Shure BETA54 - Manual (Page 12)

10
English
S p e c i f i c a t i o n s
BETA 53 BETA 54
Specifi cation Wired Wireless Wired Wireless
Type Condenser (electret bias) Condenser (electret bias)
Frequency Response 20Hz to 20KHz (see page 52) 50Hz to 20KHz (see page 52)
Polar Pattern Omnidirectional (see page 52) Supercardioid (see page 52)
Output Noise (equivalent
dBSPL, A-weighted) 39.0 dB typical; 42.0 dB maximum 39.0 dB typical; 42.0 dB maximum
Signal-to-Noise Ratio 55 dB at 94 dB SPL 55.0 dB at 94 dBSPL
Recommended Minimum Input
Impedance >1 kΩ 20 kΩ >1 kΩ 20 kΩ
Preamp Output Impedance 136Ω 136Ω
Output Level, open circuit, ref.
1v/Pa at 1 kHz -50.0 ± 3.0dB
3.16mV -54.0 ± 3.0dB
2.0mV -52.0 ± 3.0dB
2.51mV -56.0 ± 3.0dB
1.58mV
Maximum Sound Pressure
Level 147 dBSPL at 1% THD/1 kΩ load 142 dBSPL at 1% THD/20 kΩ load 149 dBSPL at 1% THD/1 kΩ load 144 dBSPL at 1% THD/20 kΩ load
Dynamic Range 108 dB (max. SPL with 1k load, minus
typical A-wt. noise) 103 dB (max. SPL with 20k load,
minus typical A-wt. noise) 110 dB (max. SPL with 1k load, minus
typical A-wt. noise) 105 dB (max. SPL with 20k load,
minus typical A-wt. noise)
Current Drain 4.6 mA (preamp and microphone) 60-130 μA (microphone only) 4.6 mA (preamp and microphone) 60-130 μA (microphone only)
Output Polarity
Positive pressure on the
diaphragm produces a positive
voltage at: Pin 2 relative to pin 3 at the output
connector of the preamp Pin 3 (black lead) relative to pin 1
(shield lead) at the output connector
of the microphone Pin 2 relative to pin 3 at the output
connector of the preamp Pin 3 (black lead) relative to pin 1
(shield lead) at the output connector
of the microphone
Power Requirements Phantom power; 11 to 52 Vdc positive
on pins 2 and 3, return on pin 1 (ground) +5 Vdc on pin 2, return on pin 1 (ground) Phantom power; 11 to 52 Vdc positive
on pins 2 and 3, return on pin 1 (ground) +5 Vdc on pin 2, return on pin 1 (ground)
Net Weight 135.35 g (4.75 oz.)
microphone and in-line preamp 35.35 g (1.25 oz.)
microphone only 135.35 g (4.75 oz.)
microphone and in-line preamp 35.35 g (1.25 oz.)
microphone only
Cable 1.5 m (5 ft.), small-diameter, shielded, with mini 4-pin connector (TA4F)