Passive Radiator / Folded Port

DC Audio XL 10"

Best box: 3.7 L sealed · Fc 86.0 Hz · F3 86.7 Hz

Predicted SPL response of the DC Audio XL 10" in the recommended 3.7 L sealed box versus the alternative — open it in the simulator Open and tweak this box live ↗

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⚠️ Engineering Notice for Builders

  • Straight vent would be 284.7 cm long: not physically buildable as a simple tube. Use a passive radiator, a folded slot port or model a 3D folded duct in Load Forge Studio.

Textbook Bass Reflex — not recommended

PORT NOT BUILDABLE
Net Box Volume (Vb) 8.4 Liters
Tuning Frequency (Fb) 46.2 Hz
F3 (-3 dB Cutoff) 47.5 Hz
F6 / F10 Extension 41.4 Hz / 36.0 Hz
Port Inner Diameter Ø 15.0 cm
Port Physical Length 284.7 cm
First Pipe Resonance 60.0 Hz
Estimated MOL @ F3 107.5 dB SPL
⚠️ Port feasibility: a straight tube would need 284.7 cm and cannot fit in a practical cabinet, and no nearby retune stays buildable without a bass hump. Prefer the sealed alignment, a passive radiator, or a 3D folded duct in Load Forge Studio.
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Recommended Sealed (Acoustic Suspension)

MAX TRANSIENT DAMPING
Net Box Volume (Vb) 3.7 Liters
System Q (Qtc) 0.707 (Butterworth)
System Resonance (Fc) 86.0 Hz
F3 (-3 dB Cutoff) 86.7 Hz
F6 / F10 Extension 65.6 Hz / 49.5 Hz
Air Spring Linearity High (Zero port compression)
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Thiele/Small Parameters

Resonance (Fs) 41.7 Hz
Total Q (Qts) 0.34
Electrical Q (Qes) 0.351
Mechanical Q (Qms) 11.24
Equivalent Volume (Vas) 12.4 Liters
Diaphragm Area (Sd) 314.0 cm²
DC Resistance (Re) 3.98 Ω
Efficiency Bandwidth Product (EBP) 118.9
Linear Excursion (Xmax) 26.0 mm
Thermal Power (Pe) 300.0 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 DC Audio XL 10"?

A simple ported box is not recommended for DC Audio XL 10": the textbook alignment (8.4 liters tuned to 46.2 Hz) needs a 284.7 cm port, and no nearby retune stays buildable without a bass hump. A sealed box, a passive radiator or a folded duct is the practical choice.

Can DC Audio XL 10" be used in a sealed box?

Yes. In a sealed (acoustic suspension) enclosure of 3.7 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 86.7 Hz.

What port dimensions should be used for DC Audio XL 10" to avoid port chuffing?

A straight 15.0 cm port would need 284.7 cm of length, which does not fit a practical cabinet. Use a passive radiator or a folded/3D duct instead of a straight tube.

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.

DC Audio XL 10" Enclosure Card
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