Perreaux eloquence 150i, Руководство пользователя

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Protection System
Your éloquence 150i integrated amplifier employs a proprietary protection
system 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.
DC Detection
The DC detection mechanism offers loudspeaker protection if the output
of the amplifier goes to a high DC voltage because of excessive DC at a
source input or some internal fault.
When DC detection occurs the output to the speakers are disconnected
and the PROTECT! screen is displayed. The éloquence 150i will try to
compensate for the amount of DC voltage present, if successful the
PROTECT! screen will disappear and operation will resume as normal.
If the PROTECT! screen remains for a prolonged period of time, switch off
the amplifier. Wait a few seconds before switching back on and check-
ing the operation at a reduced volume level. If the DC fault occurs again
please contact your retailer for service.
Over Temperature Detection
Over temperature is caused by high listening levels and/or low impedance
speakers. The over temperature detection constantly monitors the heat
generated by the output MOSFETs. If the monitored temperature reaches a
high level (suitably within the limits of the output devices) the output to the
speakers will be disconnected and the PROTECT! screen is displayed.
The amplifier will remain in this state until it has cooled down adequately
– at which time the PROTECT! screen will disappear and the output to the
speakers re-engaged.
The volume should ideally be reduced to allow the amplifier time to cool
down adequately. If the unit has not fully cooled down then the temperature
may reach the limit again soon after the amplifier has resumed operation.
If the loudspeaker impedance is low the temperature of the amplifier will
rise faster as the amplifier is working harder. If the amplifier is mounted in a
cabinet or the ventilation slots are obstructed the over temperature detec -
tion may activate/reactivate after a short listening time.
DC Fuse Fail Detection
AC Fail Detection
Over Current Detection
The over current detection system ensures the output devices are con-
stantly operating within their safe operating limits and provides a fast
response to temporary overload conditions.
When over current detection occurs the output to the speakers are discon-
nected and the PROTECT! screen is displayed. The amplifier will need to
be switched off and the source of the fault resolved before the amplifier can
be switched on again.
Over current detection can occur due to a short across the speaker termi-
nals, a speaker driver/crossover fault or excessive current demand exceed-
ing the amplifiers current rating.
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