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Ci
owner's manual
TM
AutoRamp Protection
AutoRamp gradually increases the amplifier gain from -∞ to the attenuator setting
every time the amplifier is turned on or is reactivated after a protect condition. This
exclusive Crest feature avoids unnecessary stress on the loudspeakers by preventing
sudden bursts of audio from arriving at the amplifier's output after its output relays
initially close.
NexSys Fault Monitoring
A Ci equipped with an NxDante8 or NxCobraNet8 module and connected to a
NexSys network will report fault conditions to the PC controlling the network. If a
networked amplifier enters ACL or IGM or experiences a thermal, DC voltage, or
short circuit fault, the fault condition will be reported the PC interface. This allows
easy monitoring of amplifier operating conditions across a large or widespread
network from a single location.
Module Bay
Ci Power Processing amplifiers come standard with a blanking panel fixed over the
module bay. When a NexSys module is installed in this bay, connection to a network
is made via a standard RJ-45 connector and CAT-5 Ethernet cable.
Module Removal
Only module upgrades require modules to be removed from the amplifier. Contact
Crest Audio Customer Service for full details on module removal. The 'General
Module Setup' diagram indicates the general setup of the rear panel module/bay
configuration.
Note: Removable modules contain static-sensitive devices;
handle modules only at static-safe workstations!
Replacing or Installing a Network Module
The amplifier must be switched off and unplugged from the AC mains supply before
this operation is undertaken. Two Phillips head screws secure the module to the
chassis. The module is connected electrically to the amplifier with a single multi-pin
ribbon cable. Once unscrewed from the chassis, unplugging the module from this
ribbon cable frees the module for removal. To insert a module, simply reverse this
procedure.
Note: Standard Ci Power Processing amplifiers come with a
blank panel installed in the Network bay. The amplifier must
not be operated without a Network module or blank panel in
place.
Service or Technical Inquiries
For Crest Audio service, parts or technical assistance, please call our toll free customer
service number: 866.812.7378.
Amplifier Operation
Because of the complexity
of the design and the risk of
electrical shock, all repairs
must be attempted only by
qualified technical personnel.
If the unit needs to be
shipped back to the factory,
it must be sent in its original carton.
If improperly packed, your amplifier
may be damaged..
For replacement packag-
ing, call Crest Audio's
Customer Service.
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