JBL 2405 Ultra-High Frequency Transducer (c1975)
The 2405 is designed for use as the ultra-high frequency driver in a wide range, multi-element loudspeaker system. It features a unique combination of extended frequency response. high efficiency and wide dispersion pattern.
Link to PDF: JBL 2405 Ultra-High Frequency Transducer (c1975)
https://aboutprosound.com/wp-content/uploads/2022/09/JBL-2405-c1975.pdf