4. CONNECTIONS
WARNING: To prevent the risk of electric shock, do not connect the loudspeaker with the amplifier switched on.
1. Offer up the Loudspeaker and attach the spring clips to one of the firedome side brackets.
2. Connect your amplifier output to the terminals on the loudspeaker. The negative amplifier output connects to the loudspeaker COM terminal, the positive amplifier output connects to one of the other loudspeaker terminals. Use the tables in the specification section to select the power rating for the voltage line you are using (70 V or 100 V). Use a small flat screwdriver to secure the connections.
5 4 3 2 1 
5 4 3 2 1 
COM
COM
3. When the connections are securely made, connect the other spring clip to the firedome, and press the loudspeaker upwards until it is flush with the ceiling.
Precautions
•Before using the loudspeaker, carefully check that all the connections have been made correctly to make sure there are no accidental short circuits that could cause electrical sparks.
•Check if your power amplifier’s constant output voltage is 70 V or 100 V, and find the rated power output.
•The sum of the operating power values of all the loudspeakers connected to the audio line must not exceed 80 % of the amplifier’s output power.
•Verify that the connections to all of your loudspeakers are made correctly “in phase.” When different loudspeakers reproduce the same frequencies but with phase differences, there may be sound cancellation. Loudspeakers are often situated in adjacent positions and the sound waves interact with each other.
If a loudspeaker is connected incorrectly; i.e., the polarity of the audio line conductors is inverted, the audio signals are transmitted with differences in phase and correct reproduction is therefore jeopardized. Most notably, the bass response may suffer.
CIS Series – 5
