Me ME580, Руководство пользователя

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8
UNDERSTANDING YOUR ME580
ME Amplifiers Melbourne, Australia
seconds the blue illumination of the ME logo will begin to change in brightness and will continuously
cycle through the range from minimum to maximum brightness. When the desired brightness is
reached, release the POWER button. This brightness setting will be stored and used each time the
amplifier is turned on, until a new setting is chosen by repeating the process.
9. Control of Brightness of the Standby Status Light
The brightness of the AMBER Standby Status Light located behind the ME logo on the front panel
escutcheon may be varied to suit individual preference and ambient lighting conditions. To adjust the
brightness, when switching OFF the amplifier manually, press and hold the POWER button. After 2
seconds the amber illumination of the ME logo will begin to change in brightness and will continuously
cycle through the range from minimum to maximum brightness. When the desired brightness is
reached, release the POWER button. This brightness setting will be stored and used each time the
amplifier is turned OFF, until a new setting is chosen by repeating the process.
10. Remote Start up and Shutdown
Monitoring of two remote startup and shutdown circuits is provided. The first monitored input is a DC
input used to turn the amplifier on or off when an ME or other compatible pre-amplifier is turned on
or off. This feature requires a connection from the pre-amplifier to the yellow REMOTE POWER
CONTROL terminal on the rear panel of the ME580. The second monitored input is the audio input to
the ME580, which turns the amplifier on when an audio signal is detected. If no audio input is
detected for approximately 2 ½ minutes (± ½ minute), the ME580 will turn off automatically, indicated
by the ME logo changing from BLUE to AMBER. Automatic shutdown will only occur if the amplifier
was turned on by the detection of an audio signal.
PROTECTION SYSTEM OPERATION
The ME580 protection system is elaborate, and will protect both your amplifier and your speakers from
damage for a range of abnormal conditions that may occur with your system. The description that follows is
intended for those users who wish to obtain a better understanding of the operation of the protection system,
and the conditions that may lead to an automatic shutdown of the ME580.
Relays with 4 x 10A parallel sets of arc suppressed contacts are fitted between each amplifier output and its
speaker terminals. These relays keep the speakers disconnected during amplifier start up, and disconnect the
speakers prior to shut down, to prevent any ‘clicks’ or ‘thumps’ reaching the speakers.
The protection system of the ME580 disconnects the mains power applied to the amplifier circuitry, and
disconnects the speakers, if it detects a hazardous condition that could cause damage to the ME580 or your
speakers.
1. Abnormal Conditions
a) Excessive High Frequency on output
Excessive high frequency on output can be caused by factors such as incorrect installation, high FM
volume level ‘off Station noise’, etc. This may also be triggered by excessive high frequency content in
your music (synthesizer music is capable of this) which is considered by the ME580 as being not suitable