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).

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

Beta 52A Dynamic Kick Drum Microphone

The Shure Beta 52®A is a high output dynamic microphone with a tailored frequency response designed specifically for kick drums and other bass instruments. It provides superb attack and "punch", and delivers studio quality sound even at extremely high sound pressure levels.

The Beta 52A features a modified supercardioid pattern throughout its frequency range to insure high gain-before-feedback and excellent rejection of unwanted sound. A built in dynamic locking stand adapter with an integral XLR connector simplifies installation, particularly if the microphone is to be placed inside a kick drum. The stand adapter keeps the microphone position fixed and resists slipping, even when subjected to sharp blows and strong vibrations. A hardened steel mesh grille protects the Beta 52A from the abuse and wear associated with touring.

Shure Beta 52A Dynamic Mic Features:

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

Power Requirements

11-52 Vdc phantom power, 5.6 mA