Shure RPM181BI Bidirectional Replacement Capsule for BETA 181 Microphone

Shure RPM181BI Bidirectional Replacement Capsule for BETA 181 Microphone
Camcor Item No.	136017622
Mfg. Part No.	RPM181/BI

Cartridge Type	Electret Condenser
Polar Pattern	Bidirectional
Frequency Response	20 to 20,000 Hz
Output Impedance	110 O
Sensitivity open circuit voltage, @ 1 kHz, typical	–51.0 dBV/Pa (2.6 mV
Maximum SPL	1 kHz at 1% THD
2500 O load	156.0 dB SPL
1000 O load	153.5 dB SPL dB SPL
Signal-to-Noise Ratio	71.0 dB
Dynamic Range	2500 O load: 133.0 dB dB 1000 O load: 130.5 dB
Clipping Level @ 1 kHz, 1% THD	2500 O load: 10.5 dBV 1000 O load: 7.5 dBV
Self Noise (equivalent SPL,A-weighted, typical)	22.5 dB SPL-A
Common Mode Rejection (20 to 20,000 kHz)	±55 dB
Power Requirements	11–52 V DC phantom power (IEC-61938): 2.4 mA, maximum
Capsule width	1.36" (34.54mm)