Rockford Fosgate T1S1-10S
Best box: 24.6 L bass reflex tuned to 30.9 Hz · F3 30.3 Hz
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Comparable 10.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Rockford Fosgate T1S1-10S 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 (24.6 L at 23.8 Hz) would need a 161.8 cm port; the recommendation is retuned to 24.6 L at 30.9 Hz so the port can be built.
- Port length (93.1 cm) exceeds a straight internal run; use an elbow bend, slotted vent or 3D folded duct to fit the enclosure.
Recommended Bass Reflex (Vented)
PORT NEEDS ELBOW / 3D| Net Box Volume (Vb) | 24.6 Liters |
| Tuning Frequency (Fb) | 30.9 Hz |
| F3 (-3 dB Cutoff) | 30.3 Hz |
| F6 / F10 Extension | 26.3 Hz / 23.0 Hz |
| Port Inner Diameter | Ø 10.0 cm |
| Port Physical Length | 93.1 cm |
| First Pipe Resonance | 185.0 Hz |
| Estimated MOL @ F3 | 108.2 dB SPL |
Recommended Sealed (Acoustic Suspension)
MAX TRANSIENT DAMPING| Net Box Volume (Vb) | 42.2 Liters |
| System Q (Qtc) | 0.707 (Butterworth) |
| System Resonance (Fc) | 39.8 Hz |
| F3 (-3 dB Cutoff) | 40.3 Hz |
| F6 / F10 Extension | 30.5 Hz / 23.0 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 34.0 Hz |
| Total Q (Qts) | 0.6 |
| Electrical Q (Qes) | 0.656 |
| Mechanical Q (Qms) | 7.0 |
| Equivalent Volume (Vas) | 16.4 Liters |
| Diaphragm Area (Sd) | 356.0 cm² |
| DC Resistance (Re) | 0.88 Ω |
| Efficiency Bandwidth Product (EBP) | 51.8 |
| Linear Excursion (Xmax) | 15.0 mm |
| Thermal Power (Pe) | 500.0 W |
| Nominal Diameter | 10.0" |
| 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 T1S1-10S?
Load Forge's calculated alignment puts Rockford Fosgate T1S1-10S in a 24.6 liter vented enclosure tuned to 30.9 Hz, reaching an F3 cutoff of approximately 30.3 Hz.
Can Rockford Fosgate T1S1-10S be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 42.2 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 40.3 Hz.
What port dimensions should be used for Rockford Fosgate T1S1-10S to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 10.0 cm with a length of 93.1 cm is suggested; check the port air velocity at your drive level in the Load Forge Studio.
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