CORAL 4F-1B/4F-1W/4F-1R
¥ 3,000 (1 unit, around 1985)
Commentary
10 cm cone type full-range unit with selectable color variations.
The diaphragm comes in 3 color variations and can be selected according to your preference.
4F-1B is black, 4F-1W is white, and 4F-1R is red.
There were two variations of impedance.
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Model Rating
| Type | 10 cm cone type full range speaker |
| Playback frequency band | 70 Hz to 20 kHz |
| Lowest resonance frequency (fo) | 70Hz |
| Output sound pressure level | 92dB/W/m |
| Program input | 50W |
| Impedance | 4 Ω, 8 Ω |
| Effective vibration radius a | 4.55cm |
| Effective mass of vibration system mo | 3.1g |
| Qo | 0.37 |
| Magnetic flux density | 12,000gauss |
| Total flux | 70,000maxwell |
| Weight | 0.6kg |
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