Passive Radiator / Folded Port

SICA 10 S 3 CP

Best box: 9.4 L sealed · Fc 96.2 Hz · F3 95.8 Hz

Predicted SPL response of the SICA 10 S 3 CP in the recommended 9.4 L sealed box versus the alternative — open it in the simulator Open and tweak this box live ↗

Will it fit your requirements?

Check the SICA 10 S 3 CP against your space and targets — instant, no sign-up.

Design a box for this driver Box Design with the 10 S 3 CP and its T/S already loaded Find alternatives Bass Match ranks similar drivers against the 10 S 3 CP in the same box

Estimated retail 173.40 EUR · Check price & availability ↗

Free, no sign-up to simulate · a free account saves your design

⚠️ Engineering Notice for Builders

  • Straight vent would be 930.0 cm long: not physically buildable as a simple tube. Use a passive radiator, a folded slot port or model a 3D folded duct in Load Forge Studio.

Textbook Bass Reflex — not recommended

PORT NOT BUILDABLE
Net Box Volume (Vb) 20.3 Liters
Tuning Frequency (Fb) 52.1 Hz
F3 (-3 dB Cutoff) 54.7 Hz
F6 / F10 Extension 47.6 Hz / 41.3 Hz
Port Inner Diameter Ø 47.5 cm
Port Physical Length 930.0 cm
First Pipe Resonance 18.0 Hz
Estimated MOL @ F3 114.7 dB SPL
⚠️ Port feasibility: a straight tube would need 930.0 cm and cannot fit in a practical cabinet, and no nearby retune stays buildable without a bass hump. Prefer the sealed alignment, a passive radiator, or a 3D folded duct in Load Forge Studio.
Simulate This Reflex Box in App →

Recommended Sealed (Acoustic Suspension)

MAX TRANSIENT DAMPING
Net Box Volume (Vb) 9.4 Liters
System Q (Qtc) 0.707 (Butterworth)
System Resonance (Fc) 96.2 Hz
F3 (-3 dB Cutoff) 95.8 Hz
F6 / F10 Extension 72.6 Hz / 54.8 Hz
Air Spring Linearity High (Zero port compression)
Simulate This Sealed Box in App →

Thiele/Small Parameters

Resonance (Fs) 42.0 Hz
Total Q (Qts) 0.3
Electrical Q (Qes) 0.32
Mechanical Q (Qms) 4.83
Equivalent Volume (Vas) 42.8 Liters
Diaphragm Area (Sd) 346.4 cm²
DC Resistance (Re) 5.1 Ω
Efficiency Bandwidth Product (EBP) 131.3
Linear Excursion (Xmax) 269.0 mm
Thermal Power (Pe) 450.0 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 SICA 10 S 3 CP?

A simple ported box is not recommended for SICA 10 S 3 CP: the textbook alignment (20.3 liters tuned to 52.1 Hz) needs a 930.0 cm port, and no nearby retune stays buildable without a bass hump. A sealed box, a passive radiator or a folded duct is the practical choice.

Can SICA 10 S 3 CP be used in a sealed box?

Yes. In a sealed (acoustic suspension) enclosure of 9.4 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 95.8 Hz.

What port dimensions should be used for SICA 10 S 3 CP to avoid port chuffing?

A straight 47.5 cm port would need 930.0 cm of length, which does not fit a practical cabinet. Use a passive radiator or a folded/3D duct instead of a straight tube.

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.

SICA 10 S 3 CP Enclosure Card
Download SVG Card 📥

Not sure if 10 S 3 CP 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