Peavey CKS Series User Manual download pdf (Page 12)

Page 10 Crest Audio CK Power Processing Amplifiers

Service Information. For service, contact your nearest Crest Audio Service Center, Distributor, Dealer, or any of the worldwide Crest Audio

offices, or contact Crest Audio Inc. Customer Service directly at: TEL. 201.909.8700 (USA) Fax. 201.909.8744 (USA).

For technical inquiries only, the Crest Audio Technical Services Dept. can be faxed at 201.587.0550 (USA). Crest Audio may also

be contacted on the World Wide Web at: http://www.crestaudio.com.

Standard Sequential Turn-On/Turn-Off Wiring.

For CK Power Processing amplifier systems configured

for basic non-NexSys applications, (CC-IPB with CC-

STL) an external Direct Plug-In Power Supply Unit is

needed to provide a nominal +8 to +18 Volts to each

STL module. Use only a two-wire power supply! This

power supply (part number CC-WW1) may be ordered

from Crest Audio . (Note that module CC-SDC has an

integral STO power supply, and does not require CC-

WW1). The “Com” and “+8 to+18V” terminals on each

CK Power Processing amplifier are bussed together in

parallel and connected to the DC supply. The “Out” ter-

minal of each CK amplifier is connected to the “In” ter-

minal of the next CK amplifier in the turn-on sequence.

The first amplifier in the chain requires an SPST closure

between it’s “In” terminal and “Com” terminal to initi-

ate the power turn-on sequence and keep the amplifiers

in the chain powered on.

Output

Com

Off

Com

Off

Out

Output

Com

Off

Com

Off

Out

NC-NXS

Off

Com

Out

+8 to 18VDC

20 mA

NEC

CLASS 2 ONLY

Com

Out

+8 to 18VDC

20 mA

NEC

CLASS 2 ONLY

LISTED 8B42

COMMERCIAL

POWER

AMPLIFIER

120V~60 Hz 15A

LISTED 8B42

COMMERCIAL

POWER

AMPLIFIER

120V~60 Hz 15A

CC-WW1

Direct Plug-In

Power Supply Unit

+8 (min) to +18VDC (max)

Standard Sequential

Turn-On/Off

(max. # of amplifiers is

15 per CC-WW1)

Manually Initiated (hard-wired)

Sequential Turn-On/Off using

NexSys-compatible

Power/Output Modules

When employing NexSys-compatible

Power/Output modules, use either

NexSys-initiated Sequential Turn-

On/Off OR (three-wire) hard-wired

Sequential Turn-On/Turn-Off; NOT

BOTH!

NexSys-Initiated Sequential Turn-

On/Off using NexSys-compatible

Power/ Output

Modules

(unlimited #

of amplifiers)

Manual or NexSys-Compatible Sequential Turn-On/Turn-Off Wiring.

CK Power Processing amplifiers fitted with a NexSys-compatible NC

Power/Output Module (NC-STI, NC-SAC, NC-SLM) may be powered up via

NexSys OR with a manual switch closure. If NexSys is employed, the STO delay

time is also software-controllable. Note: when using NexSys control, hard-wiring

for manual switch closure between amplifiers should be used cautiously. If the

switch closure output is wired up, it WILL ¨cause the next amp to switch, regard-

less of which source (hardware switch or NexSys STO command) has initiated

the command.

The modules (and the non-NexSys compatible CC-SIO) feature a 6-pin connector

providing a 3-wire input from switch closures (or from a CK Power Processing

amplifier) and an opto-isolated 3-wire output to another CK Power Processing

amplifier. The 3-wire signals are: ON, OFF, and COM. To initiate either the ON

or OFF function manually, simply provide a closure from the proper signal line to

COM; after a time delay of approximately 200ms, the closure is echoed on the 3

isolated output signal pins to initiate the turn-on function in 'downstream' ampli-

fiers. The on/off closures can be either momentary or constant contact.

Sequential Turn-On/Turn-Off.

CK Power Processing amplifiers come standard with the CC-STL Sequential Turn-On/Turn-Off (STO) Output/Power module installed. If the

amplifier front power switch is set to “remote” and a voltage of between +8 to +18 VDC is applied across the “Com” and “+8 to +18V” termi-

nals, a closure between the “In” and “Com” terminals will turn the amplifier on. Additional amplifiers are added to the chain by looping from

the "Out" terminal of one amplifier into the "In" terminal of the next amplifier.

Turn-on delay time between amplifiers fitted with basic modules (i.e., CC-STL) is approximately 100ms, turn-off delay time is 200ms. (When

using NexSys-controlled Power/Output modules, these standard turn-on and turn-off delay times may be modified in the software). The number

of CC-STL modules that an external DC supply will be able to power is dependent on the supply's voltage output and current capability. The

external Direct Plug-In Power Supply Unit (CC-WW1, available from Crest Audio) supplies 9 volts at 300 milliamps and can power 15 CC-

STL modules. If your configuration requires the STO control of more than 15 amplifiers, contact Crest Audio.

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Peavey CKS Series User Manual Page 12

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