Crest Audio Stereo Amplifier Ci 20 X 4 User Manual

Multi-Channel  
Power Processing  
Amplifiers  
Ci  
series  
(Ci 20x8 model shown)  
Dual  
4Ω  
Bridged  
Power Ratings  
8Ω  
70 volt  
200 w  
220 w  
8Ω  
140 volt  
400 w  
440 w  
Ci 20x8  
Ci 20x4  
220 w  
220 w  
150 w  
150 w  
300 w  
300 w  
1kHz, 0.02% THD+N Power figures are watts per channel, all channels driven.  
FeATUres OVerVieW:  
DesCriPTiOn:  
The Ci Series is the next generation family of elevated efficiency  
amplification from Crest Audio. Ci amplifiers are designed to  
drive low-impedance or 70-volt speaker loads without bridging  
between channels. Bridged operations are supported for  
additional power into 8-ohm loads or 140-volt operation.  
• Four- and eight-channel versions available, each rated @  
200 watts per channel @ 8 ohms or 70 volts (100-volts  
isolated outputs with optional accessories).  
• Individual channels may be selected as low impedance or  
70 volt  
As with all Crest Audio products, sonic performance is of  
primary importance. In addition, high-efficiency, comprehensive  
load protection and compact packaging have been achieved in  
the Ci design.  
Tour Class® protection  
• Front and rear panel indicators for amplifier status  
• Variable-speed fan  
The Ci Series amplifiers incorporate Crest Audio’s tried-and-  
true modular approach to intelligent amplifier configuration.  
Through the provision of a single module bay, these amplifiers  
may accommodate modules that facilitate load monitoring,  
digital audio delivery and Crest Audio’s NexSys networking.  
• Sequential turn-on standard  
• Euro-style input connectors  
• Barrier strip output connectors  
• One controlled-voltage input per channel standard  
• One fault relay per channel standard  
A full complement of features and options makes this series  
very versatile, whether powering airport systems, restaurant  
audio or a myriad of other applications. The Ci Series amplifiers  
bring a new generation of amplification to Crest Audio.  
• Module bay provided to input Nx module bay accessories  
for full amplifier control and monitoring via NexSys® 4  
software or MediaMatrix® product and digital audio  
distribution  
• 100- and 50-volt operation supported with external  
accessories  
• EN60849 and ANSI60849 compliant with optional  
accessories  
 

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