Vented Specialist

SEAS H0454_P11RC

Best box: 3.6 L bass reflex tuned to 61.0 Hz · F3 62.3 Hz

Predicted SPL response of the SEAS H0454_P11RC in the recommended 3.6 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: 3.0 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) 3.6 Liters
Tuning Frequency (Fb) 61.0 Hz
F3 (-3 dB Cutoff) 62.3 Hz
F6 / F10 Extension 54.5 Hz / 47.5 Hz
Port Inner Diameter Ø 5.0 cm
Port Physical Length 40.4 cm
First Pipe Resonance 426.0 Hz
Estimated MOL @ F3 104.8 dB SPL
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Recommended Sealed (Acoustic Suspension)

MAX TRANSIENT DAMPING
Net Box Volume (Vb) 1.6 Liters
System Q (Qtc) 0.707 (Butterworth)
System Resonance (Fc) 112.6 Hz
F3 (-3 dB Cutoff) 112.7 Hz
F6 / F10 Extension 85.6 Hz / 64.5 Hz
Air Spring Linearity High (Zero port compression)
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Thiele/Small Parameters

Resonance (Fs) 55.0 Hz
Total Q (Qts) 0.34
Electrical Q (Qes) 0.436
Mechanical Q (Qms) 1.54
Equivalent Volume (Vas) 5.3 Liters
Diaphragm Area (Sd) 55.0 cm²
DC Resistance (Re) 5.7 Ω
Efficiency Bandwidth Product (EBP) 126.1
Linear Excursion (Xmax) 3.0 mm
Thermal Power (Pe) N/A W
Nominal Diameter 4.0"
Catalog Source Load Forge catalog (manufacturer datasheets and retailer listings)

Frequently Asked Questions

What is the recommended ported (bass reflex) box volume for SEAS H0454_P11RC?

Load Forge's calculated alignment puts SEAS H0454_P11RC in a 3.6 liter vented enclosure tuned to 61.0 Hz, reaching an F3 cutoff of approximately 62.3 Hz.

Can SEAS H0454_P11RC be used in a sealed box?

Yes. In a sealed (acoustic suspension) enclosure of 1.6 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 112.7 Hz.

What port dimensions should be used for SEAS H0454_P11RC to avoid port chuffing?

Sized from cone displacement (Sd × Xmax), a minimum port diameter of 5.0 cm with a length of 40.4 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.

SEAS H0454_P11RC Enclosure Card
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