FaitalPRO 6FE400-8F
Best box: 4.0 L bass reflex tuned to 105.3 Hz · F3 103.8 Hz
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Comparable 6.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the FaitalPRO 6FE400-8F 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) | 4.0 Liters |
| Tuning Frequency (Fb) | 105.3 Hz |
| F3 (-3 dB Cutoff) | 103.8 Hz |
| F6 / F10 Extension | 91.8 Hz / 80.6 Hz |
| Port Inner Diameter | Ø 6.8 cm |
| Port Physical Length | 19.7 cm |
| First Pipe Resonance | 874.0 Hz |
| Estimated MOL @ F3 | 112.4 dB SPL |
Recommended Sealed (Acoustic Suspension)
MAX TRANSIENT DAMPING| Net Box Volume (Vb) | 1.8 Liters |
| System Q (Qtc) | 0.707 (Butterworth) |
| System Resonance (Fc) | 190.7 Hz |
| F3 (-3 dB Cutoff) | 189.8 Hz |
| F6 / F10 Extension | 144.2 Hz / 109.0 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 100.0 Hz |
| Total Q (Qts) | 0.36 |
| Electrical Q (Qes) | 0.399 |
| Mechanical Q (Qms) | 3.7 |
| Equivalent Volume (Vas) | 5.0 Liters |
| Diaphragm Area (Sd) | 141.0 cm² |
| DC Resistance (Re) | 5.0 Ω |
| Efficiency Bandwidth Product (EBP) | 250.8 |
| Linear Excursion (Xmax) | 4.8 mm |
| Thermal Power (Pe) | 200.0 W |
| Nominal Diameter | 6.0" |
| Catalog Source | Load Forge catalog (manufacturer datasheets and retailer listings) |
Frequently Asked Questions
What is the recommended ported (bass reflex) box volume for FaitalPRO 6FE400-8F?
Load Forge's calculated alignment puts FaitalPRO 6FE400-8F in a 4.0 liter vented enclosure tuned to 105.3 Hz, reaching an F3 cutoff of approximately 103.8 Hz.
Can FaitalPRO 6FE400-8F be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 1.8 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 189.8 Hz.
What port dimensions should be used for FaitalPRO 6FE400-8F to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 6.8 cm with a length of 19.7 cm is suggested; check the port air velocity at your drive level in the Load Forge Studio.
Shareable Acoustic Card for Forums & Social Media
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.
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