Vented Specialist

B&C Speakers B&C 12CL64 12" Neodymium Woofer

Best box: 30.2 L bass reflex tuned to 64.5 Hz · F3 66.9 Hz

Predicted SPL response of the B&C Speakers B&C 12CL64 12" Neodymium Woofer in the recommended 30.2 L bass reflex box versus the alternative — open it in the simulator Open and tweak this box live ↗

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Recommended Bass Reflex (Vented)

PORT BUILDABLE
Net Box Volume (Vb) 30.2 Liters
Tuning Frequency (Fb) 64.5 Hz
F3 (-3 dB Cutoff) 66.9 Hz
F6 / F10 Extension 58.5 Hz / 50.8 Hz
Port Inner Diameter Ø 10.0 cm
Port Physical Length 11.6 cm
First Pipe Resonance 1484.0 Hz
Estimated MOL @ F3 119.3 dB SPL
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Recommended Sealed (Acoustic Suspension)

MAX TRANSIENT DAMPING
Net Box Volume (Vb) 14.0 Liters
System Q (Qtc) 0.707 (Butterworth)
System Resonance (Fc) 116.3 Hz
F3 (-3 dB Cutoff) 113.4 Hz
F6 / F10 Extension 86.9 Hz / 65.9 Hz
Air Spring Linearity High (Zero port compression)
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Thiele/Small Parameters

Resonance (Fs) 52.0 Hz
Total Q (Qts) 0.3
Electrical Q (Qes) 0.322
Mechanical Q (Qms) 4.3
Equivalent Volume (Vas) 63.7 Liters
Diaphragm Area (Sd) 522.0 cm²
DC Resistance (Re) 5.5 Ω
Efficiency Bandwidth Product (EBP) 161.2
Linear Excursion (Xmax) 4.5 mm
Thermal Power (Pe) 500.0 W
Nominal Diameter 12.0"
Catalog Source Load Forge catalog (manufacturer datasheets and retailer listings)

Frequently Asked Questions

What is the recommended ported (bass reflex) box volume for B&C Speakers B&C 12CL64 12" Neodymium Woofer?

Load Forge's calculated alignment puts B&C Speakers B&C 12CL64 12" Neodymium Woofer in a 30.2 liter vented enclosure tuned to 64.5 Hz, reaching an F3 cutoff of approximately 66.9 Hz.

Can B&C Speakers B&C 12CL64 12" Neodymium Woofer be used in a sealed box?

Yes. In a sealed (acoustic suspension) enclosure of 14.0 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 113.4 Hz.

What port dimensions should be used for B&C Speakers B&C 12CL64 12" Neodymium Woofer to avoid port chuffing?

Sized from cone displacement (Sd × Xmax), a minimum port diameter of 10.0 cm with a length of 11.6 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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B&C Speakers B&C 12CL64 12" Neodymium Woofer Enclosure Card
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