Peavey CKS Series User Manual download pdf (Page 5)

Crest Audio CK Power Processing Amplifiers Page 3

Unpacking.

Upon unpacking, inspect the amplifier. If you find any damage, noti-

fy 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 clear-

ly 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, par-

allel, 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.

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 perma-

nent 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

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 CC-

STL 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 ampli-

fier 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) mount-

ed 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.

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.

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Peavey CKS Series User Manual Page 5

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