The EM Acoustics CDU-1001A is a 1" high-frequency compression driver, purpose-built as a direct replacement for the EMS-61 and EMS-81X loudspeakers. Designed to deliver crystal-clear highs and precise vocal intelligibility, this genuine EM Acoustics component ensures optimal performance and tonal consistency within the system. Whether you're carrying out a repair or routine maintenance, the CDU-1001A guarantees full compatibility, preserving the signature clarity and reliability expected from EM Acoustics professional loudspeakers.