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SICA 10 D 1,5 CS - 8

Best box: 30.0 L bass reflex tuned to 57.8 Hz · F3 86.6 Hz

Predicted SPL response of the SICA 10 D 1,5 CS - 8 in the recommended 30.0 L bass reflex box versus the alternative — open it in the simulator Open and tweak this box live ↗

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⚠️ Engineering Notice for Builders

  • Limited linear excursion (Xmax: 2.5 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) 30.0 Liters
Tuning Frequency (Fb) 57.8 Hz
F3 (-3 dB Cutoff) 86.6 Hz
F6 / F10 Extension 75.6 Hz / 61.5 Hz
Port Inner Diameter Ø 5.0 cm
Port Physical Length 2.3 cm
First Pipe Resonance 7487.0 Hz
Estimated MOL @ F3 112.2 dB SPL
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Sealed (Acoustic Suspension) — compromise

SUITS INFINITE / OPEN BAFFLE

With Qts 1.12 a Butterworth (Qtc 0.707) box would be many times Vas. A box equal to Vas reaches Qtc 1.584; for a flat response this driver is better used on an infinite (IB) or open baffle.

Net Box Volume (Vb) 37.5 Liters
System Q (Qtc) 1.584 (above Butterworth: Qtc cannot fall below Qts (1.12))
System Resonance (Fc) 96.2 Hz
F3 (-3 dB Cutoff) 75.9 Hz
F6 / F10 Extension 65.9 Hz / 55.1 Hz
Air Spring Linearity High (Zero port compression)
Simulate This Sealed Box in App →

Thiele/Small Parameters

Resonance (Fs) 68.0 Hz
Total Q (Qts) 1.12
Electrical Q (Qes) 1.233
Mechanical Q (Qms) 12.27
Equivalent Volume (Vas) 37.5 Liters
Diaphragm Area (Sd) 330.1 cm²
DC Resistance (Re) 5.0 Ω
Efficiency Bandwidth Product (EBP) 55.2
Linear Excursion (Xmax) 2.5 mm
Thermal Power (Pe) 100.0 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 D 1,5 CS - 8?

Load Forge's calculated alignment puts SICA 10 D 1,5 CS - 8 in a 30.0 liter vented enclosure tuned to 57.8 Hz, reaching an F3 cutoff of approximately 86.6 Hz.

Can SICA 10 D 1,5 CS - 8 be used in a sealed box?

Yes. In a sealed (acoustic suspension) enclosure of 37.5 liters with a Qtc of 1.584 (above Butterworth: Qtc cannot fall below Qts (1.12)), the system exhibits an F3 of 75.9 Hz.

What port dimensions should be used for SICA 10 D 1,5 CS - 8 to avoid port chuffing?

Sized from cone displacement (Sd × Xmax), a minimum port diameter of 5.0 cm with a length of 2.3 cm is suggested; check the port air velocity at your drive level in the Load Forge Studio.

Shareable Acoustic Card for Forums & Social Media

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 D 1,5 CS - 8 Enclosure Card
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