NS-590
| Brand | Yamaha |
| Manufacturer | Nippon Gakki Co. Ltd. |
| Function | Speaker |
| Produced | 1978 |
| Country | Japan |
| Form Factor | Bookshelf / Stand Mounted |
| Signal Path | Passive Hardware |
| Dimensions | 37 × 66.5 × 31.6 cm (W × H × D) |
| Weight | 23.5kg |
| Frequency Response | 40Hz-20kHz |
| Treble | 3cm Beryllium Dome (Yamaha JA-0522) |
| Midrange | 12cm Paper Cone (Yamaha JA-1204) |
| Bass | 12" Paper Cone (Yamaha JA-3064) |
| Sensitivity | 91dB/W/m |
| Impedance (Nominal) | 8Ω |
| Crossover Frequencies | 700Hz, 6kHz |
| Crossover Slope | 12dB/Oct (Second Order) |
| Enclosure Type | Sealed |
| Enclosure Construction | Particleboard |
| Finish | Oak |