Beta Microphones have been the choice of top touring and recording professionals who demand the accurate reproduction of fine details, sensitivity and control. The precision-engineered Beta 27 builds on this legacy by providing the only large diaphragm side-address supercardioid condenser microphone suitable for demanding acoustic environments.

Boasting a low-mass, externally-biased, ultra-thin 24 karat gold-layered Mylar diaphragm to deliver a superior transient response, the Beta 27 also includes a three-position switchable low-frequency filter to reduce unwanted low frequencies, an internal pop filter constructed with three separate mesh layers, and gold-plated internal and external connectors.

The Beta 27 promises natural reproduction even at high SPLs partially thanks to the inclusion of a -15 dB switchable attenuator, lending it to wide array of potential applications. Likely sources for the model will include guitar and bass amplifiers, drum and percussion overheads, and miking pianos and horns. The mic’s combination of a supercardioid polar pattern and flat frequency response provides strong off-axis rejection, while its polar pattern is designed to ensure high-gain before feedback.

• Flat frequency response and low self noise that provide unerring performance in demanding environments
• A tight supercardioid pattern that ensures high gain-before-feedback and maximum isolation from other sound sources
• Superior transient response from a low-mass, 1" externally-biased, ultra-thin 24 Karat gold-layered Mylar® diaphragm
• 3-position switchable low-frequency filter that helps reduce unwanted background noise
• -15 dB switchable attenuator that handles extremely high SPLs with ease
• Internal pop filter with three separate mesh layers reduces wind and breath noise

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

Applications

• Studio Vocals
• Acoustic Guitar
• Acoustic Bass
• Piano/Organ
• Percussion
• Cymbals
• Woodwinds
• Brass/Saxophone
• Orchestra/Strings
• Studio Ensemble