YAMAHA NS-20M
¥ 35,000 (1 unit, released in October 1983)
Commentary
A compact speaker system developed for the digital audio age.
For the low band, we have adopted a 23-cm unit made of a cone-shaped spruce material known as a material for piano soundboards.
Oxygen-free copper ribbon wire is used for the voice coil and aluminum die-cast is used for the frame.
A tweeter and a super tweeter, both of which use titanium carbonate as the diaphragm material, are used for the middle and high range.
The cabinet has a three way flow stop structure.
Model Rating
| Method | 3-Way, 3-Speaker, Airtight Type, Bookshelf Type |
| Units Used | For Low Band : 23 cm Pure Sprue Scone Type For High Band : 4.7 cmTic Semi-dome Type For Super High Band : 3.0 cmTic Semi-dome Type |
| Playback frequency band | 50 Hz to 40000 Hz |
| Crossover frequency | 2000 Hz, 10000 Hz |
| Output sound pressure level | 91dB |
| Impedance | 6 Ω |
| Allowable input | 80W |
| Music acceptance input | 160W |
| External dimensions | Width 270x Height 410x Depth 255.2 mm |
| Weight | 9.5kg |