Operation - MC Crypt XPA225 Notice D'emploi

Operation

After connection and verification of the cables, you can take the PA-Powerset into operation for the first time.
Only take the PA-Powerset into operation after familiarising yourself with its functions and
these operating instructions. Check again that all connections are correct.
Make sure that the amplifier and the connected devices are not overloaded. Playback must
never be distorted. If distorted music signals can be heard although the volume was not set too
high, switch off the system immediately and check the connection. If the connection is correct,
please contact a specialist.
• Turn the LEVEL (2) controller to minimum (left stop).
• Switch on your audio source (e.g. mixer) and the connected devices.
• Switch on the amplifier with the POWER (1) mains switch (switch in "I" position).
• The status displays (3) indicate the current operating state of the device.
POWER ON = device is switched on
CLIP CH1/2 = The respective channel is over-modulated (reduce the level of this signal if this display lights up)
• Set the audio source volume to approx. 75% of the maximum volume or the maximum undistorted level (visible
for devices with level indicator at the 0 dB mark).
• Now set the maximum required volume with the LEVEL (2) volume controls.
This setting achieves the highest possible signal-to-noise ratio and enables the best audio quality. Note
that the maximum volume depends on the performance of the speakers and the amplifier. The CLIP-
LEDs of the status displays (3) should only light up briefly when there are volume peaks. If the volume
is too high, this may lead to damage to the speakers as well as the amplifier.
• After completing this setting, the volume will only be controlled via the volume control at the audio source (mixer)
anymore.
• To switch off the system, first switch off the amplifier with the POWER (1) mains switch and then the audio
sources.
The amplifier for this equipment should always be the last to be turned on and the first to be
turned off. This will prevent any undesired noises (which can typically occur when switching
off the device) from damaging the amplifier or loudspeakers.
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