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TH-650
Applicable Drivers TU-631, TU-631M, TU-651, TU-651M Sound Pressure Level 110 dB (1 W, 1 m) (When operated with a driver.) Frequency Response 200 Hz – 6 kHz (When operated with a driver.) Dust/Water Protection IP65 (When operated with a driver.) Driver Coupling 1 – 3/8 18 threads (inch screw) Operating
TH-660
Applicable Drivers TU-631, TU-631M, TU-651, TU-651M Sensitivity 110 dB (1 W, 1 m) (When operated with a driver.) Frequency Response 200 Hz – 6 kHz (When operated with a driver.) Dust/Water Protection IP65 (When operated with a driver.) Driver Coupling 1 – 3/8 18 threads (inch screw) Operating Temperature -20