Visaton AL 170 A 8 OHM
Best box: 22.4 L bass reflex tuned to 46.3 Hz · F3 45.0 Hz
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Comparable 6.5" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Visaton AL 170 A 8 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 (22.4 L at 42.1 Hz) would need a 52.1 cm port; the recommendation is retuned to 22.4 L at 46.3 Hz so the port can be built.
Recommended Bass Reflex (Vented)
PORT BUILDABLE| Net Box Volume (Vb) | 22.4 Liters |
| Tuning Frequency (Fb) | 46.3 Hz |
| F3 (-3 dB Cutoff) | 45.0 Hz |
| F6 / F10 Extension | 40.3 Hz / 35.5 Hz |
| Port Inner Diameter | Ø 10.0 cm |
| Port Physical Length | 41.9 cm |
| First Pipe Resonance | 411.0 Hz |
| Estimated MOL @ F3 | 104.4 dB SPL |
Recommended Sealed (Acoustic Suspension)
MAX TRANSIENT DAMPING| Net Box Volume (Vb) | 9.9 Liters |
| System Q (Qtc) | 0.707 (Butterworth) |
| System Resonance (Fc) | 76.7 Hz |
| F3 (-3 dB Cutoff) | 78.9 Hz |
| F6 / F10 Extension | 59.3 Hz / 44.6 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 38.0 Hz |
| Total Q (Qts) | 0.34 |
| Electrical Q (Qes) | 0.368 |
| Mechanical Q (Qms) | 4.47 |
| Equivalent Volume (Vas) | 33.0 Liters |
| Diaphragm Area (Sd) | 133.0 cm² |
| DC Resistance (Re) | 5.6 Ω |
| Efficiency Bandwidth Product (EBP) | 103.3 |
| Linear Excursion (Xmax) | 22.0 mm |
| Thermal Power (Pe) | 70.0 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 AL 170 A 8 OHM?
Load Forge's calculated alignment puts Visaton AL 170 A 8 OHM in a 22.4 liter vented enclosure tuned to 46.3 Hz, reaching an F3 cutoff of approximately 45.0 Hz.
Can Visaton AL 170 A 8 OHM be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 9.9 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 78.9 Hz.
What port dimensions should be used for Visaton AL 170 A 8 OHM to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 10.0 cm with a length of 41.9 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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