Shure
BETA Series Half-Cardioid Condenser Microphone
SKU: 658612 · Model: BETA 91A
$355.00
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- •Uniform half-cardioid polar pattern for maximum gain-before-feedback and rejection of off-axis sound
- •Precision-engineered low-profile design features integrated preamplifier and XLR connector to maximize setup efficiency while minimizing stage clutter
- •Frequency response tailored for kick drum/low frequency applications with a wide dynamic range for use in high SPL environments
- •Two-position contour switch to maximize attack and clarity depending on application: select the flat response setting for natural sound in most applications or the “low-mid scoop” setting for a strong low frequency “punch” with plenty of higher frequency attack
- •Requires no external mounting or accessories for ease of use and storage
- •Furnished with zipper pouch
Weight: 1.13 lbsDims: 9.25″ × 4.5″ × 3″
Product Details
The Shure Beta 91A is designed for use with kick drums, as well as other traditional low-frequency applications including piano. Featuring an updated microphone capsule, integrated preamplifier, and XLR connection, Beta 91A offers a strong low-frequency response and is specifically tailored for bass frequency applications. The Beta 91A combines superior attack and punch for studio-quality sound, even at extremely high sound pressure levels (SPL).<br/><br/>Type<br/>Electret Condenser<br/><br/>Frequency Response<br/>20 to 20,000 Hz<br/><br/>Polar Pattern<br/>Half-cardioid (cardioid in hemisphere above mounting surface)<br/><br/>Impedance<br/>146 Ohms<br/><br/>Sensitivity (at 1 kHz, open circuit voltage)<br/>-48.5 dBV/Pa (3.8mV)<br/>1 Pascal=94 dB SPL<br/><br/>Maximum SPL (1 kHz at 1% THD)<br/>1000 Ohm load: 151 dB, 2500 Ohm load: 155 dB<br/><br/>Signal-to-Noise Ratio (referenced at 94 dB SPL at 1 kHz)<br/>64 dB<br/>S/N ratio is difference between 94 dB SPL and equivalent SPL of self noise, A-weighted<br/><br/>Dynamic Range (at 1 kHz)<br/>1000 Ohm load: 121.5 dB<br/>2500 Ohm load: 125.5 dB<br/><br/>Common Mode Rejection (20 Hz to 20 kHz)<br/>> 55 dB<br/><br/>Clipping Level (20Hz-20 kHz at 1% THD)<br/>1000 Ohm load: 7.50 dBV, 2500 Ohm load: 12.5 dBV<br/>THD of microphone preamplifier when applied input signal is equivalent to cartridge output at specified SPL<br/><br/>Self Noise (typical, equivalent SPL, A-weighted)<br/>29.5 dB SPL-A<br/><br/>Polarity<br/>Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3<br/><br/>Weight<br/>Net: 470 g (16.6 oz.)<br/><br/>Frequency Contour Switch<br/>7 dB of attenuation centered at 400 kHz<br/><br/>Connector<br/>Three-pin professional audio (XLR), male, balanced<br/><br/>Power Requirements<br/>11-52 Vdc phantom power, 5.6 mA<br/><br/>