Accuton C220-11-227
Best box: 45.4 L bass reflex tuned to 31.6 Hz · F3 32.6 Hz
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Comparable 8.7" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Accuton C220-11-227 does not fit your target box volume or tuning. Each entry links to its full enclosure design and Thiele/Small parameters.
Recommended Bass Reflex (Vented)
PORT BUILDABLE| Net Box Volume (Vb) | 45.4 Liters |
| Tuning Frequency (Fb) | 31.6 Hz |
| F3 (-3 dB Cutoff) | 32.6 Hz |
| F6 / F10 Extension | 28.5 Hz / 24.8 Hz |
| Port Inner Diameter | Ø 5.0 cm |
| Port Physical Length | 9.4 cm |
| First Pipe Resonance | 1828.0 Hz |
| Estimated MOL @ F3 | 105.8 dB SPL |
Recommended Sealed (Acoustic Suspension)
MAX TRANSIENT DAMPING| Net Box Volume (Vb) | 20.5 Liters |
| System Q (Qtc) | 0.707 (Butterworth) |
| System Resonance (Fc) | 58.1 Hz |
| F3 (-3 dB Cutoff) | 59.1 Hz |
| F6 / F10 Extension | 44.4 Hz / 33.5 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 27.0 Hz |
| Total Q (Qts) | 0.32 |
| Electrical Q (Qes) | 0.338 |
| Mechanical Q (Qms) | 5.96 |
| Equivalent Volume (Vas) | 79.6 Liters |
| Diaphragm Area (Sd) | 224.0 cm² |
| DC Resistance (Re) | 5.6 Ω |
| Efficiency Bandwidth Product (EBP) | 79.8 |
| Linear Excursion (Xmax) | 5.0 mm |
| Thermal Power (Pe) | 120.0 W |
| Nominal Diameter | 8.7" |
| Catalog Source | Load Forge catalog (manufacturer datasheets and retailer listings) |
Frequently Asked Questions
What is the recommended ported (bass reflex) box volume for Accuton C220-11-227?
Load Forge's calculated alignment puts Accuton C220-11-227 in a 45.4 liter vented enclosure tuned to 31.6 Hz, reaching an F3 cutoff of approximately 32.6 Hz.
Can Accuton C220-11-227 be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 20.5 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 59.1 Hz.
What port dimensions should be used for Accuton C220-11-227 to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 5.0 cm with a length of 9.4 cm is suggested; check the port air velocity at your drive level in the Load Forge Studio.
Shareable Acoustic Card for Forums & Social Media
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