Owner`s manual

When operating in the
bridged mode, both
attenuators must be in
the same position so
the speaker load will be
equally shared between
the channels.
a
Features Overview
8
Attenuators
Each channel has an attenuator knob to adjust the channel’s output from -∞ to 0dB.
9
Rear Panel Status LED’s
The “Signal,” “ACL/IGM,” “Fault,” and “Mute” LED’s on the rear panel serve the same function as
the front panel LED’s of the same names.
0
Input Connectors
The Ci uses one 3-pin Phoenix connector per channel for balanced line-level audio input. These
inputs can also be setup to accept an unbalanced signal.
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“Low Z/ 70V” Gain Switch
This switch sets the amplifier’s gain structure as “70V” constant sensitivity (1.4V setting) or “Low
Z” constant gain (x40 settings)
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Fault Outputs
Each channel has a Fault output contact closure. When a channel fault occurs, this contact closure
will engage. These contact closures can be further programmed using NexSys Software.
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Control Voltage (CV) Inputs
Each channel has a Control Voltage Input. Using a 1K Ohm potentiometer across the +/-
terminals, these inputs (by default) control the volume of the corresponding channel. These inputs
can be further programmed using NexSys Software.
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Module Bay
The rear panel of a Ci Power Processing amplifier provides a module bay configured to accept
interchangeable plug-in modules. Your amplifier may have been factory configured with some of
the optional modules. In this case, additional information on the relevant modules will be enclosed
in the amplifier box, or in a separate binder. If all required information is not included, please call
Crest Audio’s Customer Service department or your local Crest Audio representative.
side panels
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Exhaust Ports
Heated air exits through the exhaust ports, located on the sides of the amplifier chassis. Do not
block these ports when rack-mounting the amplifier.
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