ACV SW PRO151D
15″ subwoofer · dual 1 Ω · 500 W RMS
Fs 25 HzQts 0.45Vas 2.65 ft³Xmax 0.75″
The published specs don’t add up:
- Fs, Vas and Sd don't match the moving mass of 261 g (they give 490 g) — one of the spec sheet values is probably wrong.
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
| Net volume | 1.24 ft³ (35 L) |
|---|---|
| Qtc | 0.80 |
| Fc | 44 Hz |
| F3 (−3 dB, no cabin gain) | 42 Hz |
| Example box (outside) | 16 15/16″ × 16 15/16″ × 11 9/16″ |
Ported
| Net volume | 4.03 ft³ (114 L) |
|---|---|
| Tuning (Fb) | 25 Hz |
| Port | slot 1 15/16 × 16 5/16″, 29 7/16″ long |
| Port velocity at 500 W | 65 ft/s |
| F3 (−3 dB, no cabin gain) | 23 Hz |
| Example box (outside) | 31 1/2″ × 17 11/16″ × 18 3/4″ |
Thiele/Small parameters
| Fs | 25 Hz |
|---|---|
| Qts | 0.45 |
| Qes | 0.5 |
| Qms | 4.5 |
| Vas | 2.65 ft³ |
| Re (one coil) | 1 Ω |
| Sd | ≈ 124 in² |
| Xmax | 0.75″ |
| EBP | 50 — sealed or ported calc. |
| Sensitivity, 1 W / 1 m | 85.7 dB calc. |
General
| Size | 15″ |
|---|---|
| Voice coils | dual 1 Ω |
| RMS power | 500 W |
Mounting dimensions
| Cutout diameter | 13 7/8″ |
|---|---|
| Mounting depth | 7 3/16″ |
| Overall diameter | 15 7/16″ |
“≈” 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.