Vented Specialist

Peerless NCP-1230R01-08

Best box: 40.0 L bass reflex tuned to 64.7 Hz · F3 62.1 Hz

Predicted SPL response of the Peerless NCP-1230R01-08 in the recommended 40.0 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) 40.0 Liters
Tuning Frequency (Fb) 64.7 Hz
F3 (-3 dB Cutoff) 62.1 Hz
F6 / F10 Extension 55.5 Hz / 49.0 Hz
Port Inner Diameter Ø 12.5 cm
Port Physical Length 13.0 cm
First Pipe Resonance 1320.0 Hz
Estimated MOL @ F3 120.5 dB SPL
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Recommended Sealed (Acoustic Suspension)

MAX TRANSIENT DAMPING
Net Box Volume (Vb) 17.5 Liters
System Q (Qtc) 0.707 (Butterworth)
System Resonance (Fc) 114.2 Hz
F3 (-3 dB Cutoff) 113.5 Hz
F6 / F10 Extension 86.0 Hz / 64.9 Hz
Air Spring Linearity High (Zero port compression)
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Thiele/Small Parameters

Resonance (Fs) 63.0 Hz
Total Q (Qts) 0.37
Electrical Q (Qes) 0.394
Mechanical Q (Qms) 6.15
Equivalent Volume (Vas) 46.3 Liters
Diaphragm Area (Sd) 547.0 cm²
DC Resistance (Re) 5.6 Ω
Efficiency Bandwidth Product (EBP) 160.0
Linear Excursion (Xmax) 7.9 mm
Thermal Power (Pe) 600.0 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 Peerless NCP-1230R01-08?

Load Forge's calculated alignment puts Peerless NCP-1230R01-08 in a 40.0 liter vented enclosure tuned to 64.7 Hz, reaching an F3 cutoff of approximately 62.1 Hz.

Can Peerless NCP-1230R01-08 be used in a sealed box?

Yes. In a sealed (acoustic suspension) enclosure of 17.5 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 113.5 Hz.

What port dimensions should be used for Peerless NCP-1230R01-08 to avoid port chuffing?

Sized from cone displacement (Sd × Xmax), a minimum port diameter of 12.5 cm with a length of 13.0 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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Peerless NCP-1230R01-08 Enclosure Card
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