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Rockville DV8K52

Best box: 19.7 L bass reflex tuned to 34.6 Hz · F3 35.8 Hz

Predicted SPL response of the Rockville DV8K52 in the recommended 19.7 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 (19.7 L at 33.0 Hz) would need a 102.6 cm port; the recommendation is retuned to 19.7 L at 34.6 Hz so the port can be built.
  • Xmax is not published, so the port size is an empirical estimate (area ≥ 12 in² per ft³ of net volume, minimum by driver size), not a displacement calculation. Check air velocity in Load Forge Studio.
  • Port length (92.7 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) 19.7 Liters
Tuning Frequency (Fb) 34.6 Hz
F3 (-3 dB Cutoff) 35.8 Hz
F6 / F10 Extension 29.7 Hz / 26.0 Hz
Port Inner Diameter ESTIMATED Ø 10.0 cm
Port Physical Length 92.7 cm
First Pipe Resonance 186.0 Hz
Estimated MOL @ F3 114.2 dB SPL
⚠️ Port feasibility: a straight 10.0 cm tube needs 92.7 cm of internal length. Use an elbow bend, a slotted vent or a 3D folded duct.
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Recommended Sealed (Acoustic Suspension)

MAX TRANSIENT DAMPING
Net Box Volume (Vb) 17.9 Liters
System Q (Qtc) 0.707 (Butterworth)
System Resonance (Fc) 58.3 Hz
F3 (-3 dB Cutoff) 59.2 Hz
F6 / F10 Extension 44.6 Hz / 33.6 Hz
Air Spring Linearity High (Zero port compression)
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Thiele/Small Parameters

Resonance (Fs) 44.9 Hz
Total Q (Qts) 0.537
Electrical Q (Qes) 0.591
Mechanical Q (Qms) 5.88
Equivalent Volume (Vas) 13.1 Liters
Diaphragm Area (Sd) 201.1 cm²
DC Resistance (Re) 3.43 Ω
Efficiency Bandwidth Product (EBP) 76.0
Linear Excursion (Xmax) N/A mm
Thermal Power (Pe) 1600.0 W
Nominal Diameter 8.0"
Catalog Source Load Forge catalog (manufacturer datasheets and retailer listings)

Frequently Asked Questions

What is the recommended ported (bass reflex) box volume for Rockville DV8K52?

Load Forge's calculated alignment puts Rockville DV8K52 in a 19.7 liter vented enclosure tuned to 34.6 Hz, reaching an F3 cutoff of approximately 35.8 Hz.

Can Rockville DV8K52 be used in a sealed box?

Yes. In a sealed (acoustic suspension) enclosure of 17.9 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 59.2 Hz.

What port dimensions should be used for Rockville DV8K52 to avoid port chuffing?

Xmax is not published for Rockville DV8K52, so the port is an empirical estimate: a 10.0 cm diameter with a length of 92.7 cm (area at least 12 in² per ft³ of net volume). Check the air velocity at your power level in 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.

Rockville DV8K52 Enclosure Card
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