Vented Specialist

DS18 PRO-EXL104MB

Best box: 14.1 L bass reflex tuned to 73.6 Hz · F3 71.5 Hz

Predicted SPL response of the DS18 PRO-EXL104MB in the recommended 14.1 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) 14.1 Liters
Tuning Frequency (Fb) 73.6 Hz
F3 (-3 dB Cutoff) 71.5 Hz
F6 / F10 Extension 63.5 Hz / 55.9 Hz
Port Inner Diameter Ø 12.5 cm
Port Physical Length 39.2 cm
First Pipe Resonance 439.0 Hz
Estimated MOL @ F3 117.8 dB SPL
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Recommended Sealed (Acoustic Suspension)

MAX TRANSIENT DAMPING
Net Box Volume (Vb) 6.2 Liters
System Q (Qtc) 0.707 (Butterworth)
System Resonance (Fc) 132.2 Hz
F3 (-3 dB Cutoff) 132.3 Hz
F6 / F10 Extension 100.4 Hz / 75.9 Hz
Air Spring Linearity High (Zero port compression)
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Thiele/Small Parameters

Resonance (Fs) 72.8 Hz
Total Q (Qts) 0.377
Electrical Q (Qes) 0.411
Mechanical Q (Qms) 4.5
Equivalent Volume (Vas) 15.5 Liters
Diaphragm Area (Sd) 324.3 cm²
DC Resistance (Re) 3.3 Ω
Efficiency Bandwidth Product (EBP) 176.9
Linear Excursion (Xmax) 10.0 mm
Thermal Power (Pe) 600.0 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 DS18 PRO-EXL104MB?

Load Forge's calculated alignment puts DS18 PRO-EXL104MB in a 14.1 liter vented enclosure tuned to 73.6 Hz, reaching an F3 cutoff of approximately 71.5 Hz.

Can DS18 PRO-EXL104MB be used in a sealed box?

Yes. In a sealed (acoustic suspension) enclosure of 6.2 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 132.3 Hz.

What port dimensions should be used for DS18 PRO-EXL104MB to avoid port chuffing?

Sized from cone displacement (Sd × Xmax), a minimum port diameter of 12.5 cm with a length of 39.2 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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DS18 PRO-EXL104MB Enclosure Card
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