SHURE BETA 98AMP/C Инструментален микрофон за перкусионни инструменти

SHURE BETA 98AMP/C Инструментален микрофон за перкусионни инструменти

Инструменталният микрофон съчетава интегриран предусилвател с миниатюрна кондензаторна капсула, изработена за перкусии. В комплекта е включена гъвкава стойка за микрофон A75M за сигурно поставяне в много конфигурации.

General Description

The Shure Beta 98AMP is a compact, high-output, condenser microphone for professional sound reinforcement and studio recording. An extremely uniform cardioid polar pattern provides excellent gain-before-feedback, off-axis rejection of unwanted noise, and performance in high sound pressure level (SPL) environments. The Beta 98AMP features an integrated preamplifier with XLR connection, a flexible gooseneck, and is packaged with the A75M Universal Microphone Mount accessory for precision adjustments and minimal stage clutter. For use with drums, percussion, and other fixed-placement applications.

Features

• 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 resists wear and abuse

Performance Characteristics

• Exceptional low-frequency reproduction
• Extremely high SPL handling
• High output level
• No crossover distortion

General Rules for Use

• Aim the microphone toward the desired sound source; angle unwanted sounds toward its null point.
• Use the fewest amount of microphones as practical to increase the Potential Acoustic Gain and prevent feedback.
• Follow the 3 to 1 Rule by spacing each microphone by at least three times the distance to its source to reduce Phase Cancellation.
• Place microphones as far as possible from reflective surfaces to reduce Comb Filtering.
• When using directional microphones, work closely to the microphone for extra bass response to take advantage of the Proximity Effect.
• Avoid excessive handling to minimize pickup of mechanical noise and vibration.
• Do not cover any part of the microphone grille, as this will adversely affect microphone performance.
• Add a windscreen when using the microphone outdoors.

NOTE: Before each use, make sure the cartridge is tightly secured on the microphone, as vibration and accidental hits with drumsticks may loosen it, resulting in signal loss.

Positioning the Microphone

The flexible gooseneck allows precise adjustments to the microphone without moving the mount.

Note: Excessive twisting or forcing the gooseneck into extreme positions can permanently damage the microphone

Load Impedance

Maximum SPL capability, output clipping level, and dynamic range vary with the input load impedance of the preamplifier to which you connect the microphone. Shure recommends a minimum input load impedance of 1000 Ω. Most modern microphone preamplifiers meet this requirement. Higher impedance results in better performance for these specifications.

Power Requirements

This microphone requires phantom power and performs best with a 48 Vdc supply (IEC61938). However, it will operate with slightly decreased headroom and sensitivity with supplies as low as 11 Vdc.

Most modern mixers provide phantom power. You must use a balanced microphone cable: XLR-to-XLR or XLR-to-TRS.

Specifications:

• Cartridge Type: Electret Condenser
• Polar: Pattern: Cardioid
• Frequency Response: 20 to 20,000 Hz
• Output Impedance: 150 Ω
• Sensitivity - open circuit voltage, @ 1 kHz, typical: –50.5 dBV/Pa[1] (2.5 mV)
• Maximum SPL - 1 kHz at 1% THD[2]:
• 2500 Ω load: 157.5 dB SPL
• 1000 Ω load: 153.0 dB SPL
• Signal-to-Noise Ratio[3]: 63 dB
• Dynamic Range @ 1 kHz:
• 2500 Ω load: 126.5 dB
• 1000 Ω load: 122.0 dB
• Clipping Level @ 1 kHz, 1% THD
• 2500 Ω load: 12.5 dBV
• 1000 Ω load: 7.5 dBV
• Self Noise - equivalent SPL, A-weighted, typical: 31.0 dB SPL-A
• 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: 11–52 V DC[4] phantom power (IEC-61938), 5.5 mA
• Net Weight: 130 g (4.6 oz.)

[1] 1 Pa=94 dB SPL

[2]THD of microphone preamplifier when applied input signal level is equivalent to cartridge output at specified SPL

[3]S/N ratio is the difference between 94 dB SPL and equivalent SPL of self noise, A-weighted

[4]All specifications measured with a 48 Vdc phantom power supply. The microphone operates at lower voltages, but with slightly decreased headroom and sensitivity.