PowerBass 3XL-1210D
12″ subwoofer · dual 1 Ω · 1,000 W RMS
Fs 35.5 HzQts 0.58Vas 0.92 ft³Xmax 0.75″
Recommended box
For a sedan, one sub, 1,000 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
| Net volume | 0.99 ft³ (28 L) |
|---|---|
| Qtc | 0.80 |
| Fc | 49 Hz |
| F3 (−3 dB, no cabin gain) | 46 Hz |
| Example box (outside) | 14 3/16″ × 14 3/16″ × 13 1/16″ |
Ported
| Net volume | 2.83 ft³ (80 L) |
|---|---|
| Tuning (Fb) | 27 Hz |
| Port | slot 2 15/16 × 14 5/16″, 49 9/16″ long |
| Port velocity at 1,000 W | 64 ft/s |
| F3 (−3 dB, no cabin gain) | 24 Hz |
| Example box (outside) | 31 1/2″ × 15 3/4″ × 18 15/16″ |
Thiele/Small parameters
| Fs | 35.5 Hz |
|---|---|
| Qts | 0.58 |
| Qes | 0.639 |
| Qms | 5.93 |
| Vas | 0.92 ft³ |
| Re (one coil) | 0.92 Ω |
| Sd | 82.3 in² |
| Xmax | 0.75″ |
| Vd | 61.6 in³ calc. |
| Mms | 309 g calc. |
| BL | 10 T·m calc. |
| EBP | 56 — sealed or ported calc. |
| Sensitivity, 1 W / 1 m | 84.6 dB calc. |
General
| Size | 12″ |
|---|---|
| Voice coils | dual 1 Ω |
| RMS power | 1,000 W |
Mounting dimensions
| Cutout diameter | 11 1/8″ |
|---|---|
| Mounting depth | 9 1/8″ |
Judging by its value, the published Re is for both coils in series — converted to per coil.
“≈” 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
- powerbassusa.com/us/en/products/mobile-audio/3xl-1210d-12-subwoofer/
- powerbassusa.com/media/uploads_file/2025/05/14/a6824e482a19767.16088632.pdf
Other PowerBass 12″ models
- PowerBass 3XL-1201D 12″ · dual 1 Ω
- PowerBass L-1204D 12″ · dual 4 Ω
- PowerBass S-12T 12″ · 4 Ω
- PowerBass S-1204D 12″ · dual 4 Ω