Shure Beta 91

Kondenzátorový mikrofon  

Kondenzátorový mikrofon pro basové nástroje a velký buben.

Type

Electret Condenser

Frequency Response 20 to 20,000 Hz

Polar Pattern

Half-cardioid (cardioid in hemisphere above mounting surface)

Impedance 146 Ohms

Sensitivity (at 1 kHz, open circuit voltage) -48.5 dBV/Pa (3.8mV) 1 Pascal=94 dB SPL

Maximum SPL (1 kHz at 1% THD) 1000 Ohm load: 151 dB, 2500 Ohm load: 155 dB

Signal-to-Noise Ratio (referenced at 94 dB SPL at 1 kHz) 64 dB

S/N ratio is difference between 94 dB SPL and equivalent SPL of self noise, A-weighted

Dynamic Range (at 1 kHz)

• 1000 Ohm load: 121.5 dB
• 2500 Ohm load: 125.5 dB

Common Mode Rejection (20 Hz to 20 kHz) > 55 dB

Clipping Level (20Hz-20 kHz at 1% THD) 1000 Ohm load: 7.50 dBV, 2500 Ohm load: 12.5 dBV

THD of microphone preamplifier when applied input signal is equivalent to cartridge output at specified SPL

Self Noise (typical, equivalent SPL, A-weighted) 29.5 dB SPL-A

Polarity

Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3

Weight

Net: 470 g (16.6 oz.)

Frequency Contour Switch 7 dB of attenuation centered at 400 kHz

Connector

Three-pin professional audio (XLR), male, balanced

Power Requirements 11-52 Vdc phantom power, 5.6 mA

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