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Shure Beta 91 Bass Drum Microphone
Shure Beta 91 is a microphone unsurpassed for kick drums and other bass instruments. The Beta 91 provides both superior attack and punch, even at extremely high SPLs and a solid, strong low-end response. The Shure Beta 91's cardioid pattern provides outstanding gain-before-feedback and rejection of unwanted sound, and its low-profile design eliminates the need for external mounting hardware. Features Frequency response shaped specifically for kick drums and other instruments Wide dynamic range for use in high SPL environments Low-profile design requires no external mounting hardware Detachable cable for easy storage Legendary Shure quality, ruggedness, and reliability Specification Type: Cardioid condenser (electret bias) Frequency Response: 20Hz-20kHz Polar Pattern: Half-cardioid (cardioid in hemisphere above mounting surface) Output Level (at 1,000 Hz): Open Circuit Voltage: -59 dBV/Pa* (1.1 mV) typical - *1 Pa = 94dB SPL Maximum SPL: (20Hz-20kHz, less than 1% THD), 2.5 kilohm load: 160dB, 1 kilohm load: 156dB Preamplifier Output Clipping Level: (20Hz-20kHz, less than 1% THD*), 2.5 kilohm load: 6 dBV (2.0 V), 1 kilohm load: 2 dBV (1.26 V) Dynamic Range: (20Hz-20kHz, less than 1% THD, 2.5 kilohm load), 125dB (max SPL minus A-weighted noise) Output Noise: 35dB SPL (typical), A-weighted Output Impedance: 150 ohms (actual) Polarity: Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3 Power: Phantom Power: 48 Vdc +/- 4 Vdc, positive pins 2 and 3 Electromagnetic Hum Pickup: -7.5dB equivalent SPL in 1 mOe field (60Hz) Cable: 4.6 m (15 ft) heavy-duty, two-conductor shielded, TA4F to TA3F connectors Case: Dimensions: Net Weight |




















