Audio Amplifier Wiring
26
Backup Amplifier
One QAA-5160-70/25 Amplifier may be designated as a backup amplifier when backup is required. It may be
installed in any audio cabinet and any slot position in a QX-5000 system.
Figure 18: QAA-5160-70/25 Amplifier (Backup Application)
Only the QAA-5160-70/25 may be
designated as the backup amplifier and
the MD-789 molex connector must be
placed in the bottom left-hand corner of
the amplifier board. The QAA-5160-70/
25 Backup Amplifier may be inserted
into the motherboard. No connections
are made to the backup amplifier's
terminals except for end-of-line resistors
which are to be placed directly on the
terminals in the audio cabinet.
Once the QAA-5160-70/25 Backup
Amplifier is installed, it must be properly
configured. See the Audio Cabinet
Configuration section for details.
The number of backup amplifiers is
limited to one per system. Only the first
failed amplifier gets the backup. For
systems that use six to the maximum of
eight audio cabinets, the backup should
be placed in the middle box. The
distance from the farthest audio cabinet
to the middle audio cabinet (which has
the backup amplifier) cannot be greater
than four cable lengths (approximately
208 inches or 17 feet).
MOTHERBOARD
CONNECTOR
CAPACITORS
XMFR
HEAT SINKHEAT SINK
XMFR
SPEAKER
TERMINALS
RELAYS
MOLEX CONNECTOR
MD-789 MUST BE CONNECTED
ON BOARD HERE TO USE
AMPLIFIER AS A BACKUP
To Next Page
Loading...
