Shure Beta 91A
For over two decades Beta Microphones have been the choice of top touring and recording professionals seeking reliable, application-specific performance in demanding live and studio environments. With superior construction, low handling noise and high gain before feedback, Beta Microphones redefine sensitivity and control for expert sound reinforcement. The Beta 91A is a precision-engineered Half-Caridoid Condenser Boundary Microphone. It's two position contour switch maximizes attach and clairty depending on the application. This low-profile microphone with integrated XLR preamplifier is perfect for kick drum and other low frequency applications. The Beta 91A requires no external mounting or accessories for improved control, simple set-up and storage. An updated microphone capsule is tailored for bass-heavy environments to produce a powerful low frequency response, and a new design integrates the preamplifier and XLR connection for easy setup and minimal stage clutter. The Beta 91A combines superior attack and punch for studio-quality sound, even at extremely high sound pressure levels (SPLs). Features: Premier live performance microphone with Shure quality, ruggedness, and reliabilityUniform half-cardioid polar pattern (in the hemisphere above mounting surface) for maximum gain before feedback and rejection of off-axis soundTailored frequency response for kick drums and bass-heavy instrumentsWide dynamic range for use in high SPL environmentsTwo-position contour switch enhances attack and clarityIntegrated preamp and XLR connector reduce stage clutter and provide a quick, secure setupLow profile design requires no external mounting hardwareSteel grille and die-cast metal construction resist wear and abuse
| Model |
Beta 91A |
| Series |
Beta |
| Signal to Noise Ratio |
64.5 dB |
| Frequency Response |
20 to 20,000 Hz |
| Polar Pattern |
other |
| Dynamic Range |
(at 1 kHz) 1000 Ohm load: 121.5 dB; 2500 Ohm load: 125.5 dB |
| Output Impedance |
146 Ohms |
| Power Requirements |
11-52 Vdc phantom power, 5.6 mA |
| Sensitivity |
(at 1 kHz, open circuit voltage) -48.5 dBV/Pa (3.8mV) |
| Product Weight |
Net: 470 g (16.6 oz.) |
Shure Beta 91A
Monitor mixers, personal monitors, phonograph, wireless: One year parts and labor Wired microphones: Two years parts and labor
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