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CKi Series |
CKi |
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Power Amplifiers |
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S E R I E S |
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Introduction
Crest Audio, the first company to offer computer 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 simple or extremely complex, CKi series amplification systems 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, parallel, bridged), ground lift switch, and removable detented potentiometers. In addition, status LEDs are provided 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 isolation board. The NxDSP option allows control of speaker related functions such as delay, EQ, and limiting.The transformer isolation board helps to eliminate problems with improper audio grounding and impedance mis-matches between equipment.
Crest TourClass protection includes active clip limiting (ACL) which prevents speaker damage by providing gentle gain reduction at the onset of clipping. Instantaneous gain modulation (IGM) monitors speaker loads to detect conditions that overstress amplifiers. 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 perfect choice for all of your fixed installation requirements.
User resettable AC |
Barrier strip output |
Detented rear panel |
Module bay for NxCobraNet or |
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attenuators with |
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mains breaker |
connectors |
NxEthernet modules |
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removable knobs
Sequential Turn-on |
Fault I/O for con- |
Signal ground |
connections |
nection to moni- |
switch |
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toring systems |
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Mode switch for |
Status LEDs make |
3 pin euro |
Selectable input |
stereo, parallel, and |
in-rack trou- |
style input |
sensitivity |
bridged mode |
bleshooting a |
connectors |
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operation |
breeze |
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2
*USA, Canada, and many other countries.
CKiS Series
Designed to drive low impedance loads
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Stereo |
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Bridged |
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Model |
8 Ω |
4 Ω |
2 Ω |
8 Ω |
4 Ω |
Class |
RMS |
Maximum |
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CKi100s |
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60W |
90W |
N/A |
180W |
N/A |
AB |
22V |
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31V |
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CKi200s |
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120W |
175W |
N/A |
350W |
N/A |
AB |
32V |
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45V |
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CKi400s |
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255W |
320W |
N/A |
510W |
N/A |
AB |
56V |
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64V |
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CKi800s |
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440W |
670W |
N/A |
880W |
N/A |
AB |
64V |
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90V |
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CKi800-2s |
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420W |
670W |
870W |
880W |
1740W |
H |
64V |
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90V |
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CKi1200s |
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630W |
940W |
1130W |
1880W |
2260W |
H |
78V |
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110V |
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CKi1600s |
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815W |
1130W |
1440W |
2260W |
2880W |
H |
90V |
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127V |
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power ratings are Watts per channel, both channels driven, 1kHz, 0.02% THD+N |
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Model |
1/8 power |
1/3 power |
Rack U |
Weight |
Idle (120V) |
1/8 Power |
1/3 Power |
Maximum* |
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CKi100s |
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612 |
780 |
2 |
26.63 / 12.09 |
.5A |
1.65A |
2.3A |
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3.5A |
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CKi200s |
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1100 |
1380 |
2 |
29.44 / 13.37 |
.6A |
3.0A |
4.2A |
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6.5A |
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CKi400s |
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2120 |
2820 |
2 |
30.44 / 13.82 |
.7A |
5.8A |
8.6A |
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12A |
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CKi800s |
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3584 |
4700 |
3 |
50.20 / 22.80 |
.7A |
10.0A |
14.8A |
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15A |
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CKi800-2s |
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1210 |
3600 |
3 |
70.65 / 32.08 |
.7A |
4.2A |
12.1A |
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20A |
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CKi1200s |
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3164 |
5040 |
4 |
70.65 / 32.08 |
1.3A |
9.6A |
17.3A |
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26A |
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CKi1600s |
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3154 |
6525 |
4 |
70.65 / 32.08 |
1.3A |
10.0A |
22.6A |
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30A |
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lbs / kg |
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* circuit breaker rating, 120 V / 4 Ω |
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