It is a diaphragm tweeter with integrated edge by pure beryllium. High efficiency and easy to use, yet wide range. A must see if you are looking for a good quality tweeter in the multiamp. Appearance, there are dullness and fine paint peeling. Serial PC1761/PC1762 (Satoshi Yonejima)
Maintenance Information: 2021.5.6 Oscillator Test Good
Accessories: ring
Main Specifications: 35mm Pure Beryllium Diaphragm Playback Frequency Band 5,000 to 45,000 Hz Rated Input 15W Maximum Input 30W Output Sound Pressure Level 107dB Crossover Frequency 5,000Hz More than 8 Ω Mounting Pitch Diameter 98mm (Baffle Use) Dimensions Diameter 80 × D74 mm Weight 1.1 kg/This