 Power E30KX (DVC 4 ohm, predecessor of SUB 30 KXE) 0.85 ft³ sealed · 1.41 ft³ ported
- Focal K2 Power SUB 30 KXE (DVC 4+4 ohm) 0.85 ft³ sealed · 1.41 ft³ ported
- Alpine S2-W12D4 0.78 ft³ sealed · 1.45 ft³ ported
- JBL S3-1224 / Stadium 1224 (SSI 4 ohm) 0.99 ft³ sealed · 1.48 ft³ ported
- Ground Zero GZRW 12D2 (2x2 Ohm) 0.71 ft³ sealed · 1.41 ft³ ported
- Pride Junior 12 D2 0.74 ft³ sealed · 1.45 ft³ ported
FAQ
What box does the Soundstream VGW-12 need?
Recommended net volume: 0.81 ft³ sealed, 1.45 ft³ ported tuned to 32 Hz — for one sub in a sedan at 600 W. Fit the box to your space and amp in the free calculator, with plans and a cut sheet.
What are the Soundstream VGW-12 Thiele/Small specs?
Fs 29 Hz, Qts 0.45, Vas 1.81 ft³, Xmax 0.65″.
How much power does the Soundstream VGW-12 handle and how do I wire it?
RMS power rating: 600 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.