Operation Manual
14. Appendices
18
E SERIES Operation Manual rev 2.1.0
13.4.4. Constant Voltage 70 V system setup and operation
When using E Series ampliers to drive constant voltage (high-impedance) speaker systems at 70 Vrms or 100 V
peak, in most cases you can simply connect the speakers to the amplier output terminals, select the 70 V RSL
setting, and place the amplier in service.
Limiters - Limiting is applied to avoid distortion at the selected voltage limit threshold and to avoid hitting the rail if it
has sagged below the selected threshold.
Limiting also may be applied when maximum output current has been reached or when the mains voltage is too
low to maintain required rail voltage. Limiting activity is shown by the front panel Limiter LED.
13.4.5. Output Current Peak Limiter (CPL)
The Current Peak Limiter (CPL) ensures that the amplier will not be damaged by trying to deliver current to the
outputs exceeding the physical limitations of the output devices. The CPL keeps the amplier within the Safe
Operating Area. The CPL is non-adjustable and has different limit values depending on model type. The maximum
output current values for the three E Series models are:
• E 12:2, 18 Arms per channel
• E 8:2, 16 Arms per channel
• E 4:2, 14 Arms per channel
14. Appendices
14.1. Maintenance
During normal operation your E Series amplier will provide trouble-free service. The only user maintenance
required is to periodically vacuum clean the air inlets in the front.
In some extreme cases it may be necessary for authorized service personnel to clean the inside of the amplier in
order to safely remove dust or other build ups which may occur during prolonged normal usage. If you are using
your amplier in a heavy duty application, it is recommended to have your amplier cleaned inside every 3 years
purely as a preventative action.