Fane Fane121XS-Single21CabPlansRev1a-060126
Best box: 178.9 L bass reflex tuned to 38.9 Hz · F3 36.9 Hz
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Comparable 19.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Fane Fane121XS-Single21CabPlansRev1a-060126 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
- Large enclosure volume (178.9 L) requires extensive internal matrix bracing to prevent panel resonance.
Recommended Bass Reflex (Vented)
PORT BUILDABLE| Net Box Volume (Vb) | 178.9 Liters |
| Tuning Frequency (Fb) | 38.9 Hz |
| F3 (-3 dB Cutoff) | 36.9 Hz |
| F6 / F10 Extension | 33.3 Hz / 29.5 Hz |
| Port Inner Diameter | Ø 20.0 cm |
| Port Physical Length | 20.5 cm |
| First Pipe Resonance | 840.0 Hz |
| Estimated MOL @ F3 | 124.3 dB SPL |
Recommended Sealed (Acoustic Suspension)
MAX TRANSIENT DAMPING| Net Box Volume (Vb) | 79.4 Liters |
| System Q (Qtc) | 0.707 (Butterworth) |
| System Resonance (Fc) | 69.6 Hz |
| F3 (-3 dB Cutoff) | 70.2 Hz |
| F6 / F10 Extension | 51.7 Hz / 38.3 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 35.0 Hz |
| Total Q (Qts) | 0.339 |
| Electrical Q (Qes) | 0.354 |
| Mechanical Q (Qms) | 7.88 |
| Equivalent Volume (Vas) | 266.0 Liters |
| Diaphragm Area (Sd) | 1520.0 cm² |
| DC Resistance (Re) | 5.1 Ω |
| Efficiency Bandwidth Product (EBP) | 98.8 |
| Linear Excursion (Xmax) | 14.0 mm |
| Thermal Power (Pe) | 1500.0 W |
| Nominal Diameter | 19.0" |
| Catalog Source | Load Forge catalog (manufacturer datasheets and retailer listings) |
Frequently Asked Questions
What is the recommended ported (bass reflex) box volume for Fane Fane121XS-Single21CabPlansRev1a-060126?
Load Forge's calculated alignment puts Fane Fane121XS-Single21CabPlansRev1a-060126 in a 178.9 liter vented enclosure tuned to 38.9 Hz, reaching an F3 cutoff of approximately 36.9 Hz.
Can Fane Fane121XS-Single21CabPlansRev1a-060126 be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 79.4 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 70.2 Hz.
What port dimensions should be used for Fane Fane121XS-Single21CabPlansRev1a-060126 to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 20.0 cm with a length of 20.5 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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