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       CKd Owner’s Manual 

Installation 

Getting Started 

This  section  covers  the  basics  for  setting  up  CKd  amps.  Refer  to  this 

section  in  order  to  get  the  amplifier  up  and  running  quickly

.

  Pay  special 

attention  to  the  Requirements  and  Considerations  section.  It  contains 

important  information  concerning  the  operating  conditions  necessary  to 

operate the CKd in a safe and stable fashion. Also be sure to refer to the 

Precautions page at the front of this manual for additional safety warnings. 

Unpacking 

Upon unpacking, inspect the amplifier. If you find any damage, notify your 

supplier  immediately.  Only  the  consignee  may  institute  a  claim  with  the 

carrier for damage incurred during shipping. Be sure to save the carton and 

all packing materials. Should you ever need to ship the unit back to Crest 

Audio,  one  of  its  offices,  service  centers,  or  the  supplier,  use  only  the 

original factory packing. If the shipping carton is unavailable, contact Crest 

to obtain a replacement. 

Installation and Mounting 

Crest Audio CKd Power Processing amplifiers are configured to a standard 

set-up at the factory. They are functional and ready to use ‘out of the box.’

 

All  controls  and  input/output  connections  are  clearly  labeled. 

Units  are 

shipped either with a network module or blank panel over the module bay.

To Set The Amplifier Up For Basic Usage: 

1. Rack mount the amplifier, remembering to allow for adequate access

and  cooling  space.  For  more  information,  see  the  section  titled 

Cooling Requirements in this section. 

2. Make  input  connections  to  the  mini  Euroblock  connector  inputs.

Make  the  connections  to  all  inputs  for  normal  operation.  Refer  to 

Input  Sources  and  Output  Configuration  in  the  Amplifier  Operation 

section for more information. 

3. Connect speakers to the output barrier strip.  Refer to Output

Connections in the Amplifier Operation section for more information. 

4. Make AC power connections, allowing for 

rated

 current draw.

5. Turn  the  front  panel  three-position  switch  to  ‘On’,  and  bring  up  the

rear panel gain attenuators to the desired level.

For replacement 

packaging, call Crest 

Audio’s

Customer Service 

Department directly.   

See service and support 

Always turn off and 

disconnect the amplifier 

from mains voltage 

before making audio 

connections. Also, as an 

extra precaution, have 

the attenuators turned 

down during power-up. 

CKd Series Owners Manual v1e

Page 

5

Содержание CKd Series

Страница 1: ...608 608 ...

Страница 2: ...h the limits for a Class B digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there...

Страница 3: ...n matter Do not remove the cover Removing the cover will expose you to potentially dangerous voltages There are no user serviceable parts inside ˆ Connecting amplifier outputs to oscil loscopes or other test equipment while the amplifier is in bridged mode may damage both the amplifier and test equipment Do not drive the inputs with a signal level greater than that required to drive equipment to f...

Страница 4: ... 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 cha...

Страница 5: ... the factory They are functional and ready to use out of the box All controls and input output connections are clearly labeled Units are shipped either with a network module or blank panel over the module bay To Set The Amplifier Up For Basic Usage 1 Rack mount the amplifier remembering to allow for adequate access and cooling space For more information see the section titled Cooling Requirements ...

Страница 6: ...d cools the amplifier s power MOSFET s Heated exhaust air exits through the side panel ports Fan is on at low speed with switch on Standby Fan speed increases when switched to On Make sure that there is enough space around the front of the amplifier to allow air to enter and around the sides to allow the heated air to exit See page 11 for intake and exhaust locations Note If the amplifier is rack ...

Страница 7: ...Power Supply 2 The PS2 LED when fully lit indicates that power supply 2 is active PS2 powers channels 5 through 8 When both the PS1 and PS2 LED s are blinking fast it indicates an Amplifier Level Fault Amplifier Level Faults include AC Voltage Faults Low Voltage DC Rail Faults Fan Faults When only the PS2 LED is blinking slowly it indicates a Power Supply 2 Level Fault Power Supply 2 Level Faults ...

