Owner's Manual

6
LOUDSPEAKER OUTPUT PROTECTION AND MUTING
When the amplifier is in standby mode the loudspeaker output
terminals are isolated from the amplifier by high quality relays. When
the amplifier is first switched on from standby mode the loudspeaker
outputs remain disconnected for a few seconds to allow the internal
voltage levels to settle. The same process occurs when the amplifier
is switched back into standby mode. This power-on mute does not
disconnect the headphone socket, so it is recommended that
headphones are unplugged from the amplifier before switching to
standby mode and plugged in again after switch-on.
The same loudspeaker mute relay is used to protect both the amplifier
and your loudspeakers against possible damage. If any one of a
number of fault modes is detected (loudspeaker outputs short circuit,
amplifier overheating, amplifier DC fault) the loudspeakers will be
disconnected from the amplifier to protect both. In the case of a short
circuit or DC fault the loudspeakers will be re-connected after a few
seconds, but will be disconnected again if the fault persists. If
overheating has caused the protection system to operate, then it will
take some time for the heatsinks to cool sufficiently to allow the
loudspeakers to be re-connected (probably between five and fifteen
minutes depending upon the room temperature and ventilation). The
amplifier will cool more quickly if it is switched to standby mode, or if
the POWER is switched OFF.