CKd Owner’s Manual
Introduction
Congratulations on your purchase of a Crest Audio CKd family of Power
Processing amplifiers. Please read this manual carefully (especially the
“Important Precautions” section located inside the front cover) as it
contains information vital to the safe operation of the amplifier. Also, please
fill out and return the enclosed product registration card. The CKd Series of
four and eight channel Power Processing amplifiers represent new levels
of value and flexibility never before offered to the contracting market. CKd
Series amps are specially designed to independently drive low impedance
speaker loads and/or provide directly coupled 70.7
or
100 volt outputs on a
per channel basis. This amplifier covers almost every conceivable installed
or distributed sound power requirement. By combining legendary Crest
performance with a plug-in module bay located on the rear panel, these
amplifiers can become very sophisticated audio processors. The CKd
Series is everything that you expect from Crest Audio. They are ruggedly
built from high quality components, intelligently laid out, and possess
comprehensive protection features. After-sale support is considered
paramount at Crest Audio. For any assistance in the set-up or operation of
this product please call Crest Audio’s Customer Service department or
your local Crest Audio representative. Should you have any problems at
all, or suggestions that may help us improve our products or service,
please contact us. We encourage your participation in Crest’s future.
(See
back cover for contact info) Crest Audio may also be contacted on the
World Wide Web at: http://www.crestaudio.com.
CKd Series Amplifier Features
• Two separate high current switched mode power supplies with individual
front panel breakers. PS1 is for channels 1– 4 and PS2 is for channels 5 – 8.
• Four and eight
-channel versions available utilizing the latest high efficiency
class D topology.
• Individual channels may be selected as low impedance, 70 volt direct or
100V direct output.
• Tour Cl
ass
®
protection–ACL, IGM, AutoRamp, DC, OC, Thermal, Load, etc.
•
Advanced limiting with thermal and performance parameters for maximum
‘up
-time’ and sound quality.
• Front and rear panel LED indicators for amplifier status.
• Variable
-speed fan with front to side ventilation.
• Sequential turn
-on using contact closures.
• Mini Euro
-style audio input connectors.
• Barrier strip
amplifier output connections.
•
70Hz, 3 pole, high pass filter on each channel automatically engaged in 70V
or 100V modes
and disengaged in Low Z mode. Other options
are available under software control.
• One controlled
-voltage input per channel standard which defaults to channel
gain through
a
1K pot.
• Module ba
y provided for Nx module bay accessories for full amplifier control
and monitoring via NexSys
®
software or MediaMatrix
®
product and digital
audio distribution.
Channel
Selectable
Output
For your safety, read the
important precautions
section, as well as input,
output, and power
connection sections.
TourClass
®
Protection
Contact Closure
Sequential Turn
On/Off
Two
Power
Supplies
CKd Series Owners Manual v1e
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