Rockford Fosgate Power T2S1-13
13″ subwoofer · 1 Ω · 2,000 W RMS
Fs 25 HzQts 0.34Vas 2.45 ft³Xmax 1.34″
The published specs don’t add up:
- Sd of 109.6 in² is unusual for a 13″ (typically 74.4–100.8 in²).
- The published Xmax 1.34″ looks like max (mechanical) excursion, not linear: the excursion-limited power will read too high.
Recommended box
For a sedan, one sub, 2,000 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 | 1.02 ft³ (29 L) |
|---|---|
| Qtc | 0.63 |
| Fc | 46 Hz |
| F3 (−3 dB, no cabin gain) | 55 Hz |
| Example box (outside) | 15 3/8″ × 15 3/8″ × 12 1/8″ |
Ported
| Net volume | 2.08 ft³ (59 L) |
|---|---|
| Tuning (Fb) | 28 Hz |
| Port | slot 2 3/16 × 14 3/4″, 47 1/2″ long |
| Port velocity at 2,000 W | 95 ft/s |
| F3 (−3 dB, no cabin gain) | 27 Hz |
| Example box (outside) | 31 1/2″ × 16 1/8″ × 14 9/16″ |
Thiele/Small parameters
| Fs | 25 Hz |
|---|---|
| Qts | 0.34 |
| Qes | 0.39 |
| Qms | 2.93 |
| Vas | 2.45 ft³ |
| Re | 0.9 Ω |
| Sd | 109.6 in² |
| Xmax | 1.34″ |
| Vd | 146.7 in³ calc. |
| Mms | 414 g calc. |
| BL | 12.3 T·m calc. |
| EBP | 64 — sealed or ported calc. |
| Sensitivity, 1 W / 1 m | 86.4 dB calc. |
General
| Size | 13″ |
|---|---|
| Voice coils | 1 Ω |
| RMS power | 2,000 W |
Mounting dimensions
| Cutout diameter | 12 5/16″ |
|---|---|
| Mounting depth | 9 11/16″ |
“≈” 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.
Data sources
Other Rockford Fosgate 13″ models
- Rockford Fosgate Power T2S2-13 13″ · 2 Ω