55. POWER AMP STATUS indicators
These indicators are to inform you about the momentary operational status
of the PowerMate’s internal power amplifier.
The POWER ON indicator is always lit when the PowerMate is in operational
mode. If the LED is not lit after you have turned the power on, please make
sure that the PowerMate’s mains cable is correctly plugged in. If this is the
case and the LED is still not lit, please contact your dealer.
The LIMIT indicator signals that you are operating the PowerMate at the
internal amplifier’s limit. Frequent blinking of the LED is acceptable, since
the amplifier’s incorporated limiter prevents distortion. Continuous lighting
indicates that you have to be aware of a degradation in the outputted sound.
In that case, the master level has to be reduced.
The PROTECT indicator is lit when one of the PowerMate’s extensive
protection circuits – against thermal overload, HF-induction, DC at the
outputs, and SOAR-protection – is activated. When the PowerMate is in
protect mode, the speaker outputs are muted and the amplifier’s inputs are
short circuited to prevent the amplifier from being damaged. In this case
you should first check if the ventilation louvres are blocked. Another cause
could be, that you have connected more than three 8ohms speaker systems
per power output. Please also disconnect the SPEAKON connectors and
check the speaker cables for short circuits.
During the power-on operation the PROTECT LED always lights for about
two seconds, signalizing that the PowerMate’s protection circuitry is ope-
rational.
56. PHANTOM POWER
When this switch is pressed, all MIC inputs are supplied with +24V
phantom power. Please make sure to engage the phantom power only
when the PowerMate is switched off or in stand-by mode. With active
phantom power the connection of unbalanced signal sources (key-
boards, mixer, etc.) is not admissible, because this could lead to
severe damaging of your equipment.
ATTENTION! IMPORTANT NOTICE!
In general, the operation of phantom powered condenser micropho-
nes and balanced dynamic microphones at the same time does not
lead to any problems.
Nevertheless, some balanced dynamic microphones are extremely
sensitive. These models could get damaged when used on mixers with
active phantom power. Please refer to the microphones’ owner’s
manuals to make sure that this operation is permissible.
To be on the safe side, you should switch the PHANTOM POWER off,
when using balanced dynamic microphones. This ensures that your
sensitive microphones do not suffer from any damage.
MASTER
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