Ciare 6.38MR3
Best box: 1.9 L bass reflex tuned to 138.5 Hz · F3 399.7 Hz
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Comparable 6.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Ciare 6.38MR3 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
- The textbook alignment (1.5 L at 230.8 Hz) would need a 3.8 cm port; the recommendation is retuned to 1.9 L at 138.5 Hz so the port can be built.
- Limited linear excursion (Xmax: 0.25 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) | 1.9 Liters |
| Tuning Frequency (Fb) | 138.5 Hz |
| F3 (-3 dB Cutoff) | 399.7 Hz |
| F6 / F10 Extension | 137.7 Hz / 116.4 Hz |
| Port Inner Diameter | Ø 5.0 cm |
| Port Physical Length | 12.6 cm |
| First Pipe Resonance | 1368.0 Hz |
| Estimated MOL @ F3 | 105.1 dB SPL |
Recommended Sealed (Acoustic Suspension)
MAX TRANSIENT DAMPING| Net Box Volume (Vb) | 0.5 Liters |
| System Q (Qtc) | 0.707 (Butterworth) |
| System Resonance (Fc) | 410.0 Hz |
| F3 (-3 dB Cutoff) | 461.1 Hz |
| F6 / F10 Extension | 332.7 Hz / 241.2 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 230.0 Hz |
| Total Q (Qts) | 0.38 |
| Electrical Q (Qes) | 0.529 |
| Mechanical Q (Qms) | 1.35 |
| Equivalent Volume (Vas) | 1.2 Liters |
| Diaphragm Area (Sd) | 108.1 cm² |
| DC Resistance (Re) | 5.21 Ω |
| Efficiency Bandwidth Product (EBP) | 434.9 |
| Linear Excursion (Xmax) | 0.2 mm |
| Thermal Power (Pe) | N/A 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 Ciare 6.38MR3?
Load Forge's calculated alignment puts Ciare 6.38MR3 in a 1.9 liter vented enclosure tuned to 138.5 Hz, reaching an F3 cutoff of approximately 399.7 Hz.
Can Ciare 6.38MR3 be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 0.5 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 461.1 Hz.
What port dimensions should be used for Ciare 6.38MR3 to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 5.0 cm with a length of 12.6 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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