Shure

BETA Series Large-Diaphragm Side-Address Instrument Microphone

Brand: Shure
Model: BETA27
UPC: 042406180375
-15 dB switchable attenuator handles extremely high SPLs with ease
3-position switchable low-frequency filter helps reduce unwanted background noise or counteract proximity effect for consistent, extended lowend
Flat, neutral frequency response for natural reproduction on stage or in the studio
Internal pop filter with three separate mesh layers reduces wind and breath noise
Premium electronic components and gold-plated internal and external connectors
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
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Product Properties

  • Capsule Type
  • Condenser
  • L/C Switch
  • 3-way
  • Pad
  • 15dB
  • Product Type
  • Instrument Microphone

Description:

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.

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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