YAMAHA JA-0571
¥ 19,000 (1 piece, around 1980)
Commentary
This is a dome type tweeter which refined the NS-1000M series tweeter and made it into a single unit.
A lightweight beryllium diaphragm weighing only 30 mg is used for the diaphragm.
In addition, tangential edge is adopted for the edge.
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Model Rating
| Type | Dome type tweeter unit |
| Nominal impedance | 8 Ω |
| Playback frequency band | 2 kHz to 20 kHz |
| Recommended bandwidth | 5 kHz or more |
| Rated input | 7W |
| Max Input | 14W |
| Output sound pressure level | 92dB/W ・ m |
| Diaphragm | Beryllium |
| Voice coil diameter | 23 φ mm |
| Magnet | Ferrite, 0.38 kg |
| Magnetic flux density | 14,500gauss |
| Total flux | 21,000maxwell |
| External dimensions | Diameter 120 mm x height 94 mm |
| Weight | 1.32kg |