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Beta 27 Instrument Microphone |
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Product Code: Beta 27 Instrument Microphone |
The Beta 27 side-address
condenser microphone is precision engineered for professional
sound reinforcement and project studio recording applications.
Its 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.
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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 noise.
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Specifications |
- Type: Condenser (externally biased)
- Frequency Response: 20 to 20,000 Hz
- Polar Pattern: Supercardioid
- Impedance: 160 Ohms
- Sensitivity (at 1 kHz, open circuit voltage): -37 dBV/Pa
1 Pascal=94 dB SPL
- Maximum SPL (1 kHz at 1% THD):
1000 Ohm load: 134 dB (148 dB, Pad on)
2500 Ohm 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 Ohm load: 125.5 dB
2500 Ohm load: 131.5 dB
- Common Mode Rejection (20 Hz to 20 kHz): > 50 dB
- Clipping Level (20Hz-20 kHz at 1% THD):
1000 Ohm load: 2.0 dBV
2500 Ohm 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
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