Shure BETA-91 Kick Drum Condenser Low Profile Microphone with RPM626 In-line Preamp

Shure BETA-91 Kick Drum Condenser Low Profile Microphone with RPM626 In-line Preamp

The Shure Beta 91 is specifically designed for kick drums and other bass instruments. It combines superior “attack” and “punch” for studio quality sound, even at the extremely high sound pressure levels (SPL) encountered inside a kick drum. Its boundary effect design produces a strong, solid low-end response that has been specifically tailored for heavy bass applications.

Features

• Premier live performance microphone
• Uniform cardioid (hemisphere above mounting surface) pick up pattern for maximum gain and rejection of off axis sound
• Tailored frequency response specifically shaped for kick drums and bass instruments
• Wide dynamic range for use in high sound pressure level (SPL) environments
• Low profile design requires no external mounting hardware
• Steel grille and die-cast metal construction resist wear and abuse
• Furnished with RPM626 preamplifier, TA3F to TA4F cable and zippered storage bag
• Phantom powered
• Shure quality, ruggedness and reliability

Specifications

• Cartridge Type
• Condenser (electret bias)
• Frequency Response
• 20 to 20,000 Hz
• Polar Pattern
"
• Half-cardioid (cardioid in hemisphere above mounting surface)
"
• Output Impedance
• 150 ohms
• Maximum SPL (1 kHz at 1% THD, 1k ohms load)
• 156 dB
• Signal-to-Noise Ratio (referenced at 94 dB SPL at 1 kHz)
• 59.0 dB
• S/N ratio is difference between 94 dB SPL and equivalent SPL of self noise, A-weighted
• Dynamic Range (at 1 kHz, 1 k ohms load)
• 125 dB
• Clipping Level (1 kHz at 0.25% THD, 1k ohms load)
• 2 dBV (1.26 V)
• Polarity
• Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3
• Weight
• Net: 0.382 kg (0.842 lbs)
• Power Requirements
• (48 Vdc ±4 Vdc phantom)

Furnished Accessories

• C98D
• 4.6 m (15 ft) heavy-duty cable
• RPM626
• In-Line Preamplifier (1 piece)