Related Manuals for Adastra LA-75
Summary of Contents for Adastra LA-75
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Page 1: Operation Manual
L A S eries Ref. No. 952.859 Model: LA-75 952.859 LOOP AMPLIFIER LA-75 CH 1 INPUTS CH 2 BASS TREBLE LOOP CURRENT SIREN < 0.7 P OWE R Operation Manual... -
Page 2: Operating Elements And Connections
1 Operating Elements & Connections Front Panel (LA 75) 1. Controls for adjusting the preamplification for the channels CH1 & CH2 2. T one Controls 952.859 LOOP AMPLIFIER LA-75 BASS = Bass Control CH 1 TREBLE = T reble control INPUTS CH 2 3. -
Page 3: Safety Notes
The maximum size (75m≤ for LA-75) of an induction loop may be reduced due to field strength losses which are caused by metal in ceiling and floors. Small losses can be compensated with the function METAL LOSS CORRECTION. -
Page 4: Loop Current
Please note that the orientation of the field strength meter may influence the reading. Induction Loop The LA-75 allows inductive sound reproduction for an area of up to 75m The loop is laid at the edge of the sound reproduction area. The distance to the ear level should be approx 1m. -
Page 5: Operation
Connection of the induction loop T he loop amplifier mus t be outs ide the loop 1) Twis t the cable s ection between the amplifier and the loop 2) B efore the indication loop is connected to the amplifier, check with an ohmmeter to ens ure that the loop is not earthed. 3) C onnect the cable ends of the loop to the terminals LOOP OUT P UT (11) Microphones Up to two microphones may be connected to the terminal block as C ON2 &... -
Page 6: Activating Functions
6) Connect Inputs & Outputs to respective terminals blocks as shown in the label as wire connection and settings. Specifications Loop current:................3 A rms @ 1 Ω load Admissible loop resistance..........0.2 - 2 Ω Max. Hearing area:..............75m≤ per LA-75 Inputs MIC-56dBu / 2 K Ω Terminal Block Unbalanced:................