Sealed Specialist

XPERT EX10NMB-CFXL

Best box: 24.5 L bass reflex tuned to 34.9 Hz · F3 51.0 Hz

Predicted SPL response of the XPERT EX10NMB-CFXL in the recommended 24.5 L bass reflex box versus the alternative — open it in the simulator Open and tweak this box live ↗

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⚠️ Engineering Notice for Builders

  • Port length (71.7 cm) exceeds a straight internal run; use an elbow bend, slotted vent or 3D folded duct to fit the enclosure.

Recommended Bass Reflex (Vented)

PORT NEEDS ELBOW / 3D
Net Box Volume (Vb) 24.5 Liters
Tuning Frequency (Fb) 34.9 Hz
F3 (-3 dB Cutoff) 51.0 Hz
F6 / F10 Extension 42.6 Hz / 32.9 Hz
Port Inner Diameter Ø 10.0 cm
Port Physical Length 71.7 cm
First Pipe Resonance 240.0 Hz
Estimated MOL @ F3 115.3 dB SPL
⚠️ Port feasibility: a straight 10.0 cm tube needs 71.7 cm of internal length. Use an elbow bend, a slotted vent or a 3D folded duct.
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Sealed (Acoustic Suspension) — compromise

SUITS INFINITE / OPEN BAFFLE

With Qts 0.76 a Butterworth (Qtc 0.707) box would be many times Vas. A box equal to Vas reaches Qtc 1.075; for a flat response this driver is better used on an infinite (IB) or open baffle.

Net Box Volume (Vb) 30.6 Liters
System Q (Qtc) 1.075 (above Butterworth: Qtc cannot fall below Qts (0.76))
System Resonance (Fc) 58.0 Hz
F3 (-3 dB Cutoff) 48.5 Hz
F6 / F10 Extension 40.3 Hz / 32.5 Hz
Air Spring Linearity High (Zero port compression)
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Thiele/Small Parameters

Resonance (Fs) 41.0 Hz
Total Q (Qts) 0.76
Electrical Q (Qes) 0.882
Mechanical Q (Qms) 5.49
Equivalent Volume (Vas) 30.6 Liters
Diaphragm Area (Sd) 350.0 cm²
DC Resistance (Re) 3.0 Ω
Efficiency Bandwidth Product (EBP) 46.5
Linear Excursion (Xmax) 15.0 mm
Thermal Power (Pe) 800.0 W
Nominal Diameter 10.0"
Catalog Source Load Forge catalog (manufacturer datasheets and retailer listings)

Frequently Asked Questions

What is the recommended ported (bass reflex) box volume for XPERT EX10NMB-CFXL?

Load Forge's calculated alignment puts XPERT EX10NMB-CFXL in a 24.5 liter vented enclosure tuned to 34.9 Hz, reaching an F3 cutoff of approximately 51.0 Hz.

Can XPERT EX10NMB-CFXL be used in a sealed box?

Yes. In a sealed (acoustic suspension) enclosure of 30.6 liters with a Qtc of 1.075 (above Butterworth: Qtc cannot fall below Qts (0.76)), the system exhibits an F3 of 48.5 Hz.

What port dimensions should be used for XPERT EX10NMB-CFXL to avoid port chuffing?

Sized from cone displacement (Sd × Xmax), a minimum port diameter of 10.0 cm with a length of 71.7 cm is suggested; check the port air velocity at your drive level in the Load Forge Studio.

Shareable Acoustic Card for Forums & Social Media

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.

XPERT EX10NMB-CFXL Enclosure Card
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