AUDIOropa PRO LOOP DCCplus Manual de instrucciones - Página 9

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2. Please check if the fuse holder contains the correct fuse.

6 A fuse (T) if the voltage selector is set on "115" or

3 A fuse (T) if the voltage selector is set on "230".

Note

A 3 A fuse (T) is set into the fuse holder when the PROLOOP DCCplus induction loop amplifier is

delivered.

3. Use a locally approved power cable to connect the loop amplifier to the mains socket.

115V AC

230V AC

2.11 First-time operation

Before you switch on the device, please turn all the control knobs as far to the left as possible.

- Connect a sound source to audio input 1.

- Connect the loop amplifier to the mains power supply.

- Set the AGC/Limiter switch on the Limiter position.

- Switch the audio source on.

- Switch the amplifier on. The indicator for the power supply (2) and the fault indicator (4) will light up during the

self-testing. After about 45 seconds the fault indicator light will go out and the amplifier is ready for use.

- Increase the volume of audio input 1 with its input volume control (6) until the Limiter LED lights up.

IN 2

IN 1

- Increase the electric current through the induction loop with the Power control (12) on the front of the amplifier.

MAIN

- Use the earphone jack (13) to listen directly and, if necessary, adjust the sound with the bass (7) or treble (8)

control.

BASS

TREBLE

2.12 Adjusting the field strength

You will need a field strength gauge (special accessory) to calibrate the system correctly according to the

IEC 60118-4 standard.

2.13 Metal loss compensation

You will get a loss of the magnetic field strenght if you have strong reinforcement metal in the floor.

To compensat this loss use the metal loss compensation control on the rear side of the loop amplifier.

Please follow the steps below to set the metal loss compensation:

1. Turn the Metal loss compensation control to the left position.

2. Connect headphones to the headphone socket of the amplifier and listen to the audio signal.

3. Use an inductive loop receiver and the same headphones to listen to the audio signals of the inductive loop.

4. Turn the Metal loss compensation control to adjust the tone of the audio signal.

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