AUDIOropa PROLOOP LOSplus Mode D'emploi page 19

2.2 Connecting the induction loop
Connect the ends of the loop wires to the terminals (16) on the rear of the amplifier.
OUT COM
LOOP
2.3 Configuring the amplifier and connecting audio sources
Up to 2 audio sources can be connected to the symmetrical XLR jacks (20).
Input for microphone
or line signal
(e.g. CD-Player or
audio amplifier)
If a phantom-powered microphone is connected to INPUT1 or INPUT2 a 15 V phantom voltage can also be
added with the "Phantom" switch.
An extra amplification for each input separatly can be switched on with the switch "Gain Boost".
To connect a CD-Player or a audio amplifier to the induction loop amplifier the input sensitivity of INPUT1 or IN-
PUT2 can be switched to "LINE"-level with the "MIC/LINE" switch.
In the standard configuration, INPUT2 is configured as „LINE" without phantom voltage and extra amplification.
If you want to alter the standard setting please switch off the amplifier and set the switches on the
desired positions. After setting the switches please switch on the amplifier again.
2.4 Using the priority input (18)
You can use the priority input to connect the induction loop amplifier with a alarm system or a PA-system. The
priority of the priority input is higher than the one of the audio inputs. The signal on the connected induction loop
is replaced with the signal of the priority input if a signal is received at the priority input. Please use the volume
control to set the volume of the audio signal which the priority input sends to the connected induction loop.
PRIORITY
100V INPUT
0
Important note
Put the safety bracket on the priority input to make sure that it is not possible
to touch the priority input.
Please note the following information
• The loop amplifier must be located outside of the loop.
• Twist the cable section between the amplifier and the loop (feed cable to
the loop) to prevent interference.
• Use a suitable measurement device (e.g. ohm meter) to make sure that
the loop doesn't have a short-to-ground (no damage on the insulation of
the loop wiring)!
• The distance from the loop level to the normal listening level should be
approx. 1.20 m to 2.00 m.
5k
10k
Switch for microphone /
line sensitivity
English 19