background image

1

  Save the carton and packing material

even if the equipment has arrived in 
good condition. Should you ever need 
to ship the unit, use only the original 
factory packing.

2

  Read all documentation before operat-

ing your equipment. Retain all documen-
tation for future reference.

3

  Follow all instructions printed on unit

chassis for proper operation.

4

  Do not spill water or other liquids into

or on the unit, or operate the unit while 
standing in liquid.

5

  Make sure power outlets conform to

the power requirements listed on the 
back of the unit.

6

  Do not use the unit if the electrical

power cord is frayed or broken. The 
power supply cords should be routed 
so that they are not likely to be walked 
on or pinched by items placed upon or 
against them, paying particular attention 
to cords and plugs, convenience recep-
tacles, and the point where they exit 
from the appliance.

7

  Always operate the unit with the AC

ground wire connected to the electrical 
system ground. Precautions should be 
taken so that the means of grounding of 
a piece of equipment is not defeated.

8

  Mains voltage must be correct and the

same as that printed on the rear of the 
unit. Damage caused by connection to 
improper AC voltage is not covered by 
any warranty.

9

  Have gain controls on amplifiers turned

down during power-up to prevent 
speaker damage if there are high signal 
levels at the inputs.

0

  Power down & disconnect units from

mains voltage before making connec-
tions.

¡

  Never hold a power switch in the “ON” 

position if it won’t stay there itself!

Ô

  Do not use the unit near stoves, heat

registers, radiators, or other heat pro-
ducing devices.

£

  Do not block fan intake or exhaust

ports. Do not operate equipment on a 
surface or in an environment which may 
impede the normal flow of air around 
the unit, such as a bed, rug, weather-
sheet, carpet, or completely enclosed 
rack. If the unit is used in an extremely 
dusty or smoky environment, the unit 
should be periodically “blown free” of 
foreign 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 full output.

  Do not connect the inputs / outputs

of amplifiers or consoles to any other 
voltage source, such as a battery, mains 
source, or power supply, regardless of 
whether the amplifier or console is 
turned on or off.

ƒ

  Do not run the output of any ampli-

fier channel back into another channel’s 
input. Do not parallel- or series-connect 
an amplifier output with any other 
amplifier output. Crest Audio is not 
responsible for  damage to loudspeak-
ers for any reason.

ƒ

  Do not ground any + (“hot”) terminal. 

Never connect a + (“hot”) output to 
ground or to a (“hot”) output!

ª

  Non-use periods. The power cord of

equipment should be unplugged from 
the outlet when left unused for a long 
period of time.

Service Information 

Equipment should be serviced 
by qualified service personnel 
when:

A

. The power supply cord or the plug 

has been damaged;

B. 

Objects have fallen, or liquid has 

been spilled into the equipment;

C. 

The equipment has been exposed 

to rain;

D. 

The equipment does not appear to 

operate normally, or exhibits a marked 
change in performance;

E. 

The equipment has been dropped, 

or the enclosure damaged.

To obtain service, 

contact your nearest Crest Audio 
Service Center, Distributor, Dealer, 
or Crest Audio at 

(866) 812-7378

 

(USA).

This symbol is used to alert the 

operator to follow important 

operating procedures and pre-

cautions detailed in documenta-

tion. 

This symbol is used to warn 

operators that uninsulated 

“dangerous voltages” are present 

within the equipment enclosure 

that may pose a risk of electric 
shock.

Important Precautions

WARNING

THE  ON/OFF  SWITCH  IN  THIS  APPARATUS 
DOES NOT BREAK BOTH SIDES OF THE MAINS. 
HAZARDOUS ENERGY MAY BE PRESENT INSIDE 
THE ENCLOSURE WHEN THE POWER SWITCH IS 
IN THE OFF POSITION.

C

Kd 

Owner’s Manual 

CKd Series Owners Manual v1e

Page 

3

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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