GOTO UNIT SG-555DX
¥ 238,000 (1 unit, after February 1978)
¥ 258,000 (1 unit, after May 1979))
Commentary
Mid-range driver unit using titanium diaphragm.
Uses Mylar (FRP) edge for the edge part.
The magnetic circuit uses a 140 mm φ magnet that uses a large amount of permendur.
Model Rating
| Method | Driver Unit for Middle Range |
| Music power | 5W |
| Impedance | 8 Ω ~ 16 Ω |
| Output sound pressure level | 116dB |
| Playback frequency band | 100 Hz to 8 kHz |
| Total flux | 1,100,000maxwell |
| Magnetic flux density | 24,000gauss |
| Optimal crossover | 200 Hz to 4 kHz |
| Gap system | Permendur |
| Horn | S-Series |
| Diaphragm | Titanium Dome, Mylar FRP Edge |
| External dimensions | Diameter 140x Depth 130 mm |