PSI Platform 1 12 D2
12″ subwoofer · dual 2 Ω · 600 W RMS
Fs 29.7 HzQts 0.60Vas 1.43 ft³Xmax 1.10″
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
| Net volume | 1.73 ft³ (49 L) |
|---|---|
| Qtc | 0.81 |
| Fc | 40 Hz |
| F3 (−3 dB, no cabin gain) | 37 Hz |
| Example box (outside) | 14 3/16″ × 14 3/16″ × 20 15/16″ |
Ported
| Net volume | 2.93 ft³ (83 L) |
|---|---|
| Tuning (Fb) | 27 Hz |
| Port | slot 2 3/16 × 14 5/16″, 34 3/16″ long |
| Port velocity at 600 W | 64 ft/s |
| F3 (−3 dB, no cabin gain) | 24 Hz |
| Example box (outside) | 31 1/2″ × 15 3/4″ × 16 3/4″ |
Thiele/Small parameters
| Fs | 29.7 Hz |
|---|---|
| Qts | 0.60 |
| Qes | 0.67 |
| Qms | 5.99 |
| Vas | 1.43 ft³ |
| Re (one coil) | 1.95 Ω |
| Sd | 76 in² |
| Xmax | 1.10″ |
| Vd | 83.7 in³ calc. |
| Mms | 242 g calc. |
| BL | 11.5 T·m calc. |
| EBP | 44 — suits sealed calc. |
| Sensitivity, 1 W / 1 m | 84 dB calc. |
General
| Size | 12″ |
|---|---|
| Voice coils | dual 2 Ω |
| RMS power | 600 W |
Mounting dimensions
| Cutout diameter | 11 1/8″ |
|---|---|
| Mounting depth | 6 1/2″ |
| Overall diameter | 12 1/2″ |
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
Other PSI 12″ models
- PSI Platform 2 12 D2 12″ · dual 2 Ω
- PSI Platform 3 12 12″ · DVC