Versatile Load

Kicker 41L7104

Best box: 27.3 L bass reflex tuned to 35.7 Hz · F3 37.2 Hz

Predicted SPL response of the Kicker 41L7104 in the recommended 27.3 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

  • The textbook alignment (15.6 L at 34.0 Hz) would need a 195.0 cm port; the recommendation is retuned to 27.3 L at 35.7 Hz so the port can be built.
  • Port length (96.8 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) 27.3 Liters
Tuning Frequency (Fb) 35.7 Hz
F3 (-3 dB Cutoff) 37.2 Hz
F6 / F10 Extension 31.0 Hz / 26.7 Hz
Port Inner Diameter Ø 12.5 cm
Port Physical Length 96.8 cm
First Pipe Resonance 178.0 Hz
Estimated MOL @ F3 115.8 dB SPL
⚠️ Port feasibility: a straight 12.5 cm tube needs 96.8 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 0.627 a Butterworth (Qtc 0.707) box would be many times Vas. A box equal to Vas reaches Qtc 0.887; for a flat response this driver is better used on an infinite (IB) or open baffle.

Net Box Volume (Vb) 19.6 Liters
System Q (Qtc) 0.887 (above Butterworth)
System Resonance (Fc) 56.6 Hz
F3 (-3 dB Cutoff) 50.8 Hz
F6 / F10 Extension 40.7 Hz / 32.0 Hz
Air Spring Linearity High (Zero port compression)
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Thiele/Small Parameters

Resonance (Fs) 40.0 Hz
Total Q (Qts) 0.627
Electrical Q (Qes) 0.667
Mechanical Q (Qms) 10.41
Equivalent Volume (Vas) 19.6 Liters
Diaphragm Area (Sd) 441.0 cm²
DC Resistance (Re) 6.44 Ω
Efficiency Bandwidth Product (EBP) 60.0
Linear Excursion (Xmax) 18.2 mm
Thermal Power (Pe) 1500.0 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 Kicker 41L7104?

Load Forge's calculated alignment puts Kicker 41L7104 in a 27.3 liter vented enclosure tuned to 35.7 Hz, reaching an F3 cutoff of approximately 37.2 Hz.

Can Kicker 41L7104 be used in a sealed box?

Yes. In a sealed (acoustic suspension) enclosure of 19.6 liters with a Qtc of 0.887 (above Butterworth), the system exhibits an F3 of 50.8 Hz.

What port dimensions should be used for Kicker 41L7104 to avoid port chuffing?

Sized from cone displacement (Sd × Xmax), a minimum port diameter of 12.5 cm with a length of 96.8 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.

Kicker 41L7104 Enclosure Card
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