Microfon Vocal Beta 87A
Tip produs: microfon | microfon condensator | microfon profesionalProducator: Shure
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Prezentare Microfon Vocal Beta 87A
Highly consistent supercardioid polar pattern provides superior gain-before-feedback
Electronic low-frequency roll-off compensates for proximity effect
Wide dynamic range (117 dB) and low distortion characteristics
Very low susceptibility to RFI and electromagnetic hum
Advanced cartridge shock-mount system absorbs mechanical shocks and reduces handling noise
Built-in pop filter reduces undesirable wind and breath sounds
Legendary Shure quality and reliability
Cartridge Type
Condenser (electret bias)
Frequency Response
50 to 20,000 Hz
Polar Pattern
Supercardioid
Output Impedance
Rated at 150 ohms (100 ohms actual +/- 20%)
Recommended minimum load impedance: 800 ohms
Sensitivity (at 1,000 Hz)
Open Circuit Voltage -52.5 dBV/Pa (2 mV)
(1 Pa = 94 dB SPL)
Clipping Level (at 1,000 Hz)
1000 ohm Load: -6 dBV (0.5 V)
Maximum SPL (at 1,000 Hz)
140.5 dB (0.25% THD, 1000 ohm load)
Self-Noise
(equivalent sound pressure level; measured with true rms voltmeter)
23.5 dB typical, A-weighted
25.5 dB typical, weighted per DIN 45 405
Dynamic Range
117 dB (maximum SPL to A-weighted noise level)
Signal-to-Noise Ratio
70.5 dB at 94 dB SPL (IEC 651)
(S/N ratio is difference between 94 dB SPL and equivalent SPL of self-noise A-weighted.)
Polarity
Positive pressure on diaphragm produces positive voltage on pin 2 relative to pin 3
Power
Phantom Supply Requirement: 11 to 52 Vdc, positive at both pins 2 and 3
Current Drain: 1.0 to 1.2 mA
Connector
Three-pin (XLR) professional audio
Case
Aluminum construction with blue metallic finish, and hardened steel grille with nickel satin chrome plating
Dimensions
See User Guide
Net Weight
207 grams (7.6 oz)
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