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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).
Shure Beta 91A Features:- 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
| Shure Beta 91A Specifications: |
|---|
| 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 |
| Shure Beta 91A System Requirement: |
|---|
| Power Requirements |
| 11-52 Vdc phantom power, 5.6 mA |
Warranty Information
| Product: | Period: |
| Shure Beta 91A | 1 Year |
Package Contents
-
- (1) Shure Beta 91A Microphone
- (1) Carrying Pouch
- (1) Shure Wire Wrap
- (1) User Manual
