CORAL 777-EX/E/S
777-EX : ¥ 19,000 (around 1979)
777-E : ¥ 16,000 (around 1979)
777-S : ¥ 14,000 (around 1979)
Commentary
MC-type cartridge highly evaluated in Europe and America.
There were 3 variations.
Model Rating
| Type | MC Type Cartridge | ||
| Model Name | 777-EX | 777-E | 777-S |
| Frequency characteristic | 5 Hz to 40 kHz | 10 Hz to 35 kHz | 10 Hz to 30 kHz |
| Output Voltage (50mm/sec.) | 0.3mV | 0.3mV | 0.3mV |
| Channel separation | 34dB | 27dB | 25dB |
| Needle tip | 0.2x0.8 mil Elliptical Needle | 0.2x0.8 mil Elliptical Needle | 0.6mil |
| Needle pressure | 1.8g ~ 2.3g | 1.8g ~ 2.3g | 1.8g ~ 2.3g |
| Compliance | 15x10-6cm/dyne | 13x10-6cm/dyne | 13x10-6cm/dyne |
| Impedance | 6 Ω | 6 Ω | 6 Ω |
| Load impedance | 20 ~ 100 Ω | 20 ~ 100 Ω | 20 ~ 100 Ω |
| Weight | 5.5g | 5.5g | 5.5g |
| Exchange needle | ¥13,000 | ¥11,000 | ¥9,600 |