Rockford Fosgate T2S2-16
Best box: 135.1 L bass reflex tuned to 25.0 Hz · F3 23.3 Hz
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Comparable 16.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Rockford Fosgate T2S2-16 does not fit your target box volume or tuning. Each entry links to its full enclosure design and Thiele/Small parameters.
⚠️ Engineering Notice for Builders
- The textbook alignment (135.1 L at 22.7 Hz) would need a 121.0 cm port; the recommendation is retuned to 135.1 L at 25.0 Hz so the port can be built.
- Port length (99.3 cm) exceeds a straight internal run; use an elbow bend, slotted vent or 3D folded duct to fit the enclosure.
- Large enclosure volume (135.1 L) requires extensive internal matrix bracing to prevent panel resonance.
Recommended Bass Reflex (Vented)
PORT NEEDS ELBOW / 3D| Net Box Volume (Vb) | 135.1 Liters |
| Tuning Frequency (Fb) | 25.0 Hz |
| F3 (-3 dB Cutoff) | 23.3 Hz |
| F6 / F10 Extension | 20.8 Hz / 18.5 Hz |
| Port Inner Diameter | Ø 20.2 cm |
| Port Physical Length | 99.3 cm |
| First Pipe Resonance | 173.0 Hz |
| Estimated MOL @ F3 | 118.9 dB SPL |
Recommended Sealed (Acoustic Suspension)
MAX TRANSIENT DAMPING| Net Box Volume (Vb) | 83.3 Liters |
| System Q (Qtc) | 0.707 (Butterworth) |
| System Resonance (Fc) | 40.5 Hz |
| F3 (-3 dB Cutoff) | 41.4 Hz |
| F6 / F10 Extension | 31.2 Hz / 23.5 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 28.5 Hz |
| Total Q (Qts) | 0.49 |
| Electrical Q (Qes) | 0.563 |
| Mechanical Q (Qms) | 3.76 |
| Equivalent Volume (Vas) | 90.1 Liters |
| Diaphragm Area (Sd) | 1034.0 cm² |
| DC Resistance (Re) | 1.6 Ω |
| Efficiency Bandwidth Product (EBP) | 50.6 |
| Linear Excursion (Xmax) | 34.0 mm |
| Thermal Power (Pe) | 2500.0 W |
| Nominal Diameter | 16.0" |
| Catalog Source | Load Forge catalog (manufacturer datasheets and retailer listings) |
Frequently Asked Questions
What is the recommended ported (bass reflex) box volume for Rockford Fosgate T2S2-16?
Load Forge's calculated alignment puts Rockford Fosgate T2S2-16 in a 135.1 liter vented enclosure tuned to 25.0 Hz, reaching an F3 cutoff of approximately 23.3 Hz.
Can Rockford Fosgate T2S2-16 be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 83.3 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 41.4 Hz.
What port dimensions should be used for Rockford Fosgate T2S2-16 to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 20.2 cm with a length of 99.3 cm is suggested; check the port air velocity at your drive level in the Load Forge Studio.
Shareable Acoustic Card for Forums & Social Media
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