YAMAHA NS-500Ma
¥ 59,800 (1 unit, around 1986)
Commentary
In order to make the NS 500 m compatible with digital sources, the quality of the speaker system has been improved through a complete review.
A 30 cm unit is used for the low band.
This unit uses a cone made by heat-pressing two sheets of material woven with long-fiber carbon at a 45 ° angle.
A 10 cm unit is used for the middle area, and TiC (titanium carbonate) material is used for the center dome. It is driven by an edgewise wound voice coil made of OFC ribbon wire and strontium magnet.
A unit with a 3 cm pure beryllium dome is used for the high range.
Uses copper-clad aluminum ribbon wire edgewise wound coil and φ 85 mm strontium magnet.
Each unit uses an aluminum die-cast frame with a diamond cut finish and is fixed to a robust baffle to prevent unwanted resonance.
BP and MP capacitors are used for each band in the network, and OFC wire is used for all wires.
The enclosure is three way clasp.
Model Rating
| Method | 3-Way, 3-Speaker, Airtight Type, Bookshelf Type |
| Units Used | For low band : 30 cm cone type For Middle Area : 10 cm Composite Type For High Pass : 3 cm Dome Type |
| Playback frequency band | 40 Hz to 20000 Hz |
| Crossover frequency | 700 Hz, 4000 Hz (12dB/oct.) |
| Output sound pressure level | 91.5dB/W/m |
| Impedance | 6 Ω |
| Allowable input | 100W |
| Music acceptance input | 200W |
| External dimensions | Width 374x Height 678x Depth 324.5 mm |
| Weight | 23.5kg |