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4.1 Cable cross section
On the basis of the geometry of the room, you can calculate the cable cross section required
with the help of the following table.
For area measuring
4.2 Connecting the induction loop
Connect the ends of the loop wires to the terminals (10) on the back of the amplifier.
Single loop
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.
5.1 Configuring the amplifier
Two audio sources can be connected to the symmetrical XLR jacks (13). If a microphone is
connected, the corresponding jumper must be configured accordingly. If phantom-fed micro-
phones are used, a 40 V phantom voltage can be added.
Input IN3 (12) is exclusively designed for devices with Line level and cannot be configured
with the jumpers.
In the standard configuration, input IN1 is for "microphone" with phantom voltage, input IN2
for "Line IN" without phantom voltage.
14 English
Cable cross section in mm
2,5
70-150 m
2
Double loop
2
4
150-800 m
2
6
> 800 m
2
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