Crest Audio CKi Series manual Introduction, In-rack trou

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Introduction

Crest Audio, the first company to offer com- puter controlled amplification now raises the bar. With the introduction of the CKi series of amplifiers, Crest Audio has added many standard features that other manufactures either charge additional for or don’t offer at all.Whether your requirements are sim- ple or extremely complex, CKi series amplification sys- tems are perfect for permanent installations of any size. As with all Crest Audio amplifiers, reliability and sonic performance are the most important factors in the amplifiers design.

With three different types of amplifiers, two add-on modules, and plug in options, the CKi series of amplifiers allows you the flexibility to install exactly what you need to do the job. CKiS amplifiers are the low impedance series, CKiV units are specially designed for distributed systems, and CKiX is the 100 Volt, transformer isolated version of the amplifier. Module options include NxEtherNet and NxCobraNet cards which can be ordered installed in the amplifiers or easily added later. The NxEtherNet card is an ethernet based network module that enables the amplifier to communicate with NexSys and MediaMatrix software for control and reporting of amplifier functions by remote computer control. The NxCobraNet card incorporates all of the functionality of the NxEtherNet module plus the ability to decode 2 channels of CobraNet digital audio.

CKi amplifiers standard features include sequential turn-on / turn-off (STO), input gain switch

(x20, 0dB / .775V, and x40), mode switch (stereo, par- allel, bridged), ground lift switch, and removable detent- ed potentiometers. In addition, status LEDs are provid- ed on the front and rear of the unit for signal, ACL, IGM, and protect conditions. Power monitoring is by two LEDs, one which displays that power is present to the amplifier and one that signifies that the amplifier is operating (Active LED). Input is through 3-pin euro style connectors and output is provided on 4 position barrier strips. Fault I/O closure outputs are provided on a three pin euro-style connector to alert external supervisory systems, such as a control room display, if an amp problem exists.

Amplifier options available include NxDSP processor plug-in board and the transformer input iso- lation board. The NxDSP option allows control of speaker related functions such as delay, EQ, and limit- ing.The transformer isolation board helps to eliminate problems with improper audio grounding and imped- ance mis-matches between equipment.

Crest TourClass protection includes active clip limiting (ACL) which prevents speaker damage by pro- viding gentle gain reduction at the onset of clipping. Instantaneous gain modulation (IGM) monitors speak- er loads to detect conditions that overstress ampli- fiers. Autoramp gradually increases gain to the preset amplifier setting when the amplifier is turned on.

Backed by Crest Audio’s 5 year warranty* and exceptional service departments,CKi amplifiers are a per- fect choice for all of your fixed installation requirements.

User resettable AC

Barrier strip output

Detented rear panel

Module bay for NxCobraNet or

attenuators with

mains breaker

connectors

NxEthernet modules

 

removable knobs

 

 

 

Mode switch for

Status LEDs make

3 pin euro

Selectable input

Sequential Turn-on

Fault I/O for con-

Signal ground

stereo, parallel, and

in-rack trou-

style input

sensitivity

bridged mode

bleshooting a

connectors

 

connections

nection to moni-

switch

 

operation

breeze

 

 

 

 

 

 

 

toring systems

2

*USA, Canada, and many other countries.

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Contents CKi Introduction In-rack trouCKi100s CKiS SeriesDesigned to drive low impedance loads CKiV Series Designed specifically for 70 Volt distributed applicationsCKi500x CKiX SeriesEngineered for 100 Volt transformer isolated systems Option Module for NexSys Control of CKi Amplifiers NxCobraNet ModuleNxEtherNet Module Optional DSP for NExSys Control and CobraNet Digital Audio NxDSPInput Transformers Optional Plug-in Input TransformersCrest Audio Inc

CKi Series specifications

The Crest Audio CKi Series represents a remarkable blend of performance, versatility, and reliability, making it an ideal choice for professionals in the sound reinforcement industry. This series of power amplifiers is designed to meet the demanding needs of both touring applications and permanent installations.

One of the standout features of the CKi Series is its efficient Class D amplifier design. This technology provides a lightweight solution without compromising on power output, making it easier for professionals to transport and set up their equipment. The CKi amplifiers deliver high power levels while maintaining low heat generation, which enhances reliability during extended use.

The series incorporates cutting-edge digital signal processing (DSP), enabling users to fine-tune their audio experience with ease. With features like built-in crossover settings, EQ options, and delay adjustments, the CKi Series allows for precise audio manipulation to suit various environments and audience sizes. This level of customization ensures optimal sound quality in concerts, events, and installations.

Another notable characteristic of the CKi Series is its robust construction. Engineered for durability, these amplifiers feature a rugged chassis and high-quality components that are built to withstand the rigors of both touring and fixed installations. The front-panel LED indicators provide users with real-time status updates on operation and performance, allowing for immediate troubleshooting if necessary.

The CKi amplifiers are also equipped with advanced protection circuitry, safeguarding the unit against overloading, overheating, and short circuits. This ensures that users can perform with confidence, knowing that their equipment is safeguarded during intense performances.

In terms of connectivity, the CKi Series offers a variety of input and output options, including both balanced and unbalanced inputs, allowing for seamless integration with a range of audio sources. Flexibility is paramount, and the series is designed to cater to the diverse needs of sound engineers and installers alike.

Overall, the Crest Audio CKi Series power amplifiers blend innovative technology with robust performance, making them a standout choice for professionals in the audio industry. Their combination of efficient power delivery, advanced DSP capabilities, and durable construction positions them as reliable assets in any sound reinforcement application, whether on the road or in a fixed setting.
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