12 Volt Trigger & Ventilation
MULTI-CHANNEL POWER AMPLIFIER | www.elac.com | Page 8
12V Trigger IN
When a voltage b 5V DC and +24V DC is sensed at the trigger input the amplifier is
turned ON.
12V Trigger OUT
The output trigger has a 12V voltage and 10 mA current.
Ventilation
The multi-channel power amplifier series IS-AMP8100, IS-AMP1275 and IS-AMP1650 require
plenty of good ventilation to properly cool and work within the design parameters.
There are thermal sensors to protest the amplifier from overheating. If overheat occurs, the
amplifier is entering in compression mode which means, less output power.
Further more, in some extreme overheating cases, the amplifier is protecting it self by turning
OFF. If this occurs often, identify the cause and take corrective actions:
• do not install the amplifier in a sealed location with poor ventilation
• install a fan in the rack
• make sure the amplifier(s) are not overloaded with speakers impedances below the
recommended minimum impedance
• ensure there are no short circuits in the speaker cables or speakers
NOTE: Please, be advised that no more than 2 amplifiers can be stacked together without a
1U rack space or more between them.
Ideal spacing above and below each stack of 4 amplifiers or individual amplifier is
shown in Figure 5.
Figure 5 Spacing for amplifiers stacked mount
1U
1U
