LaVoce FBASS12-20
Best box: 113.1 L bass reflex tuned to 44.8 Hz · F3 41.0 Hz
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Comparable 12.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the LaVoce FBASS12-20 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) | 113.1 Liters |
| Tuning Frequency (Fb) | 44.8 Hz |
| F3 (-3 dB Cutoff) | 41.0 Hz |
| F6 / F10 Extension | 37.2 Hz / 33.3 Hz |
| Port Inner Diameter | Ø 10.0 cm |
| Port Physical Length | 3.2 cm |
| First Pipe Resonance | 5340.0 Hz |
| Estimated MOL @ F3 | 114.6 dB SPL |
Recommended Sealed (Acoustic Suspension)
MAX TRANSIENT DAMPING| Net Box Volume (Vb) | 55.4 Liters |
| System Q (Qtc) | 0.707 (Butterworth) |
| System Resonance (Fc) | 76.7 Hz |
| F3 (-3 dB Cutoff) | 77.6 Hz |
| F6 / F10 Extension | 58.5 Hz / 44.0 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 53.0 Hz |
| Total Q (Qts) | 0.46 |
| Electrical Q (Qes) | 0.51 |
| Mechanical Q (Qms) | 4.71 |
| Equivalent Volume (Vas) | 75.4 Liters |
| Diaphragm Area (Sd) | 543.2 cm² |
| DC Resistance (Re) | 5.3 Ω |
| Efficiency Bandwidth Product (EBP) | 104.0 |
| Linear Excursion (Xmax) | 4.3 mm |
| Thermal Power (Pe) | 200.0 W |
| Nominal Diameter | 12.0" |
| Catalog Source | Load Forge catalog (manufacturer datasheets and retailer listings) |
Frequently Asked Questions
What is the recommended ported (bass reflex) box volume for LaVoce FBASS12-20?
Load Forge's calculated alignment puts LaVoce FBASS12-20 in a 113.1 liter vented enclosure tuned to 44.8 Hz, reaching an F3 cutoff of approximately 41.0 Hz.
Can LaVoce FBASS12-20 be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 55.4 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 77.6 Hz.
What port dimensions should be used for LaVoce FBASS12-20 to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 10.0 cm with a length of 3.2 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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