Crest Audio CKS-100, CKS-1600 Mk2, CKS-1200 Mk2, CKS-200, CKS-800 Owners manual
...
POWER PROCESSING
AMPLIFIERS
Protect
ACL
On
Off
Remote
Active
Protect
On
Off
Remote
Active
Protect
On
Off
Remote
Active
ACL
Ch B
Ch A
Signal
Signal
ACL
ACL
Ch B
Ch A
Signal
Signal
ACL
ACL
Ch B
Ch A
Signal
Signal
CKS 800
Professional Power Amplifier
CKV 80 0
Professional Power Amplifier
CKX 500
Professional Power Amplifier
OWNER’S MANUAL
Important Precautions
This symbol is used to alert the operator to follow important operating
procedures and precautions detailed
in documentation.
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.
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 operating your equipment. Retain all doc-
umentation 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
receptacles, 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 connec-
tion 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.
10. Power down & disconnect units from
mains voltage before making connections.
11. Never hold a power switch in the
“ON” position if it won’t stay there
itself!
12. Do not use the unit near stoves, heat
registers, radiators, or other heat
producing devices.
13. 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,
weathersheet, 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.
14. Do not remove the cover. Removing
the cover will expose you to potentially
dangerous voltages. There are no user
serviceable parts inside.
15. Connecting amplifier outputs to
oscilloscopes or other test equipment
while the amplifier is in bridged mode
may damage both the amplifier and test
equipment!
16. Do not drive the inputs with a signal
level greater than that required to
drive equipment to full output.
17. 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.
18. Do not run the output of any amplifi-
er 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 loudspeakers for any reason.
19. Do not ground any + (“hot”) termi-
nal. Never connect a + (“hot”) output
to ground or to another + (“hot”)
output!
20. Non-use periods. The power cord of
equipment should be unplugged from
the outlet when left unused for a long
period of time.
21. 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.
22. To obtain service, contact your near-
est Crest Audio Service Center,
Distributor, Dealer, or Crest Audio at
201.909.8700 (USA).
Power Amplifier Owner’s Manual
Table of Contents.
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Quick Set-Up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Installation and Mounting . . . . . . . . . . . . . . . . . . . . . . . . 3
Front Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Side Panels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Input Bay. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Input Module Jumpers. . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Network Bay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Power/Output Bay. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Module Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Signal Ground Lift Jumper . . . . . . . . . . . . . . . . . . . . . . . 8
®
TourClass
Protection Features . . . . . . . . . . . . . . . . . . . . 9
Sequential Turn-On/Off. . . . . . . . . . . . . . . . . . . . . . . . . 10
Service Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
CKS Series Specifications. . . . . . . . . . . . . . . Appendix A
CKV Series Specifications. . . . . . . . . . . . . . . Appendix B
CKX Series Specifications. . . . . . . . . . . . . . . Appendix C
Wire Gauge Charts. . . . . . . . . . . . . . . . . . . . . Appendix D
Distributed/Constant Voltage Systems. . . . . . Appendix E
Crest Audio CK Power Processing Amplifiers Page 1
Introduction.
Congratulations on your purchase of a Crest Audio CK family of
Power Processing amplifiers. Please read this manual carefully (especially the the “Important Precautions” section located inside the front
cover) as it contains information vital to the safe operation of the
amplifier. Also, please fill out and return the enclosed product registration card.
The CK Power Processing amplifiers represent new levels of value
and flexibility never before offered to the contracting market. CKS
Series models are specially designed to drive low impedance speaker
loads - down to two ohms with “-2” models,. CKV Series models feature a unique proprietary front end circuit to provide directly coupled
70.7 volt outputs, eliminating the need for step-up transformers. CKX
Series models feature transformer-isolated outputs for 100V operation (50V optional). Together, these amplifiers cover almost every
conceivable installed or distributed sound power requirement.
Front View
Cooling
Air
Intake
On
Off
Remote
Protect
Active
Signal
ACL
ACL
Signal
By combining legendary Crest performance with three unique plug-in
module bays located on the rear panel, these amplifiers can become
very sophisticated audio processors. The CK family is everything that
you expect from Crest Audio. They are ruggedly built from high quality components, intelligently laid out, and possess comprehensive protection features.
After-sale support is considered paramount at Crest Audio. For any
assistance in the set-up or operation of this product please call Crest
Audio’s Customer Service department or your local Crest Audio representative. Should you have any problems at all, or suggestions that
may help us improve 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.
4U-6.94" / 176mm
CKS1200-2
CKS1600-2
CKV1600
CKV2400
3U-5.13" / 130mm
CKS800
CKX150
CKS800-2
CKX300
CKV800
CKX500
CKX800
2U - 3.44" / 87mm
CKS100 CKV100
CKS200 CKV200
CKS400 CKV400
CKS 400
Professional Power Amplifier
1
Side View
4U-6.94" / 176mm
CKS1200-2
CKS1600-2
CKV1600
CKV2400
3U-5.13" / 130mm
CKS800
CKS800-2
CKV800
2U - 3.44" / 87mm
CKS100 CKV100
CKS200 CKV200
CKS400 CKV400
19"
234 5 6 7
CKX150
CKX300
CKX500
CKX800
Heated Air Exhaust
1
Heated Air Exhaust
8
17.125"/435mm
Page 2 Crest Audio CK Power Processing Amplifiers
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.
