Talkback Limiter Amplifier U 674
The Talkback Limiter Amplifier U 674 amplifies the output level of the talkback microphone to the nominal studio level +6 dBm. Sound overshooting of the talkback announcement is prevented by means of a limiter integrated in the amplifier.
Its outstanding features are:
-Talkback Limiter Amplifier U 674
The Talkback Limiter Amplifier U 674 amplifies the output level of the talkback microphone to the nominal studio level +6 dBm.
Sound overshooting of the talkback announcement is prevented by means of a limiter integrated in the amplifier.
Its outstanding features are:
- Input level adaptable to different microphones
- Integrated power supply for electret microphone
- Click-free limiter with more than 30 dB range
- Short attack time of limiter. typical 1 ms
- Decay time adjustable
- Input and output balanced and floating
- Output level + 6 dBm. adjustable to +10 dBm
- Wide frequency range: 40 Hz 15 kHz
- Built-in high pass filter: -3 dB at 140 Hz. -22 dB at 40 Hz, bridgeable at connection strip
- Built-in low pass filter for frequencies higher than 20 kHz
- Insertion facility
- Switch—off relay for AF output
- Low space requirements (40/95/117 mm) dannercassette B1
- Power supply: 24 V DC
Optional versions with built-in electret microphone or with buill—in swan-neck microphone
Technical Data | dBm 0.775 V
Dimensions (W/H/D) 40/95/117 mm
Design plug-in module B 1
Weight 400 g
Connection 32-pin. multipin connector acc. to DIN 41612
Fitting 32-pin. socket acc. to DIN 41 612
Power supply
Nominal operating voltage 24 V DC
Operating voltage range 21,6 V -28 V DC
Static current (without relay, 24 V) ≤16 mA
Maximum current (with relay. 24 V, L-out = +10 dBm) ≤30 mA
Current consumption relay (24 V) ≤ 10 mA
Input data
Input balanced. floating
Input impedance ≥600 Ohms
Nominal input level -64 dBm
Max‘ input level -20 dBm
Input common mode rejection ratio (CMRR) at 15 kHz (IRT 3/5) ≥60 dB
English
Deutsch