Standard Type Magnetic Transducer MT9671 Series Specifications: Parameters Units MT9671A01NP Min Sound Pressure Level at 10cm Rated Voltage Operating Voltage Resonance Frequency Max Operating Current Coil Resistance Operating Temperature Case Material Weight dBA Vo-p Vo-p Hz mA °C g 80 1.5 1-2 3100 80 5.5 1 -20 - +60 Noryl 0.6 Unit: mm • Tolerance: 0.5mm Value applying rated voltage (1/2 duty square wave, resonance frequency) MT1238 Series Specifications: Parameters Units MT1238A01NP MT1238B01NP Min Sound Pressure Level at 10cm Rated Voltage Operating Voltage Resonance Frequency Max Operating Current Coil Resistance Operating Temperature Case Material Weight dBA Vo-p Vo-p Hz mA °C g 75 1.5 1-3 2048 40 16 4 -20 - +70 Noryl 2.0 75 1.5 1-3 2400 40 16 4 -20 - +70 Noryl 2.0 Unit: mm • Tolerance: 0.5mm Value applying rated voltage (1/2 duty square wave, resonance frequency) MT1255 Series Specifications: Parameters Units MT1255A01NP Min Sound Pressure Level at 10cm Rated Voltage Operating Voltage Resonance Frequency Max Operating Current Coil Resistance Operating Temperature Case Material Weight dBA Vo-p Vo-p Hz mA °C g 75 1.5 1-3 2048 30 16 2 -20 - +70 Noryl 2.0 Value applying rated voltage (1/2 duty square wave, resonance frequency) www.hk-sound.com Unit: mm • Tolerance: 0.5mm P.8