Amplifier Quick Set-Up.
Crest Audio CK 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 standard with modules as follows:
Input Bay: CC-IPB Module.
Network Bay: CC-BLK (Blank) Module.
Power/Output Bay: CC-STL Module.
To set the amplifier up for basic usage:
1. Rack mount the amplifier in the location where it is to be used,
remembering to allow for adequate access and cooling space. For
more information, see the sections on Installation, Mounting, and
Cooling Requirements.
2. Make input connections to the input barrier strips on the Input
Module. Be sure to make the correct connections for stereo, parallel, or bridged mono configuration. See the sections on Mode
Configuration and Input Module Connections and Controls for
more information.
3. Connect speakers to the output barrier strips on the Power/Output
Module. Be sure to make the correct output connections for
stereo, parallel or bridged mono configuration. See the section on
Power/Output Module Connections for more information.
4. Make power connections, allowing for proper current draw. See
the section on Connecting Power/Circuit Size Requirements for
more information.
5. Turn the front panel three-position AC switch to 'on', and bring
up the rear panel gain attenuators to the desired levels.
Front Panel.
1. Rack Mounting Ears.
Two to four mounting holes are provided on each front mounting
ear.
2. Three-position AC Power Switch.
A three-position switch is on the front panel. With the switch pushed
towards the upper position the amplifier is On. The middle position
is Off and the lower position is marked Remote. When switched to
Remote, the amplifier must be activated by the sequential turn
on/turn off (STO) circuit. (CK amplifiers are shipped with the CCSTL Power/Output module standard, which permits STO. If NexSys
compatible modules are used, STO can also be performed under
NexSys computer control.) When a voltage of +8 to +18V DC is
applied to the rear-mounted STO terminal and the “In” terminal is
connected to the “Com” terminal, the amplifier will turn on. When
no voltage is present or the In-Com connection is opened, the amplifier will switch off. Other CK Power Processing amplifiers can be
“daisy-chained” together and will turn on at 200ms intervals. See the
section on Sequential Turn-On/Turn-Off for more information about
STO.
3. Protect LED.
If the amplifier is in Protect mode, the output relay will open, and
this LED will light.
4. Active LED.
The Active LED indicates the amplifier is turned on.
5. Signal LED.
Each channel has a Signal LED, which comes on gradually, first
dim, and then brighter as the signal level increases.
6. ACL LED.
Each channel has an ACL (Active Clip Limiting) LED. This LED
comes on at the clipping point, and indicates that ACL is engaged.
See the section on TourClass Protection for more information.
7. Fan Grill & Filter.
A high-efficiency DC fan (with continuously variable speed) mounted behind the fan filter & fan intake grill draws cooling air into the
amplifier. Do not block this intake! The fan operates only when the
amplifier heatsinks require cooling. Fan filters are easy to remove
and must regularly be cleaned to ensure optimum performance.
Installation and Mounting.
CK Power Processing amplifiers are 2, 3 & 4-rack space units of 17
1/8" (437mm) depth that mount in a standard 19-inch rack. On all
amplifiers except 4-rack space units, four front panel mounting holes
are provided. (4-rack space units have eight front panel mounting
holes). Rear mounting ears are also provided on all amplifiers for
additional support, which is essential in non-permanent installations
like mobile or touring sound systems, but recommended for permanent installations as well.(Distance from the back of the front rack
ear to the center of the rear mounting ear holes is 16 5/8" / 422mm )
Because of the cables and connectors on the rear panel, a right-angle
or offset screwdriver or hex key will make it easier to fasten the rear
mounting ears to the rails. Dimension drawings are included on page
4.
Crest Audio CK Power Processing Amplifiers Page 3
Side Panels.
8. Exhaust Ports.
Heated air exits through the exhaust ports, located on the sides of the
amplifier chassis. Do not block these ports when rack-mounting the
amplifier. See Side View.
Rear Panel.
Module Bays & Modules.
The rear panel of CK Power Processing amplifiers provides three
bays (Input, Network and Output/Power) configured to accept interchangeable plug-in modules. Your amplifier may have been factoryconfigured with some of the optional modules. In this case, info 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.
About CC Modules and NC Modules.
CC modules fit into the Power/Output or Input module bays in the
rear panel of CK Power Processing amplifiers. These "basic" analog
modules are non-programmable and non-NexSys
the STO function can be controlled (through hardwiring).
