Vented Specialist

JBL Professional K110

Best box: 36.2 L bass reflex tuned to 68.5 Hz · F3 67.8 Hz

Predicted SPL response of the JBL Professional K110 in the recommended 36.2 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

  • Limited linear excursion (Xmax: 1.52 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) 36.2 Liters
Tuning Frequency (Fb) 68.5 Hz
F3 (-3 dB Cutoff) 67.8 Hz
F6 / F10 Extension 59.8 Hz / 52.2 Hz
Port Inner Diameter Ø 7.5 cm
Port Physical Length 2.4 cm
First Pipe Resonance 7068.0 Hz
Estimated MOL @ F3 112.0 dB SPL
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Recommended Sealed (Acoustic Suspension)

MAX TRANSIENT DAMPING
Net Box Volume (Vb) 15.9 Liters
System Q (Qtc) 0.707 (Butterworth)
System Resonance (Fc) 118.0 Hz
F3 (-3 dB Cutoff) 121.0 Hz
F6 / F10 Extension 92.9 Hz / 70.8 Hz
Air Spring Linearity High (Zero port compression)
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Thiele/Small Parameters

Resonance (Fs) 65.0 Hz
Total Q (Qts) 0.36
Electrical Q (Qes) 0.396
Mechanical Q (Qms) 4.0
Equivalent Volume (Vas) 45.3 Liters
Diaphragm Area (Sd) 320.0 cm²
DC Resistance (Re) 6.0 Ω
Efficiency Bandwidth Product (EBP) 164.3
Linear Excursion (Xmax) 1.5 mm
Thermal Power (Pe) 75.0 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 JBL Professional K110?

Load Forge's calculated alignment puts JBL Professional K110 in a 36.2 liter vented enclosure tuned to 68.5 Hz, reaching an F3 cutoff of approximately 67.8 Hz.

Can JBL Professional K110 be used in a sealed box?

Yes. In a sealed (acoustic suspension) enclosure of 15.9 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 121.0 Hz.

What port dimensions should be used for JBL Professional K110 to avoid port chuffing?

Sized from cone displacement (Sd × Xmax), a minimum port diameter of 7.5 cm with a length of 2.4 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.

JBL Professional K110 Enclosure Card
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