Shure BETA 91A
Shure BETA 91A
The Shure BETA 91A is designed for miking kick drums and other low-frequency sound sources, including pianos. Thanks to its modernised microphone capsule, integrated preamplifier and XLR connection, it offers a strong low-frequency response and is specially adapted for bass applications. It provides excellent attack and punch, achieving studio-quality sound even at extremely high sound pressure levels. The uniform half-cardioid polar pattern ensures maximum gain-before-feedback and off-axis sound rejection. The precisely engineered low-profile design with an integrated preamplifier and XLR connector allows for efficient setup and minimal stage clutter.
Desktop
Microphone Type
Condenser (Electret)
Microphone Principle
Directional (Cardioid)
Polar Pattern
20–20,000Hz
Frequency Range
Key Features of the Shure BETA 91A Microphone
- Half-cardioid polar pattern for high gain without feedback
- Low-profile design with integrated preamplifier and XLR connector
- Optimised frequency response for kick drums and low-frequency applications
- Wide dynamic range for use at high sound pressure levels (SPL)
- Two-position contour switch (flat / low-mid scoop) to customise the sound
- Pronounced bass 'punch' and clean attack
- No need for external mounts or accessories
- Easy to use and store
- Supplied with a zip-up pouch
- Suitable for kick drums, pianos and other bass instruments
- Integrated design for quick and tidy setup
Suitable for Bass Instruments
Low-Profile Kick Drum Microphone for Maximum Attack and Clarity
The frequency response is optimised for kick drums and low-frequency applications with a wide dynamic range for use in high sound pressure level (SPL) environments. A two-position contour switch provides maximum punch and clarity depending on the application: use the 'flat' setting for a natural sound in most applications, or the 'low-mid scoop' for a strong bass 'punch' with plenty of high-frequency attack. It requires no external mounts or accessories, making it easy to use and store.
Technical Specifications
- Impedance: 146 Ohm
- Weight: 470g
- Power: Phantom
- Dimensions: 95 × 139 × 203mm (L × W × H)
Package Contents
- Shure BETA 91A Microphone
- Storage Pouch
Microphone Principle
Dynamic microphones are suitable for open-air performances, live broadcasts, music production, etc. They use a magnet and a moving coil to capture sound.
Condenser microphones are mainly used for studio purposes. They have higher sensitivity and lower noise. They must be powered separately.
Frequency Range
The frequency range indicates the range of frequencies that the microphone records. The wider the range, the more sounds it can capture.
Low frequencies (e.g., 20–200Hz): Bass, the deepest notes of instruments (double bass, kick drum) and male voices.
Mid frequencies (e.g., 200–3,000Hz): The body of instruments, the foundation of the voice where the ear is most sensitive, important for speech intelligibility.
High frequencies (e.g., 3,000–14,000Hz): Treble, details, sibilance and the 'sheen' of the sound.
'Air' band (above 14,000Hz): Gives recordings a sense of expensive, super-high-quality sound and space.
Sensitivity
Microphone sensitivity is the ratio of output voltage to acoustic pressure. It expresses how loud a signal the microphone produces at a given acoustic pressure; higher sensitivity means a stronger voltage and is suitable for quiet studios, while lower sensitivity is better for noisy environments as it amplifies less unnecessary background noise.
Specifications
Microphone characteristics
Power Supply
Features
Dimensions
Weight
Specifications can be changed without notice. Images are for illustrative purposes only.