NC Modules can be controlled, programmed and/or monitored. They
fit into the rear panel of the amplifiers. NC Input Modules can be
controlled and/or programmed over the NexSys network or via the
N-Coder (Hand-Held) or N-Coder/PC software. (NexSys is Crest
Audio’s hardware and software package that offers network connection of Crest Audio amplifiers and associated devices.). NC Input
and NC Output/Power Modules are NexSys-compatible. Using
NexSys with the appropriate NC Network Module, NC Input and
Output/Power Modules can be controlled, programmed and/or monitored remotely. NexSys also offers a number of diagnostic facilities.
On the NC Input Modules, the individual channel attenuators offer
manual level adjustment and removable knobs for additional security. Except for the STO feature, NC Modules are “tamper-proof” in
that there are no user-accessible setup controls.
9. Circuit Breaker.
A re-settable, protective AC circuit breaker is located at the upper
left of the amplifier rear panel. Two and three rack space amplifiers
have a push-type breaker fitted, while four rack space units have a
throw-switch style breaker. If the breaker has tripped, push it back in
(or, in the case of four rack space units, flip the breaker up) to return
the amplifier to operating condition. If the breaker trips repeatedly,
the amplifier needs servicing.
10. IEC Power Connector with removable Power Cord or
Captive Power Cord.
On two rack space amplifiers, a standard IEC power connector is
located at the lower left corner of the amplifier rear panel. An AC
mains cord having an appropriate AC plug for the intended operating
voltage is included. Three and four rack space units have a captive
power cord.
11. Power/Output Bay.
All Power/Output modules (CC-STL module is shipped standard)
provide a ground lift jumper, barrier strip output connectors, and
connections for sequential turn-on /off (STO) activation.
®
compatible; only
A barrier strip is provided for connection of loudspeakers with bare
wire or spade lug connectors. A signal ground lift jumper permits the
audio ground to be lifted from the chassis ground. For more informa-
tion see the sections on Signal Ground Lift Jumper, Module
Removal, and Sequential Turn-On/Turn-Off.
12. Network Bay.
The CC-BLK (blank panel) comes standard with all amplifiers. See
the section on Replacing or Installing a Network Module for more
information.
13. Input Bay.
CK Power Processing amplifiers come standard with a CC-IPB Input
module. Barrier strip input connectors and individual channel rotary
attenuators are provided. All Input modules have an internal voltage
gain/input sensitivity jumper that is factory-set for X40 gain. See the
sections on Input module Connections and Removing or Replacing
an Input module for more information.
Operation.
Connecting Power/Circuit Size Requirements.
CK Power Processing amplifier power requirements are rated at
“idle”, 1/8th power (“typical” music conditions), 1/3rd power, and
maximum rated power. The maximum power current draw rating is
limited by the amplifier's circuit breaker. Consult the specifications
at the end of this manual for the current that each amplifier will
demand. AC mains voltage must be the same as that indicated on the
rear of the amplifier. Damage caused by connecting the amplifier to
improper AC voltage is not covered by any warranty. Note: Always
turn off and disconnect the amplifier from the mains voltage before
making audio connections. If possible, as an extra precaution, have
the attenuators turned down during power-up.
Cooling Requirements.
CK Power Processing amplifiers use a forced-air cooling system to
maintain a low, even operating temperature. Drawn by a continuously-variable-speed fan mounted behind the front panel, air enters
through the front grill and courses through the cooling fins of the
heat sink, (which dissipates power transistor heat), before exiting
through the side panel ports. The fan will remain inactive until operating temperature rises above 45° C. 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 4 for intake
and exhaust locations. Note: If the amplifier is rack-mounted, do not
use doors or covers on the front or rear without pressurizing the
rack. Whatever type of rack you are using, make sure that heated air
can escape freely, and that there is no resistance to the intake of cool
air through the front grill. Intake and exhaust air must flow without
resistance. Ensure that fan filters are regularly cleaned and periodically replaced. (No tools are required for filter removal).
Rear
View
LISTED 8B42
COMMERCIAL
POWER
AMPLIFIER
120V~60 Hz 15A
In
Out
Com
+8 to +18VDC
20 mA
NEC
CLASS 2 ONLY
Model
CC-STL
CLASS 2 WIRING
MAY BE USED
Output
–
A
+
+
B
–
Signal
Ground
Lift
Jumper
Model
Output Power
Name
@70.7V
CKV 100
50W
CKV 200
100W
CKV 400
200W
CKV 800
400W
CKV 1600
800W
CKV 2400
1200W
Designed & manufactured in the USA by:
Paramus, New Jersey 07652 USA
Crest Audio Inc.
100 Eisenhower Dr.
Model
Name
CKS 100
CKS 200
CKS 400
CKS 800
CKS 800-2
CKS 1200-2
CKS 1600-2
Output Power
@8Ω/Ch.
50W
100W
200W
400W
400W
600W
800W
Model
CC-BLK
5
Level
4
6
A
3
7
2
8
1
9
0
10
5
Level
4
6
B
Model
CC-IPB
3
7
2
8
1
9
0
10
Input A
Input B
–
–
+
+
11 12 13109
Page 4 Crest Audio CK Power Processing Amplifiers
Loading...