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Miniature Cardioid Drum Microphone
The Shure Beta Microphone Series
BETA 98AMP is a precision-engineered miniature cardioid condenser microphone for professional sound reinforcement and studio recording. The BETA98AMP features an integrated XLR preamplifier with a flexible gooseneck and the A75M Universal Microphone Mount for accurate placement in any configuration of toms, snares, or percussion. An extremely uniform cardioid polar pattern provides excellent gain-before-feedback, off-axis rejection of unwanted noise, and high maximum sound pressure level (SPL).
→ Premier live performance microphone with Shure quality, ruggedness, and reliability→ Uniform cardioid polar pattern for maximum gain before feedback and superior rejection of off-axis sound→ Tailored frequency response shaped for drums and percussion→ Wide dynamic range for use in high SPL environments→ Compact design and integrated preamp reduce stage clutter and ease setup→ Flexible gooseneck for precise placement and easy adjustments→ Enamel coated metal construction and stainless steel inner grille resist wear and abuse
 1 Pa=94 dB SPL THD of microphone preamplifier when applied input signal level is equivalent to cartridge output at specified SPL S/N ratio is the difference between 94 dB SPL and equivalent SPL of self noise, A-weighted All specifications measured with a 48 Vdc phantom power supply. The microphone operates at lower voltages, but with slightly decreased headroom and sensitivity.
| Cartridge Type|| Electret Condenser|
| Polar Pattern|| Cardioid|
| Frequency Response|| 20 to 20,000 Hz|
| Output Impedance @ 1 kHz|| 150 O|
| Sensitivity open circuit voltage, @ 1 kHz, typical|| 50.5 dBV/Pa (4 mV)|
| Maximum SPL 1 kHz at 1% THD|| 2500 O load 157.5 dB; 1000 O load 153 dB|
| Signal-to-Noise Ratio|| 63 dB|
| Dynamic Range @ 1 kHz|| 2500 O load 126.5 dB; 1000 O load 122 dB|
| Clipping Level 20 Hz to 20 kHz, 1% THD|| 2500 O load 12.5 dBV; 1000 O load 7.5 dBV|
| Self Noise equivalent SPL, A-weighted, typical|| 31 dB SPL-A|
| Connector|| Three-pin professional audio (XLR), male, balanced|
| Common Mode Rejection 10 to 100,000 kHz|| <_60 dB|
| Polarity|| Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3|
| Power Requirements|| 1152 V DC phantom power (IEC-61938), 5.5 mA|
| Net Weight|| 130 g (4.6 oz.)|
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Audio Video Supply Inc.
4575 Ruffner St
San Diego, CA 92111
Prices and specifications subject to change without notice.