8 TECHNICAL DATA
8.1 System Electrical and Electro-Acoustical Characteristics
8.1.1 The CPSU
Mains voltage : 100 - 240 Vac, ± 10%, 50/60 Hz
Current consumption : max. 0.9 A (100 Vac) - 0.3 A (240 Vac)
DC supply to contribution units : 24V +/- 1V (current limited)
Line, telephone coupler and insertion in/outputs (unbalanced)
Input sensitivity : -14 dBV/ +11dBV
(nominal/maximum)
Input impedance : 33 kΩ
Output level : -14 dBV/ +11dBV
(nominal/maximum)
Output impedance : 500 Ω
Recorder in/output (unbalanced) - mono
input sensitivity : - 20 dBV/ + 5 dBV
(nominal/maximum)
input sensitivity adjustment : +0 / -20 dB
input impedance : 47 kΩ (for L and R channel)
output level : - 20 dBV/ + 5 dBV
(nominal/maximum)
output impedance : 500 Ω
External microphone input (balanced)
input sensitivity : - 56 dBV
input sensitivity adjustment : +6 dB / -6 dB
phantom supply : 12V +/- 1V, 2x680 Ω (+/-2%)
Monitor loudspeaker
Output level at 0.5 m : 72 dB SPL/ 82 dB SPL
(nominal/maximum)
Frequency response : 320 Hz ... 10 kHz (-10 dB, ref. 1kHz)
Impedance : 25 Ω
Volume control : 50 dB attenuation range
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