JA-0506II
| Brand | Yamaha |
| Manufacturer | Nippon Gakki Co. Ltd. |
| Function | Speaker (Supertweeter) |
| Country | Japan |
| Model ID | JA-0506II |
| Form Factor | Bookshelf / Stand Mounted |
| Signal Path | Passive Hardware |
| Dimensions | 70 × 70 × 108.5 cm (W × H × D) |
| Weight | 1.3kg |
| Frequency Response | 3kHz-20kHz |
| Type | Horn |
| Impedance (Nominal) | 8Ω |
| Resonant Frequency (Fs) | 3kHz |
| Crossover Frequency | 5kHz |
| Sensitivity | 109dB/W/m |
| Diaphragm Material | Duralumin (V-Shaped) |
| Voice Coil Diameter | 23mm |
| Diaphragm Thickness | 30µm |
| Horn Material | Milled Aluminum |
| Magnetic Material | Alnico |
| Magnet Mass | 0.23kg |
| Flux Strength | 17000 Gauss |
| Total Magnetic Flux | 25000 Maxwell |
| Power Handling | 1W |
| Power Handling (Peak) | 2W |
| Notes | Improved JA-0506 for use as supertweeter. For use with M-0506S stand (¥ 4,000) or M-0506B mounting ring (¥2,700). |