Visaton W 100 X
Best box: 2.1 L bass reflex tuned to 53.5 Hz · F3 78.1 Hz
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Comparable 4.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Visaton W 100 X 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
- Port length (94.3 cm) exceeds a straight internal run; use an elbow bend, slotted vent or 3D folded duct to fit the enclosure.
Recommended Bass Reflex (Vented)
PORT NEEDS ELBOW / 3D| Net Box Volume (Vb) | 2.1 Liters |
| Tuning Frequency (Fb) | 53.5 Hz |
| F3 (-3 dB Cutoff) | 78.1 Hz |
| F6 / F10 Extension | 67.5 Hz / 54.3 Hz |
| Port Inner Diameter | Ø 5.0 cm |
| Port Physical Length | 94.3 cm |
| First Pipe Resonance | 182.0 Hz |
| Estimated MOL @ F3 | 96.3 dB SPL |
Sealed (Acoustic Suspension) — compromise
SUITS INFINITE / OPEN BAFFLEWith Qts 0.73 a Butterworth (Qtc 0.707) box would be many times Vas. A box equal to Vas reaches Qtc 1.032; for a flat response this driver is better used on an infinite (IB) or open baffle.
| Net Box Volume (Vb) | 2.6 Liters |
| System Q (Qtc) | 1.032 (above Butterworth: Qtc cannot fall below Qts (0.73)) |
| System Resonance (Fc) | 89.1 Hz |
| F3 (-3 dB Cutoff) | 69.1 Hz |
| F6 / F10 Extension | 59.4 Hz / 49.2 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 63.0 Hz |
| Total Q (Qts) | 0.73 |
| Electrical Q (Qes) | 0.948 |
| Mechanical Q (Qms) | 3.17 |
| Equivalent Volume (Vas) | 2.6 Liters |
| Diaphragm Area (Sd) | 51.5 cm² |
| DC Resistance (Re) | 3.6 Ω |
| Efficiency Bandwidth Product (EBP) | 66.4 |
| Linear Excursion (Xmax) | 7.5 mm |
| Thermal Power (Pe) | 40.0 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 W 100 X?
Load Forge's calculated alignment puts Visaton W 100 X in a 2.1 liter vented enclosure tuned to 53.5 Hz, reaching an F3 cutoff of approximately 78.1 Hz.
Can Visaton W 100 X be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 2.6 liters with a Qtc of 1.032 (above Butterworth: Qtc cannot fall below Qts (0.73)), the system exhibits an F3 of 69.1 Hz.
What port dimensions should be used for Visaton W 100 X to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 5.0 cm with a length of 94.3 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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