
Shure : BETA-27
Description
The Shure Beta Microphone Series
BETA 27 side-address condenser microphone is precision engineered for professional sound reinforcement and project studio recording applications. The BETA27 flat frequency response and low self-noise provide unerring performance in demanding environments. A tight supercardioid pattern ensures high gain-before-feedback and maximum isolation from other sound sources.
Features
→ Supercardioid polar pattern specifically targets the sound source consistently with greatly minimized bleed from off-axis sound sources→ Tailored for superior transient response from a low-mass, 1” externally-biased, ultra-thin 24 Karat gold-layered Mylar® diaphragm→ Flat, neutral frequency response for natural reproduction on stage or in the studio→ 3-position switchable low-frequency filter helps reduce unwanted background noise or counteract proximity effect for consistent, extended lowend→ -15 dB switchable attenuator handles extremely high SPLs with ease→ Premium electronic components and gold-plated internal and external connectors→ Internal pop filter with three separate mesh layers reduces wind and breath noiseSpecifications
Type | Condenser (externally biased) |
Frequency Response | 20 to 20,000 Hz |
Polar Pattern | Supercardioid |
Impedance | 160 O |
Sensitivity (at 1 kHz, open circuit voltage) | -37 dBV/Pa, 1 Pascal=94 dB SPL |
Maximum SPL (1 kHz at 1% THD) | 1000 O load: 134 dB (148 dB, Pad on); 2500 O load: 140 dB (154 dB, Pad on) |
Signal-to-Noise Ratio (referenced at 94 dB SPL at 1 kHz) | 85.5 dB; S/N ratio is difference between 94 dB SPL and equivalent SPL of self noise, A-weighted |
Dynamic Range (at 1 kHz) | 1000 O load: 125.5 dB; 2500 O load: 131.5 dB |
Common Mode Rejection (20 Hz to 20 kHz) | > 50 dB |
Clipping Level (20Hz-20 kHz at 1% THD) | 1000 O load: 2.0 dBV; 2500 O load: 8.5 dBV; THD of microphone preamplifier when applied input signal is equivalent to cartridge output at specified SPL |
Self Noise (typical, equivalent SPL, A-weighted) | 8.5 dB |
Polarity | Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3 |
Weight | Net 428 g (15.1 oz.) |
Switch | Attenuator= -15 dB; Low Frequency Response= flat; -6 dB/octave below 115 Hz; -18 dB/octave below 80 Hz |
Connector | Three-pin professional audio (XLR), male |
Power Requirements | 48 Vdc phantom, 5.6 mA |