CORAL 8L-50
¥ 4,200 (1 unit, around 1965)
Commentary
20 cm cone type woofer unit of Coral L50 series (Pervection series).
The L50 series uses a skybar edge to achieve low fo.
Alnico magnet is used for the magnetic circuit.
The プロミネントリング is included.
It seems that it was 16 Ω around 1965, but 8 Ω was sold around 1970 which is the latter period.
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Model Rating
| Method | 20 cm cone type woofer unit |
| Playback frequency band | Fo ~ 4 kHz |
| fo | 37 Hz to 53 Hz |
| Sound pressure level | 98dB |
| Input | 15W |
| Impedance | 16 Ω (Initial) 8 Ω (Later Stage) |
| Effective mass of vibration system | 14g |
| Qo | 0.53 |
| Total flux | 120,000maxwell |
| Weight | 2.3kg |