Visaton KT 100 V
Best box: 11.2 L bass reflex tuned to 34.2 Hz · F3 32.5 Hz
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Comparable 4.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Visaton KT 100 V 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 (11.2 L at 29.7 Hz) would need a 56.0 cm port; the recommendation is retuned to 11.2 L at 34.2 Hz so the port can be built.
- Limited linear excursion (Xmax: 2.0 mm); set a high-pass subsonic filter at 25–30 Hz when driven with high power.
Recommended Bass Reflex (Vented)
PORT BUILDABLE| Net Box Volume (Vb) | 11.2 Liters |
| Tuning Frequency (Fb) | 34.2 Hz |
| F3 (-3 dB Cutoff) | 32.5 Hz |
| F6 / F10 Extension | 28.6 Hz / 25.5 Hz |
| Port Inner Diameter | Ø 5.0 cm |
| Port Physical Length | 41.4 cm |
| First Pipe Resonance | 416.0 Hz |
| Estimated MOL @ F3 | 86.9 dB SPL |
Recommended Sealed (Acoustic Suspension)
MAX TRANSIENT DAMPING| Net Box Volume (Vb) | 12.6 Liters |
| System Q (Qtc) | 0.707 (Butterworth) |
| System Resonance (Fc) | 52.4 Hz |
| F3 (-3 dB Cutoff) | 57.5 Hz |
| F6 / F10 Extension | 41.8 Hz / 30.8 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 42.0 Hz |
| Total Q (Qts) | 0.56 |
| Electrical Q (Qes) | 0.692 |
| Mechanical Q (Qms) | 2.94 |
| Equivalent Volume (Vas) | 7.5 Liters |
| Diaphragm Area (Sd) | 51.4 cm² |
| DC Resistance (Re) | 3.7 Ω |
| Efficiency Bandwidth Product (EBP) | 60.7 |
| Linear Excursion (Xmax) | 2.0 mm |
| Thermal Power (Pe) | 25.0 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 KT 100 V?
Load Forge's calculated alignment puts Visaton KT 100 V in a 11.2 liter vented enclosure tuned to 34.2 Hz, reaching an F3 cutoff of approximately 32.5 Hz.
Can Visaton KT 100 V be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 12.6 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 57.5 Hz.
What port dimensions should be used for Visaton KT 100 V to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 5.0 cm with a length of 41.4 cm is suggested; check the port air velocity at your drive level in the Load Forge Studio.
Shareable Acoustic Card for Forums & Social Media
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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