Rare mid-low range compression driver unit. The diaphragm diameter is enlarged to 57 mm and a large ring magnet with a 60 mm pie is adopted. The magnetic gap uses high-grade materials such as permenjoules to achieve a profound and clear sound quality. The exterior has floating rust and thread scratches (Satoshi Yonejima)
Maintenance info: 2022.7.8 Oscillator check Good
Accessories: No accessories
Main specifications: Driver frequency for medium tones 80 to 6,000 Hz Recommended crossover 150Hz/4,000 Hz Impedance 8Ω Sound pressure 116dB Titanium diaphragm mylar edge adopted Company B Compatible with series horns 13kg