Description

The BETA27 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 Ω

Sensitivity

(at 1 kHz, open circuit voltage)

−37 dBV/Pa

1 Pascal=94 dB SPL

Maximum SPL

(1 kHz at 1% THD)

1000 Ω load: 134 dB (148 dB, Pad on)

2500 Ω 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 Ω load: 125.5 dB

2500 Ω load: 131.5 dB

Common Mode Rejection

(20 Hz to 20 kHz) > 50 dB

Clipping Level

(20Hz-20 kHz at 1% THD)

1000 Ω load: 2.0 dBV

2500 Ω 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