Ciare NDK15-3-8
Best box: 72.5 L bass reflex tuned to 53.6 Hz · F3 54.2 Hz
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Comparable 15.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Ciare NDK15-3-8 does not fit your target box volume or tuning. Each entry links to its full enclosure design and Thiele/Small parameters.
Recommended Bass Reflex (Vented)
PORT BUILDABLE| Net Box Volume (Vb) | 72.5 Liters |
| Tuning Frequency (Fb) | 53.6 Hz |
| F3 (-3 dB Cutoff) | 54.2 Hz |
| F6 / F10 Extension | 47.9 Hz / 41.8 Hz |
| Port Inner Diameter | Ø 12.5 cm |
| Port Physical Length | 8.7 cm |
| First Pipe Resonance | 1972.0 Hz |
| Estimated MOL @ F3 | 121.5 dB SPL |
Recommended Sealed (Acoustic Suspension)
MAX TRANSIENT DAMPING| Net Box Volume (Vb) | 33.2 Liters |
| System Q (Qtc) | 0.707 (Butterworth) |
| System Resonance (Fc) | 95.3 Hz |
| F3 (-3 dB Cutoff) | 95.3 Hz |
| F6 / F10 Extension | 72.1 Hz / 54.3 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 44.5 Hz |
| Total Q (Qts) | 0.31 |
| Electrical Q (Qes) | 0.318 |
| Mechanical Q (Qms) | 11.95 |
| Equivalent Volume (Vas) | 139.4 Liters |
| Diaphragm Area (Sd) | 855.3 cm² |
| DC Resistance (Re) | 5.9 Ω |
| Efficiency Bandwidth Product (EBP) | 139.8 |
| Linear Excursion (Xmax) | 6.5 mm |
| Thermal Power (Pe) | 600.0 W |
| Nominal Diameter | 15.0" |
| Catalog Source | Load Forge catalog (manufacturer datasheets and retailer listings) |
Frequently Asked Questions
What is the recommended ported (bass reflex) box volume for Ciare NDK15-3-8?
Load Forge's calculated alignment puts Ciare NDK15-3-8 in a 72.5 liter vented enclosure tuned to 53.6 Hz, reaching an F3 cutoff of approximately 54.2 Hz.
Can Ciare NDK15-3-8 be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 33.2 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 95.3 Hz.
What port dimensions should be used for Ciare NDK15-3-8 to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 12.5 cm with a length of 8.7 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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