YAMAHA NS-431
¥ 19,500 (1 unit, around 1978)
Commentary
A 2-way bass reflex type speaker system with high efficiency design.
A 20 cm cone type woofer is installed in the low range.
The diaphragm is made of carefully selected cone paper, and the center pole is fitted with a copper cap to reduce strain and suppress the increase in impedance.
Ferrite magnet is used for the magnetic circuit.
A 5-cm dome type tweeter is installed in the high range.
An MP capacitor is used in the network to improve sound quality.
The enclosure has a wood-grain finish and a brown Sa RUNNET with a high acoustic transmission material.
Model Rating
| Method | 2-Way, 2-Speaker, Bass Reflex System, Bookshelf Type |
| Units Used | For low band : 20 cm cone type For High Pass : 5 cm Dome Type |
| Playback frequency band | 50 Hz to 20 kHz |
| Crossover frequency | 3.5kHz |
| Output sound pressure level | 93dB/W/m |
| Impedance | 8 Ω |
| Maximum allowable input | 30W |
| External dimensions | Width 343x Height 540x Depth 282 mm |
| Weight | 10kg |