Adire Audio ADKA15D4 15" Kali Subwoofer DVC 4x4 Ohm
Best box: 103.8 L bass reflex tuned to 29.4 Hz · F3 27.1 Hz
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Comparable 15.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Adire Audio ADKA15D4 15" Kali Subwoofer DVC 4x4 Ohm does not fit your target box volume or tuning. Each entry links to its full enclosure design and Thiele/Small parameters.
⚠️ Engineering Notice for Builders
- The textbook alignment (90.3 L at 26.7 Hz) would need a 132.0 cm port; the recommendation is retuned to 103.8 L at 29.4 Hz so the port can be built.
- Port length (98.7 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) | 103.8 Liters |
| Tuning Frequency (Fb) | 29.4 Hz |
| F3 (-3 dB Cutoff) | 27.1 Hz |
| F6 / F10 Extension | 24.7 Hz / 22.1 Hz |
| Port Inner Diameter | Ø 20.8 cm |
| Port Physical Length | 98.7 cm |
| First Pipe Resonance | 174.0 Hz |
| Estimated MOL @ F3 | 120.6 dB SPL |
Recommended Sealed (Acoustic Suspension)
MAX TRANSIENT DAMPING| Net Box Volume (Vb) | 39.3 Liters |
| System Q (Qtc) | 0.707 (Butterworth) |
| System Resonance (Fc) | 48.7 Hz |
| F3 (-3 dB Cutoff) | 50.0 Hz |
| F6 / F10 Extension | 37.5 Hz / 28.2 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 27.3 Hz |
| Total Q (Qts) | 0.39 |
| Electrical Q (Qes) | 0.42 |
| Mechanical Q (Qms) | 5.4 |
| Equivalent Volume (Vas) | 89.8 Liters |
| Diaphragm Area (Sd) | 791.7 cm² |
| DC Resistance (Re) | 6.83 Ω |
| Efficiency Bandwidth Product (EBP) | 64.9 |
| Linear Excursion (Xmax) | 40.0 mm |
| Thermal Power (Pe) | 3000.0 W |
| Nominal Diameter | 15.0" |
| Catalog Source | Load Forge catalog (manufacturer datasheets and retailer listings) |
Frequently Asked Questions
What is the recommended ported (bass reflex) box volume for Adire Audio ADKA15D4 15" Kali Subwoofer DVC 4x4 Ohm?
Load Forge's calculated alignment puts Adire Audio ADKA15D4 15" Kali Subwoofer DVC 4x4 Ohm in a 103.8 liter vented enclosure tuned to 29.4 Hz, reaching an F3 cutoff of approximately 27.1 Hz.
Can Adire Audio ADKA15D4 15" Kali Subwoofer DVC 4x4 Ohm be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 39.3 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 50.0 Hz.
What port dimensions should be used for Adire Audio ADKA15D4 15" Kali Subwoofer DVC 4x4 Ohm to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 20.8 cm with a length of 98.7 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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