Christie Vive Audio CDA5, User Manual

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12 Christie Vive Audio CDA5/CDA7.5 Amplifiers User Manual
020-101354-01 Rev. 1 (03-2014)
condition exists within the amplifier or the load it is driving. If the channel does
not reset and the DC indicators remain lit, send the amplifier to an authorized
service center for repair.
Check the amplifier mode:
• If the amplifier is in STEREO mode, make sure there is signal input to CH A and
CH B. See “Input Connections”.
There is sound output
from the loudspeakers,
but there are no high
frequencies present in the
output.
• Check if the low-pass filter is engaged on either channel. Make sure the input
mode selector switch is set to the correct mode (Full Range is the default mode).
• Verify that the NL4 twist-lock connector is wired correctly if the loudspeaker is
biamped through the CH A output connection. See “Biamp Mode Connections”.
There is sound output
from the loudspeakers,
but there are no low
frequencies present in the
output.
•
Check if the high-pass filter is engaged on either channel. Make sure the input
mode selector switch is set to the correct mode (Full Range is the default mode).
• Verify that the NL4 twist-lock connector is wired correctly if the loudspeaker is
biamped through the CH A output connection. See “Biamp Mode Connections”.
The amplifier is
overheating.
•
Verify that there is adequate ventilation around the amplifier. Make sure there is
31 cm (12 in.) clearance at the front and the back of the amplifier.
•
Verify that the amplifier cooling vents are not blocked.
• Check the internal cooling fan of the amplifier to make sure they are working. If
the power amplifier has overheated, the TEMP indicators are lit, and the fans are
not operating, cease operation of the amplifier and send it to an authorized
service center for repair.
•
Verify that the amplifier is operating within its rated impedance. Check the
loudspeaker load being presented to the amplifier outputs. The minimum load
impedance for the CDA5 and CDA7.5 power amplifier is 2 ohms. Loudspeaker
loads below 2 ohms stereo (4 ohms for each channel) or 4 ohms bridged cause
the amplifier to overheat. If overloaded, correct the loudspeaker configuration or
load the resume operation.