Страница 8: ...Fan Filter A high efficiency DC fan draws cool air into the amplifier though the safety grill and removable dust filter Do not block this intake The variable speed fan operates when the unit is Active Fan filters are easy to remove and should be cleaned regularly to ensure optimum performance 11 Power Supply 1 Breaker Magnetic circuit breaker for power supply 1 which powers channels 1 through 4 12...

Страница 9: ...t See Page 14 5 Channel Attenuators Each channel has an attenuator knob to adjust the channel s output from to 0 dB When set to the channel is deactivated and the Active LED will turn off To improve power and thermal performance it is recommended to deactivate unused channels 6 Amplifier Output Connectors Barrier strips provide speaker level output connections High voltages are present at these te...

Страница 10: ...nal information on the relevant modules will be enclosed in the amplifier box or in a separate binder If all required information is not included please call Crest Audio s Customer Service department or your local Crest Audio representative 10 Relay Fault Outputs Each channel has a Fault output contact closure When a channel fault occurs this contact closure will engage These contact closures can ...

Страница 11: ...t the impedance of the load being connected is not less than the amplifier s recommended minimum load Output Configuration In standard channel mode all channels operate independently Individual input attenuators control the respective levels of each channel By default signal at Channel 1 input produces output at Channel 1 output while signal at Channel 2 input produces output at Channel 2 output a...

Страница 12: ... used to turn the amplifier on and off Using the same switch es additional amplifiers can be turned on off sequentially by daisy chaining the STO Out terminals of one amplifier to the STO In terminals of a subsequent amplifier The standard turn on delay time between amplifiers is approximately 100ms turn off delay time is 200ms Note when using NexSys or NWare control hardwiring for manual switch c...

Страница 13: ...ary Switches Any number of CKd Ci CKi or CKS V X amplifiers can be daisy chained together for sequential turn on Wiring two amplifiers for STO is as simple as connecting the On Com and Off pins of the STO Out connector on the first amplifier to the corresponding pins on the STO In connector on the second amplifier Repeating this wiring scheme with subsequent amplifiers allows entire systems of CKd...

Страница 14: ...hannel s Active LED will turn off and the channel Fault LED will light if this occurs Once adequately cooled the amplifier channel will resume operation automatically A thermal limiter option is available to further protect channels from shutting down due to thermal faults The thermal limiter will activated when a channel approaches its thermal limit This is indicated by a dimly lit ACL IGM LED Wh...

Страница 15: ...y to the amplifier with a single multi pin ribbon cable Once unscrewed from the chassis unplugging the module from this ribbon cable frees the module for removal To insert a module simply reverse this procedure Note Standard CKd Power Processing amplifiers come with a blank panel installed in the Network bay The amplifier must not be operated without a Network module or blank panel in place Servic...

Страница 16: ...side of the panel Save these screws as they will be needed for fastening the network module 2 Inside the exposed module bay you should see the ribbon cable connector on the amplifier s circuit board Note of the way the connector is keyed and position the ribbon cable to match Insert the cable into the connector with the opposite end hanging out of the module bay 3 Position the network module right...

Страница 17: ... to select parameters within a given function 4 Function Button This button scrolls through the functions that can be controlled from the module panel including I P Address Amp ID Gain Temperature AC Line Voltage As each is selected the corresponding LED wil light and the appropriate function parameter will appear in the display 5 Increment Decrement Buttons When the module is in edit mode and the...

Страница 18: ...lue and exit edit mode If another octet value must be changed select it using the Select button and repeat the editing procedure Setting the I P Address to 000 000 000 000 will enable DHCP for this amplifier Under this setting a connected DHCP server will dynamically assign an I P Address to the amplifier Setting Amplifier ID Use the Function button to choose Amp ID Each Amp ID is composed of two ...

Страница 19: ...setting of the amplifier s attenuators will also affect the overall gain The attenuators are positioned after the NexSys gain control in the amp s gain structure resulting in an additive attenuation value For example if an attenuator is set to 6dB and the NexSys gain for that channel is set to 10dB the amplifier s overall gain will be 16dB below the amplifier s maximum output Condition Monitoring ...

