HumanTechnik PRO LOOP C A-4246 Mode D'emploi page 13

3.2 PRO LOOP C loop amplifier performance features
• For areas up to 170 m
• 11 A RMS output power
• Short-circuit-proof
• Automatic reset for the fuse
• 2 programmable, symmetrical XLR inputs and 1 cinch Line IN input
• Line IN or microphone IN with phantom voltage can be adjusted separately for Line IN 1
and 2
• Very safe thanks to the AGC controlled by output voltage and power, which reduces
problems with acoustic feedback
• Earphones and Line OUT jack
• Treble control to compensate for treble loss due to reinforcements in walls and floors
4. Installation
This device operates with a dangerous voltage of 230 V. Never
attempt to open the device yourself and never insert anything into
the air vents! You could receive a severe electrical shock!
Tips
1. Before beginning to install the device, you should be sure to check the
area for any magnetic interference. Such interference can have a nega-
tive affect on the operation of the device or make it impossible alto-
gether. Interference can be caused by transformers, power lines,
reinforced concrete or floor heating systems.
2. If the loop is to be installed in a pipe, then make sure that the pipe is
made of plastic.
3. Do not lay any input signal cables parallel to the loop wire.
4. Avoid using dynamic microphones inside the loop. Always chose sym-
metrical electret or capacitor microphones to prevent acoustic feedback.
5. If it is not possible to lay the loop in a circle or in a "figure 8" (double
circle), then a special loop design calculated by an experienced tech-
nician will be necessary. (Please do not lay any comb or meander struc-
tures!)
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