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AF characteristics
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Overall device
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Compander system Sennheiser HDX
AF frequency response 80 – 18,000 Hz
Signal-to-noise ratio
(1 mV, peak deviation)
≥ 115 dBA
Total harmonic distortion (THD) ≤ 0.9 %
Setting range for input sensitivity 48 dB in 6 dB steps
Temperature range -10 °C to +55 °C (14 °F to 131 °F)
Power supply 2 AA batteries, 1,5 V or
BA 2015 accupack
Nominal voltage 3 V battery /
2.4 V rechargeable battery
Power consumption
at nominal voltage
with transmitter switched off
typically 180 mA
≤ 25 μA
Operating time Typically 8 h
Dimensions Approx. Ø 50 x 265 mm
Weight (with batteries) Approx. 450 g
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