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POWER SYMBOL
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The power symbol lights up white when the installation amplifier is ready for operation.
In standby mode, the symbol lights up red.
VOLUME 1–4
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One level control each for channels 1 and 4. Turning to the right increases the volume; turning to
the left reduces it.
SIG 1–4 (SIGNAL)
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As soon as an audio signal is present on a channel, the corresponding signal indicator lights up
white.
CLIP 1–4
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The red CLIP indicator lights up when the corresponding channel is overdriven. If this occurs,
reduce the volume level. Failure to do so may result in distorted sound reproduction and damage
to the amplifier and speakers.
HPM
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To visually indicate that High-Power Mode for OUT 1 and OUT 2 or OUT 3 and OUT 4 amplifiers is
activated, the HPM indicator lights up white (see point 6 and 7 MODE).
PROT (PROTECT)
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The Protect indicator lights up permanently if the system is overloaded or overheats, if there is
a short circuit in the speaker path, and if there is a defect. The amplifier is automatically muted.
Disconnect the amplifier from the power supply and let it cool down for some time. Eliminate
a possible short circuit in the speaker path. Reconnect the amplifier to the power supply. If the
Protect indicator still lights up, there is a defect in the amplifier electronics. Contact an authorised
service workshop.
VENTILATION OPENINGS
To prevent damage to the device, do not cover the ventilation openings on the left and right
sides and on the top and bottom of the device and ensure that air can circulate freely. Covering
the ventilation openings on the top or bottom of the enclosure when mounting it underneath
or on top of a table is not critical, as the cooling provided by the ventilation openings on the
remaining sides is sufficient.
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