SICA 5 H 1 CS - 8
Best box: 7.6 L bass reflex tuned to 62.3 Hz · F3 58.3 Hz
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Comparable 5.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the SICA 5 H 1 CS - 8 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
- Limited linear excursion (Xmax: 3.5 mm); set a high-pass subsonic filter at 25–30 Hz when driven with high power.
Recommended Bass Reflex (Vented)
PORT BUILDABLE| Net Box Volume (Vb) | 7.6 Liters |
| Tuning Frequency (Fb) | 62.3 Hz |
| F3 (-3 dB Cutoff) | 58.3 Hz |
| F6 / F10 Extension | 52.4 Hz / 46.6 Hz |
| Port Inner Diameter | Ø 5.0 cm |
| Port Physical Length | 16.4 cm |
| First Pipe Resonance | 1050.0 Hz |
| Estimated MOL @ F3 | 102.5 dB SPL |
Recommended Sealed (Acoustic Suspension)
MAX TRANSIENT DAMPING| Net Box Volume (Vb) | 3.3 Liters |
| System Q (Qtc) | 0.707 (Butterworth) |
| System Resonance (Fc) | 112.0 Hz |
| F3 (-3 dB Cutoff) | 112.2 Hz |
| F6 / F10 Extension | 84.9 Hz / 64.0 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 68.0 Hz |
| Total Q (Qts) | 0.42 |
| Electrical Q (Qes) | 0.447 |
| Mechanical Q (Qms) | 6.84 |
| Equivalent Volume (Vas) | 6.1 Liters |
| Diaphragm Area (Sd) | 78.5 cm² |
| DC Resistance (Re) | 6.12 Ω |
| Efficiency Bandwidth Product (EBP) | 152.0 |
| Linear Excursion (Xmax) | 3.5 mm |
| Thermal Power (Pe) | 60.0 W |
| Nominal Diameter | 5.0" |
| Catalog Source | Load Forge catalog (manufacturer datasheets and retailer listings) |
Frequently Asked Questions
What is the recommended ported (bass reflex) box volume for SICA 5 H 1 CS - 8?
Load Forge's calculated alignment puts SICA 5 H 1 CS - 8 in a 7.6 liter vented enclosure tuned to 62.3 Hz, reaching an F3 cutoff of approximately 58.3 Hz.
Can SICA 5 H 1 CS - 8 be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 3.3 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 112.2 Hz.
What port dimensions should be used for SICA 5 H 1 CS - 8 to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 5.0 cm with a length of 16.4 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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