ONKYO M-1
¥ 29,800 (1 unit, around 1977)
Commentary
A speaker system designed to reproduce human voices.
A 25 cm cone type woofer W-2530A is mounted in the low range.
The diaphragm uses a newly manufactured sheet cone with multi-corrugation, which is strong for large amplitude and has succeeded in weight reduction. This diaphragm is driven by a 50 φ long voice coil and a 120 φ x60 φ x15mm magnetic circuit, which achieves 60W input resistance and 93dB/W/m high efficiency despite being small.
TW-410A 4 cm cone tweeter is installed in the high range.
This unit uses a 0.15g lightweight cone because it is m designed to match the woofer.
Equipped with a 3-step mode selector.
The enclosure uses a bass reflex system.
Model Rating
| Method | 2-Way, 2-Speaker, Bass Reflex System, Bookshelf Type |
| Units Used | For Low Range : 25 cm Cone Type (W-2530A) For High Range : 4 cm Cone Type (TW-410A) |
| Playback frequency band | 35 Hz to 20 kHz |
| Max Input | 60W |
| Impedance | 6 Ω |
| Output sound pressure | 93dB/W/m |
| Maximum output sound pressure level | 111dB/m |
| Crossover frequency | 2.5kHz |
| Cabinet internal volume | 41 liters |
| Level control | 3-step mode selector |
| External dimensions | Width 322x Height 578x Depth 330 mm |
| Weight | 14kg |