Dynacord Power Mixer PowerMate 1600 Owner's Manual page 17

MASTER
The PROTECT indicator lights 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 inputs
are short circuited to prevent the power amp from being damaged.
In this case you should first check whether the ventilation louvers
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 power-on operation the PROTECT LED always lights for about
two seconds and the internal fans run at full speed, signalizing that the
PowerMate's protection circuitry is operational.
45. MASTER LED-DISPLAY
The PowerMate offers two 12-segment LED-chains for optical monitoring
the output levels of the L/R master signals. The indication range of the
LED-meter is 40dB, indicating the levels that are present at the main
outputs in dBu. The meter's 0dB mark is referenced to a 0dBu output
signal at the mixer output. Further increasing the level leads to the power
amplifier's maximum input level of +6dB – equaling an output power of
700 watts into 4 ohms per channel. Although higher levels are being
displayed, the power amp's processor already limits the signal, which is
indicated by the lit LIMIT LED in the status display.
46. STANDBY
Pressing the STANDBY button mutes the output signals at the main
outputs, EQ outputs and MONO output.
Caution: The monitor outputs AUX3/4 are still operational.
Because the signal flow between MAIN INSERTS and MAIN
OUTPUTS is interrupted, the signal feed to the internal power amplifier
is also interrupted. The STANDBY LED lights indicating that stand-by
mode is engaged and that input channel signals are not output via the
speaker systems. However, audio signals connected via 2Track Return
are still outputted, providing you with a very comfortable solution to play
intermission music during performance breaks.
47. PFL MASTER
Engaging the master PFL-button, the PRE FADER mono master
signal is routed to the headphones bus, so that it can be monitored
via headphones output. The volume of this signal is not affected by
the setting of the MASTER fader. The meter instrument in the master
section is simultaneously switched, so that the left LED-chain indicates
the level of the summed pre-fader L/R master signal channel (in dBu),
which basically is the master bus level, while the right LED indicates
the level of the summed post-fader master output.
48. MASTER L + R
Level controls to adjust the output signals of the left and right main
outputs (MASTER).
Please, make sure to set the input channel faders or at least
the master faders to their minimum position, or to engage the
STANDBY switch, before connecting an external sound source to
an input of the PowerMate. This will save you, your audience, and
the equipment from unnecessary stress.
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