Cerwin-Vega Mobile V84DV2 (Vega 8" DVC 4ohm)
8″ subwoofer · dual 4 Ω · 250 W RMS
Fs 34.1 HzQts 0.68Vas 0.52 ft³Xmax 0.53″
The published specs don’t add up:
- The spec sheet's Qts 0.597 doesn't match its Qes and Qms (they give 0.68).
Recommended box
For a sedan, one sub, 250 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
| Net volume | 0.71 ft³ (20 L) |
|---|---|
| Qtc | 0.90 |
| Fc | 45 Hz |
| F3 (−3 dB, no cabin gain) | 39 Hz |
| Example box (outside) | 10 1/4″ × 10 1/4″ × 17 7/8″ |
Ported
| Net volume | 1.20 ft³ (34 L) |
|---|---|
| Tuning (Fb) | 30 Hz |
| Port | round port Ø3″, 15 3/16″ long |
| Port velocity at 250 W | 125 ft/s |
| F3 (−3 dB, no cabin gain) | 26 Hz |
| Example box (outside) | 30 3/4″ × 15 3/4″ × 6 7/8″ |
Thiele/Small parameters
| Fs | 34.1 Hz |
|---|---|
| Qts | 0.68 |
| Qes | 0.76 |
| Qms | 6.8 |
| Vas | 0.52 ft³ |
| Re (one coil) | 4 Ω |
| Sd | 31 in² |
| Xmax | 0.53″ |
| Vd | 16.5 in³ calc. |
| Mms | 85 g calc. |
| BL | 9.8 T·m calc. |
| EBP | 45 — suits sealed calc. |
| Sensitivity, 1 W / 1 m | 80.8 dB calc. |
General
| Size | 8″ |
|---|---|
| Voice coils | dual 4 Ω |
| RMS power | 250 W |
Mounting dimensions
| Cutout diameter | 7 1/16″ |
|---|---|
| Mounting depth | 4 7/16″ |
| Overall diameter | 8 3/4″ |
“≈” 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
- cdn.shopify.com/s/files/1/0645/1711/1988/files/VEGAv2-Subs-Owner_s_Manual.pdf?v=
- cerwinvega.com/pages/download_manuals
Other Cerwin-Vega Mobile 8″ models
- Cerwin-Vega Mobile V82D (Vega 8" DVC 2ohm) 8″ · dual 2 Ω