SICA 8 S 2,5 CP - 8
Best box: 11.6 L bass reflex tuned to 61.5 Hz · F3 62.2 Hz
Open and tweak this box live ↗
Will it fit your requirements?
Check the SICA 8 S 2,5 CP - 8 against your space and targets — instant, no sign-up.
Estimated retail 108.70 EUR · Check price & availability ↗
Free, no sign-up to simulate · a free account saves your design
Comparable 8.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the SICA 8 S 2,5 CP - 8 does not fit your target box volume or tuning. Each entry links to its full enclosure design and Thiele/Small parameters.
Recommended Bass Reflex (Vented)
PORT BUILDABLE| Net Box Volume (Vb) | 11.6 Liters |
| Tuning Frequency (Fb) | 61.5 Hz |
| F3 (-3 dB Cutoff) | 62.2 Hz |
| F6 / F10 Extension | 54.6 Hz / 47.7 Hz |
| Port Inner Diameter | Ø 6.8 cm |
| Port Physical Length | 19.9 cm |
| First Pipe Resonance | 862.0 Hz |
| Estimated MOL @ F3 | 112.0 dB SPL |
Recommended Sealed (Acoustic Suspension)
MAX TRANSIENT DAMPING| Net Box Volume (Vb) | 5.2 Liters |
| System Q (Qtc) | 0.707 (Butterworth) |
| System Resonance (Fc) | 112.8 Hz |
| F3 (-3 dB Cutoff) | 110.0 Hz |
| F6 / F10 Extension | 83.9 Hz / 63.5 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 54.0 Hz |
| Total Q (Qts) | 0.33 |
| Electrical Q (Qes) | 0.365 |
| Mechanical Q (Qms) | 3.44 |
| Equivalent Volume (Vas) | 18.6 Liters |
| Diaphragm Area (Sd) | 213.8 cm² |
| DC Resistance (Re) | 5.1 Ω |
| Efficiency Bandwidth Product (EBP) | 147.9 |
| Linear Excursion (Xmax) | 5.0 mm |
| Thermal Power (Pe) | 300.0 W |
| Nominal Diameter | 8.0" |
| Catalog Source | Load Forge catalog (manufacturer datasheets and retailer listings) |
Frequently Asked Questions
What is the recommended ported (bass reflex) box volume for SICA 8 S 2,5 CP - 8?
Load Forge's calculated alignment puts SICA 8 S 2,5 CP - 8 in a 11.6 liter vented enclosure tuned to 61.5 Hz, reaching an F3 cutoff of approximately 62.2 Hz.
Can SICA 8 S 2,5 CP - 8 be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 5.2 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 110.0 Hz.
What port dimensions should be used for SICA 8 S 2,5 CP - 8 to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 6.8 cm with a length of 19.9 cm is suggested; check the port air velocity at your drive level in the Load Forge Studio.
Shareable Acoustic Card for Forums & Social Media
Embed this design card on DIYAudio, AVSForum, Reddit, or Facebook. It shows the calculated F3, MOL (when the power rating is published) and box parameters.
Not sure if 8 S 2,5 CP - 8 fits your physical space?
Don't force a driver into the wrong box. Use Bass Match to calculate which of 8,000+ catalog drivers delivers the highest SPL, lowest F3, and cleanest port air velocity for your exact trunk or room dimensions.
Run Bass Match for Your Space