Crest Audio CKS800 - User Manual

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CKS800 POWER

PROCESSING AMPLIFIER

Power Specifications 8Ω Stereo 4Ω Stereo

20Hz - 20kHz, 0.1% THD+N 400W 600W

1kHz, 0.01% THD+N 440W 670W

• Sequential Turn-On/Off (STO). Standard system uses any +8 to

+18VDC source and contact closure.

• PowerSave. Reduces power consumption at idle by turning off the

bias circuit (and fan if heat sink temperature is below allowed thresh-

old) when no signal present at input.

• 3 Module Bays. Unique chassis construction provides three separate

bays into which a diverse range of space-saving and cost effective

Input Processing, Network and Power/Output modules can be fitted.

By combining multiple processing and control functions in the ampli-

fier, CKS Series Power Processing amplifiers significantly save on

installation costs versus conventional outboard processing.

• Cool Operation. High thermal mass heat sinks, with high-efficiency

variable speed fan. Front panel mounted filter for easy maintenance.

• “Overbuilt” Power Supply. In the Crest tradition, the power supply

is “over-engineered” for ample current reserves to meet demanding

load conditions.

• More Transistors. More output devices than comparably-powered

competitive models to provide wider safe operating area and lower

heat generation.

Product Description

The Crest Audio CKS800 Power Processing amplifier is designed specifically for the unique requirements of high-quality commercial and industrial

sound installations. Design goals met by the CKS800 include exceptional sonic accuracy, high efficiency, minimum power consumption, compre-

hensive loudspeaker protection, and the ability to handle extended duty cycles.

In addition, the CKS800 incorporates Crest Audio’s proprietary modular approach to input/output and external control configuration. We call this

concept Power Processing. Through the provision of three plug-in module bays, these amplifiers offer exceptional flexibility with integral signal pro-

cessing, load monitoring, and either local or system-wide computer control via Crest Audio’s NexSys

network.

The CKS800 amplifier is manufactured exclusively in Crest Audio’s own USA plant, using only the highest quality components.

Key sub-assemblies are individually pre-tested, and all units are rigorously “burned-in” before final checkout on precision test equipment.

• TourClass

Protection Circuits:

ACL (Active Clip Limiting) prevents speaker damage with gentle

gain reduction at clip threshold.

IGM (Instantaneous Gain Modulation) monitors connected loads to

detect conditions that may overstress output devices, allowing safe

operation into difficult loads.

AutoRamp gradually increases gain to attenuator setting level when

amplifier is turned on.

TourClass also includes comprehensive thermal management, and

short circuit, DC voltage, turn-on/off transient, current inrush and

sub/ultrasonic input protection.

• Selectable input sensitivity/voltage gain (internal jumpers)

• UL certification

• Front panel status indication

• Rear panel attenuators with removable knobs

• Barrier strip input and output connectors

• Optional input isolation transformers

• Front panel label area

• Full five-year warranty*

CKS800 Features

Figures are watts per channel, both channels driven. NexSys is a registered trademark of Crest Audio Inc.

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Crest Audio CKS800 Specifications

General

Type	Power Amplifier
Channels	2
Signal-to-Noise Ratio	>100dB
Input Sensitivity	1.4V
Frequency Response	20Hz - 20kHz (+0/-0.5dB)
Input Impedance	20k Ohms (balanced), 10k Ohms (unbalanced)
Dimensions	19" x 3.5" x 89mm