C-4.4 Installation Instructions
Rev 1; 6-25-07
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INTRODUCTION
Welcome to Nexus Audio Systems and congratulations on your purchase of the C-4.4 Multi-Zone
Controller.
The C-4.4 supports 4 independently operated zones and infrared (IR) control of 4 external audio/video
source components. Each zone features a solid 20 Watts per channel analog amplifier for clean,
unfatigueing listening. Each of the routed source IR outputs can be set for 38 KHz or 56 KHz output for
optimum source control. The unit includes a RS-232 Port that allows the C-4.4 to be controlled with a
touch-screen or easily integrated with other home automation control systems. The Nexus C-4.4 provides
a mute function that can integrate with a doorbell or telephone system to ensure you will not miss a single
important call or visitor. The system is expandable to 8 zones using two C-4.4 Controllers.
Source power management is referenced to system status with all sources being automatically turned on
when the first zone is activated and turned off when the last zone turns off. Programming power
management takes only seconds and requires no additional connections or components.
The K-4.4 Keypads provide simple, intuitive control of zone power, source selection, source control,
volume and treble and bass. Four easy to read, backlit source select buttons, indicate zone status
(ON/OFF) and the source selected. The K-4.4 features three programmable buttons that can be used for
basic device control such as chapter skip, stop or pause for transport devices and tuner up/down or
preset up/down for tuners. The keypad features a built-in infrared receiver that can be used with the
included RC-4 Remote Control or any properly programmed IR remote for additional flexibility and
armchair control.
The keypads also feature a four position DIP switch that sets keypad IR receiver enable/disable, Zone
Group configuration, turn on to last volume/preset volume, and assignment as the primary or secondary
keypad when two keypads are connected in a single zone.
The Nexus C-4.4 is the easiest multi-zone controller to install and program ever built! At Nexus that’s our
goal. To provide you with well thought-out system components that reduce the time spent on-site allowing
you more time for managing other important parts of your business…such as selling and installing more
Nexus Audio Systems!
Thank you for your support.
SYSTEM OVERVIEW
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Four Source/Four Zone System ideal for condominiums, smaller homes and new developments
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20 Watts per channel analog amplifier housed in an attractive 2U chassis
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Includes four K-4.4 Keypads that connect to the Controller via CAT5 cable terminated with RJ45
connectors
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Each keypad features a built-in IR receiver with IR receiver enable/disable
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RS-232 system expansion output links two C-4.4 Controllers for system status of up to eight zones
and easy integration with other home automation control systems
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Fixed and variable stereo line level audio outputs linked to Zone 1 for use with external amplifiers or
an A/V Receiver.
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12VDC Doorbell/Telephone Mute Trigger Input
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12VDC Trigger Output
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IR outputs with dual frequency switches for 56KHz and 38 KHz sources
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Keypads include a four position DIP switch that configures Zone Group, IR receiver enable/disable,
last/default volume, primary/secondary keypad by zone
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Zone LEDs double as programming indicators when learning IR codes
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IR ‘pass-through’ allows use of IR remote for system, zone and source control
