Gear Hunter

SHURE BETA91 (v1)

Description

Used Shure Beta91 (v1) comes with original carrying bag, preamp, and cable.

The Shure Beta 91 is designed for use with kick drums, as well as other traditional low-frequency applications including piano. Featuring a special design microphone capsule, integrated preamplifier, and XLR connection, Beta 91 offers a strong low-frequency response and is specifically tailored for bass frequency applications. The Beta 91 combines superior attack and punch for studio-quality sound, even at extremely high sound pressure levels (SPL).

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