Protection System
Your Audiant 80i integrated amplifier protection systems to ensure reliability and long life of the unit and
the speakers it is connected to. The protection system comprises of five main protection methods. In all
instances the protection state will be indicated by all source input LEDs flashing. Power to the amplifier will
need to be cycled, by the standby button or power switch, to reset the protection state.
DC Offset Detection
The DC offset detection system offers loudspeaker protection if the output of the amplifier goes to a high
DC voltage.
Over-Temperature Detection
The over-temperature detection system constantly monitors the heat generated by the output MOSFETs.
If the monitored temperature reaches 80°C (176°F) the output to the speakers will be disconnected to stop
the temperature from rising further.
An over-temperature condition is normally caused by a combination of high listening levels, low impedance
or low sensitivity speakers.
Fuse Fail Detection
The fuse fail detection system monitors the internal DC rail fuses. If any of the fuses should blow the output
to the speakers will be disconnected to protect the speakers and amplifier from damage.
Fuses normally blow for a reason. Any doubts about fuse failure should be conveyed directly to your
Perreaux dealer.
AC Fail Detection
The AC fail detection system monitors the AC voltage on the main power transformer. If for any reason
the AC mains voltage is lost, e.g. power failure or tripped circuit breaker, the speakers are immediately
disconnected from the amplifier before the amplifier loses power.
Over-Current Detection
The over-current detection system ensures the output devices are constantly operating within their safe
operating limits and provides a fast response to temporary overload conditions. When an over-current condition
is detected the output to the speakers is disconnected to isolate the amplifier from potential damage.
An over-current condition can occur due to a short across the speaker terminals, a speaker driver/crossover
fault or excessive current demand due to low impedance speakers.
Care and Maintenance
The 80i has been designed to provide many years of trouble free enjoyment. It is important to keep the
exterior of the unit clean.
Notes:
Always switch the unit off and remove the power cord from the rear of the amplifier before
attempting to clean your Audiant 80i integrated amplifier in the manner described below.
Never apply liquid directly to the amplifier.
Never use abrasives.
Never rub in a circular motion.
Front Panel and Cover
The front panel and cover feature a durable, high-quality anodised finish. To remove finger marks and dirt,
simply rub the surface with a soft cloth.
If the dirt is not removed, use a small quantity of isopropyl alcohol on a clean cloth and rework the effected area.
9
