Visaton FR 10 F - 4 Ohm
Best box: 7.2 L bass reflex tuned to 114.8 Hz · F3 122.3 Hz
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Comparable 4.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Visaton FR 10 F - 4 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 (1.8 L at 127.5 Hz) would need a 16.5 cm port; the recommendation is retuned to 7.2 L at 114.8 Hz so the port can be built.
Recommended Bass Reflex (Vented)
PORT BUILDABLE| Net Box Volume (Vb) | 7.2 Liters |
| Tuning Frequency (Fb) | 114.8 Hz |
| F3 (-3 dB Cutoff) | 122.3 Hz |
| F6 / F10 Extension | 95.1 Hz / 88.3 Hz |
| Port Inner Diameter | Ø 5.0 cm |
| Port Physical Length | 2.6 cm |
| First Pipe Resonance | 6546.0 Hz |
| Estimated MOL @ F3 | 105.4 dB SPL |
Sealed (Acoustic Suspension) — compromise
SUITS INFINITE / OPEN BAFFLEWith Qts 1.52 a Butterworth (Qtc 0.707) box would be many times Vas. A box equal to Vas reaches Qtc 2.15; for a flat response this driver is better used on an infinite (IB) or open baffle.
| Net Box Volume (Vb) | 2.2 Liters |
| System Q (Qtc) | 2.15 (above Butterworth: Qtc cannot fall below Qts (1.52)) |
| System Resonance (Fc) | 212.1 Hz |
| F3 (-3 dB Cutoff) | 166.0 Hz |
| F6 / F10 Extension | 147.5 Hz / 126.1 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 150.0 Hz |
| Total Q (Qts) | 1.52 |
| Electrical Q (Qes) | 1.984 |
| Mechanical Q (Qms) | 6.5 |
| Equivalent Volume (Vas) | 2.2 Liters |
| Diaphragm Area (Sd) | 52.0 cm² |
| DC Resistance (Re) | 3.7 Ω |
| Efficiency Bandwidth Product (EBP) | 75.6 |
| Linear Excursion (Xmax) | 4.0 mm |
| Thermal Power (Pe) | 20.0 W |
| Nominal Diameter | 4.0" |
| Catalog Source | Load Forge catalog (manufacturer datasheets and retailer listings) |
Frequently Asked Questions
What is the recommended ported (bass reflex) box volume for Visaton FR 10 F - 4 Ohm?
Load Forge's calculated alignment puts Visaton FR 10 F - 4 Ohm in a 7.2 liter vented enclosure tuned to 114.8 Hz, reaching an F3 cutoff of approximately 122.3 Hz.
Can Visaton FR 10 F - 4 Ohm be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 2.2 liters with a Qtc of 2.15 (above Butterworth: Qtc cannot fall below Qts (1.52)), the system exhibits an F3 of 166.0 Hz.
What port dimensions should be used for Visaton FR 10 F - 4 Ohm to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 5.0 cm with a length of 2.6 cm is suggested; check the port air velocity at your drive level in the Load Forge Studio.
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