Visaton W 165 A - 2 Ohm
Best box: 6.3 L bass reflex tuned to 61.2 Hz · F3 73.6 Hz
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Comparable 6.5" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Visaton W 165 A - 2 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 (6.3 L at 51.0 Hz) would need a 61.6 cm port; the recommendation is retuned to 6.3 L at 61.2 Hz so the port can be built.
Recommended Bass Reflex (Vented)
PORT BUILDABLE| Net Box Volume (Vb) | 6.3 Liters |
| Tuning Frequency (Fb) | 61.2 Hz |
| F3 (-3 dB Cutoff) | 73.6 Hz |
| F6 / F10 Extension | 61.7 Hz / 50.0 Hz |
| Port Inner Diameter | Ø 6.8 cm |
| Port Physical Length | 41.3 cm |
| First Pipe Resonance | 417.0 Hz |
| Estimated MOL @ F3 | 103.6 dB SPL |
Sealed (Acoustic Suspension) — compromise
SUITS INFINITE / OPEN BAFFLEWith Qts 0.63 a Butterworth (Qtc 0.707) box would be many times Vas. A box equal to Vas reaches Qtc 0.891; for a flat response this driver is better used on an infinite (IB) or open baffle.
| Net Box Volume (Vb) | 7.8 Liters |
| System Q (Qtc) | 0.891 (above Butterworth) |
| System Resonance (Fc) | 84.9 Hz |
| F3 (-3 dB Cutoff) | 74.0 Hz |
| F6 / F10 Extension | 59.6 Hz / 46.9 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 60.0 Hz |
| Total Q (Qts) | 0.63 |
| Electrical Q (Qes) | 0.736 |
| Mechanical Q (Qms) | 4.38 |
| Equivalent Volume (Vas) | 7.8 Liters |
| Diaphragm Area (Sd) | 136.2 cm² |
| DC Resistance (Re) | 2.2 Ω |
| Efficiency Bandwidth Product (EBP) | 81.5 |
| Linear Excursion (Xmax) | 10.3 mm |
| Thermal Power (Pe) | 60.0 W |
| Nominal Diameter | 6.5" |
| 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 165 A - 2 Ohm?
Load Forge's calculated alignment puts Visaton W 165 A - 2 Ohm in a 6.3 liter vented enclosure tuned to 61.2 Hz, reaching an F3 cutoff of approximately 73.6 Hz.
Can Visaton W 165 A - 2 Ohm be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 7.8 liters with a Qtc of 0.891 (above Butterworth), the system exhibits an F3 of 74.0 Hz.
What port dimensions should be used for Visaton W 165 A - 2 Ohm to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 6.8 cm with a length of 41.3 cm is suggested; check the port air velocity at your drive level in the Load Forge Studio.
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