Страница 20: ...ex uses sixteen digits all of the numerals used in the decimal system plus the first six letters of the alphabet Therefore counting from zero in hex one has 0 1 2 3 4 5 6 7 8 9 A B C D E and F Remember the digits are just symbols representing a value they could be numerals letters hieroglyphs dots of different colors anything This is important to keep in mind because many systems including the thr...

Страница 21: ...tirely dependent on the base of the numbering system being used Other binary values 100011 b 1 32 0 16 0 8 0 4 1 2 1 1 32 0 0 0 2 1 35 1000010000 b 1 512 0 256 0 128 0 64 0 32 1 16 0 8 0 4 0 2 0 1 512 0 0 0 0 16 0 0 0 0 528 11111111110 b 1 1024 1 512 1 256 1 128 1 64 1 32 1 16 1 8 1 4 1 2 0 1 1024 512 256 128 64 32 16 8 4 2 0 2046 Of course a similar approach can be applied to hex However this tim...

Страница 22: ...5 6 2 9 1 74 1 09 28 19 9 10 8 6 7 4 3 2 9 0 75mm2 1 5 2 5 4 6 10 15 5 8 2 5 1 3 2 2 2 1 31 0 73 15 5 9 8 6 3 4 3 2 6 45 28 18 2 12 0 8 2 5 1 2meters 5meters 10meter s 30meters Wire Gauge Power Loss 8Ω load 4Ω load 2Ω load Wire Gau Stranded Cable Length 18AWG 16 14 12 10 0 81 0 51 0 32 0 20 0 128 1 61 1 02 0 64 0 40 0 25 3 2 2 0 1 28 0 80 0 51 18AWG 16 14 12 10 1 61 1 02 0 64 0 40 0 25 3 2 2 0 1 2...

Страница 23: ...multaneously initialize During Channel Initialization all channels will simultaneously activate lighting the Active LED The channel is now active If a channel does not activate make sure the attenuation knob is turned up and that the channel is not deactivated in software There are three levels of Faults Device Faults Power Supply Faults and Channel Faults Device Faults are ones that affect the en...

Страница 24: ...e LED PS2 Voltage Fault CH6 Mute LED PS2 Bias Voltage Fault CH7 Mute LED PS2 Breaker Tripped CH8 Mute LED PS2 DC Fault Please note When only one of the two PS LED s is blinking a Power Supply Fault occurred on that supply When both PS LED s are alternately blinking a Power Supply Fault occurred on both supplies When both PS1 and PS2 LED s are blinking simultaneously a Device Fault occurred Channel...

Страница 25: ... for transformer insertion loss P X xfrmr 1 P speaker 1 X xfrmr 2 P speaker 2 and V is the distributed line voltage So for a 70 7 volt line Z 70 7 2 P Z 5000 P For example if the total power demanded by the speakers is 200 watts then V2 P 25 The compensation factor for transformer insertion loss is x power drawn from distributed line power delivered to speaker 10 Insertion loss in dB 10 Therefore ...

Страница 26: ...hannels btu hour Idle 677 btu hr 1 8 Power 8 ohms 4 ohms 1060 1170 1 3 Power 8 ohms 4 ohms 2115 2330 Cooling Controls Front Rear Indicator LEDs Front panel Rear panel Channel Protection per channel fault Power Supply Protection PS1 channels 1 4 PS2 channels 5 8 Unit Protection device fault Connectors Input Output Construction Dimensions Height 3 48 8 84 cm 2 EIA rack spaces Width front 19 00 48 26...

Страница 27: ......

Страница 28: ...s applied only to equipment manufactured after 13 August 2005 www peaveycommercialaudio com Warranty registration and information for U S customers available online at www peavey com warranty or use the QR tag below Features and specifications subject to change without notice Crest Audio 5022 HWY 493 N Meridian MS 39305 601 483 5365 FAX 601 486 1278 ...

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