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AUDIOropa PRO LOOP DCCplus Operation Instructions Manual

Loop amplifier
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Summary of Contents for AUDIOropa PRO LOOP DCCplus

  • Page 2 We would like to congratulate you on purchasing your new PROLOOP DCCplus induction loop amplifier. You have chosen a product that skillfully combines appealing design with high technical performance. This handbook describes exactly how the amplifier works and how it is to be used. Please read through the operating instructions carefully before using the amplifier.
  • Page 3 1.1.1 Description of the indicators, controls and connectors at the front panel Power supply indicator: The green LED goes on if the induction loop amplifier is switched on. VU indicator: It shows the master VU level. 0 dB (red LED), -6 and -12 dB (yellow LED) Level indicator for induction loop power: It shows the electrical current throught the loop.
  • Page 4 1.3 What’s in the box Please make sure that all the following parts are in the box: • PROLOOP DCCplus induction loop amplifier • Power cord • Operating instructions • “Induction Listening” sticker • Guarantee card If anything is missing, please contact your retailer or the manufacturer. 1.4. General information The PROLOOP DCCplus amplifier has been designed for use in professional venues where high reliability and safe operation are essential.

  • Page 5: Installation

    1.7 Supervision of the amplifier The most essential functions of the inductive loop amplifier are supervised. The internal power amplifier, the in- tegrity of the connected induction loop and the priority input is checked with a pilot tone by the induction loop amplifier. The “FAULT”-LED on the front panel will light up if a supervised function failed and the faulty contact is out of power.
  • Page 6 2.1 Cable cross section and wire diameter The best audio quality can be reached if the DC (direct current) resistance of the induction loop is between 1 and 3 Ohm. The DC resistance depends on the wire diameter and the wire length. Please follow the steps below: 1.

  • Page 7: General Information

    2.3 Configuring the amplifier and connecting audio sources Up to 2 audio sources can be connected to the symmetrical XLR jacks (27). PUSH PUSH PHANTOM PHANTOM ON OFF MIC LINE ON OFF MIC LINE Microphone or Line IN (e.g. CD-Player or audio amplifier) When a microphone is connected, the used input must be configured with the corresponding switches („MIC/ LINE“). If phantom-powered microphones are used, 17 V of phantom voltage can also be added.

  • Page 8: Important Note

    2.6 Voice activation The voice activation (VOX) of audio input 2 can be switched on and off with the MIX/VOX switch (26). If the switch is set to VOX, audio signals of input 2 override the audio signals of input 1. The audio signals of input 1 and input 2 are mixed if the switch is set to MIX.

  • Page 9: First-Time Operation

    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...
  • Page 10 3 Setting up a LOS loop system with PROLOOP DCCplus If you want to set up a LOS loop system you need two of the PROLOOP DCCplus. The first amplifier will be the master unit and the second amplifier will be the slave unit. 3.1 Master and Slave configuration - To define the first amplifier as Master amplifier the Master/Slave switch must be set on Master position.
  • Page 11 3.5 Example of a LOS loop measuring 16x19 metres, approx. 300m² Fig. Example of a LOS loop 3.6 Connecting the induction loops to the master and slave amplifier • The loop amplifiers has to be located outside of the loop. • Connect the 90° Slave Out of the master amplifier to the Master in socket of the slave amplifier. (See picture below) MASTER LINE OUT MASTER IN METAL LOSS SLAVE OUT COMPENSATION VU LED...
  • Page 12 3.7 Adjusting the amplifiers In order to adjust a LOS system, you will require a field strength gauge, e.g. the FSMplus (A-4292-0). 1. Before you switch on the amplifiers, turn all the dials as far to the left as possible. 2.

  • Page 13: Environmental Protection / Disposal

    4. Guarantee The PROLOOP LOS induction loop amplifier exhibits very high operating safety. If any malfunctions should occur, despite correct operation, please contact your retailer or the manufacturer. The guarantee covers repairs and shipping free of charge. The device must be returned in its original packaging – do not discard it. The guarantee becomes invalid if the device is operated incorrectly or any repairs are attempted by unauthorized persons (de- vice seal is broken).
  • Page 14 AUDIOropa Service-Partner Humantechnik GmbH Tel.: +49 (0) 76 21/ 9 56 89-0 Im Wörth 25 Fax: +49 (0) 76 21/ 9 56 89-70 D-79576 Weil am Rhein E-mail: info@humantechnik.com Germany Humantechnik GHL AG Tel.: +41 (0) 61/ 6 93 22 60...

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