SICA C 6 V
Best box: 5.6 L bass reflex tuned to 90.4 Hz · F3 136.6 Hz
Open and tweak this box live ↗
Will it fit your requirements?
Check the SICA C 6 V against your space and targets — instant, no sign-up.
Estimated retail 37.80 EUR · Check price & availability ↗
Free, no sign-up to simulate · a free account saves your design
Comparable 6.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the SICA C 6 V 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
- Xmax is not published, so the port size is an empirical estimate (area ≥ 12 in² per ft³ of net volume, minimum by driver size), not a displacement calculation. Check air velocity in Load Forge Studio.
Recommended Bass Reflex (Vented)
PORT BUILDABLE| Net Box Volume (Vb) | 5.6 Liters |
| Tuning Frequency (Fb) | 90.4 Hz |
| F3 (-3 dB Cutoff) | 136.6 Hz |
| F6 / F10 Extension | 118.8 Hz / 96.2 Hz |
| Port Inner Diameter ESTIMATED | Ø 5.0 cm |
| Port Physical Length | 9.3 cm |
| First Pipe Resonance | 1852.0 Hz |
| Estimated MOL @ F3 | 106.2 dB SPL |
Sealed (Acoustic Suspension) — compromise
SUITS INFINITE / OPEN BAFFLEWith Qts 1.08 a Butterworth (Qtc 0.707) box would be many times Vas. A box equal to Vas reaches Qtc 1.527; for a flat response this driver is better used on an infinite (IB) or open baffle.
| Net Box Volume (Vb) | 7.0 Liters |
| System Q (Qtc) | 1.527 (above Butterworth: Qtc cannot fall below Qts (1.08)) |
| System Resonance (Fc) | 150.3 Hz |
| F3 (-3 dB Cutoff) | 120.7 Hz |
| F6 / F10 Extension | 104.5 Hz / 87.1 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 106.3 Hz |
| Total Q (Qts) | 1.08 |
| Electrical Q (Qes) | 1.202 |
| Mechanical Q (Qms) | 10.65 |
| Equivalent Volume (Vas) | 7.0 Liters |
| Diaphragm Area (Sd) | 122.7 cm² |
| DC Resistance (Re) | 6.58 Ω |
| Efficiency Bandwidth Product (EBP) | 88.4 |
| Linear Excursion (Xmax) | N/A mm |
| Thermal Power (Pe) | 20.0 W |
| Nominal Diameter | 6.0" |
| Catalog Source | Load Forge catalog (manufacturer datasheets and retailer listings) |
Frequently Asked Questions
What is the recommended ported (bass reflex) box volume for SICA C 6 V?
Load Forge's calculated alignment puts SICA C 6 V in a 5.6 liter vented enclosure tuned to 90.4 Hz, reaching an F3 cutoff of approximately 136.6 Hz.
Can SICA C 6 V be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 7.0 liters with a Qtc of 1.527 (above Butterworth: Qtc cannot fall below Qts (1.08)), the system exhibits an F3 of 120.7 Hz.
What port dimensions should be used for SICA C 6 V to avoid port chuffing?
Xmax is not published for SICA C 6 V, so the port is an empirical estimate: a 5.0 cm diameter with a length of 9.3 cm (area at least 12 in² per ft³ of net volume). Check the air velocity at your power level in 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 C 6 V 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