Crest Audio CK Manuel utilisateur

MODULE OWNERS MANUAL

Power

Processing

Modules

About Power Processing Modules

The rear panel of the CK family Power Processing ampliﬁers provides three bays (Input, Network

and Power/Output) conﬁgured to accept interchangeable plug-in modules.Your ampliﬁer may have

been factory-conﬁgured with some of the optional modules. The back page of this manual contains

an overview chart of all currently available Power Processing modules.

“CC-” Modules ﬁt into the Power/Output or Input module bays. These basic analog modules are

non-programmable and non-NexSys®compatible; only the Sequential Turn-On/Off (STO) function

can be controlled (through hardwiring).

“NC-” Modules can be controlled, programmed and/or monitored via the hand-held N-Coder, N-

Coder/PC software or over the NexSys network. Except for the STO feature, NC Modules are “tam-

per-proof” in that there are no user-accessible setup controls.

Programming NC Input Processing Modules

NC Input Processing modules can be programmed in OR out of the ampliﬁer.

Programming with the N-Coder

Connected to an Input Processing module’s data port via the supplied RJ14-RJ14 cable, N-Coder

automatically identiﬁes module type and displays only the parameters available for that module.

Users can then adjust parameters, audition the results, then store new settings in the module’s non-

volatile memory, or inside the N-Coder for later reference. Modules need not be powered, or even

installed in the ampliﬁer for programming; N-Coder provides the necessary power. Parameters can

also be created ahead of time without any modules attached, stored in the N-Coder, then downloaded

into the module’s memory later. Except for DSP modules, all NC Input Processing modules can be

programmed from an N-Coder.

Programming with N-Coder/PC software

N-Coder/PC Software, a Windows®-based program that conﬁgures all Input Processor NC modules,

will run on any PC with Windows ‘95 or 3.1. The computer’s parallel (printer) port is used with a

DB25 to RJ-14 adapter and cable (both supplied) that connects to the Input Processor NC module.

Programming with Octopus

Crest Audio’s LCP-AC8 “Octopus” is a one rack space, Locally Controlled Processor that adds

‘Snapshot’ capability to the CK family of Power Processing ampliﬁers. Octopus is compatible with

all NC Input Processing modules, and can activate functions including sequential power control,

level attenuation, analog EQ, crossovers, and all DSP parameters. The Octopus may be integrated

with third-party RS-232C system controllers.

Programming with NexSys

Using the appropriate NC Network module, NC Input and Power/Output modules can be controlled,

programmed and/or monitored remotely through the use of NexSys. NexSys is Crest Audio’s hard-

ware and software package that offers network connection of Crest Audio ampliﬁers and associated

devices, along with diagnostic facilities.

Input Processing Module Connections

The CK family of ampliﬁers come standard with a CC-IPB Input module. Barrier strip input con-

nectors and removable individual channel rotary attenuators are provided. All Input modules have

an internal voltage gain/input sensitivity jumper that is factory-set for X40 gain.

Input barrier strip lug / gauge information

Input barrier strips have a 0.325" (8.3mm) center and 0.270" (6.9mm) lug space. For connecting to

the input barrier strips, a wire gauge between 14 AWG (2.5mm2) & 24 AWG (0.25mm2), and spade

lugs (Panduit Part No. PNF 18-6LF-C or equivalent) are recommended.

Balanced vs. unbalanced inputs

Barrier strip inputs are ready to accept balanced sig-

nals. For use with an unbalanced source, tie the

inverting (minus) input to ground by installing a

jumper across the appropriate barrier strip terminals.

If the inverting input is left ﬂoating, a 6 dB loss in

gain will result.

AES/EBU Input

This XLR jack accepts a standard AES/EBU XLR

plug.

Daisy chaining

Some Input Processing modules have daisy-chained outputs, located on barrier strip terminals.

NC-AES and NC-DSP-D modules have balanced daisy chain outputs.

NC-DSP-A and NC-SEQ modules have unbalanced daisy chain outputs.

NC-MCO and NC-MEQ modules have unbalanced mono HP/LP daisy chain outputs.

The NC-SCO module has unbalanced stereo HP/LP daisy chain outputs.

NC-IPE page input & enable connections

Get information from engineering

Input Processing Module Attenuators

Operation

Channel attenuators (A&B) are used to control signal level. Ideally, the ampliﬁer should be operat-

ed with the controls at 0dB attenuation. When the ampliﬁer is being used in bridged mono mode,

both attenuators must at the same level.

Knob Removal

The attenuator knobs can be removed and replaced with blanking plugs.

The procedure for attenuator knob removal is as follows:

1. With an X-Acto or similar knife, pop off the grey key cap of the attenuator knob. This will reveal

the inside nut.

2. Using needle nose pliers or appropriate size nut driver, loosen and remove the inside nut.

3. Slide the attenuator knob off the shaft.

4. Insert a regular screwdriver in the slotted end of the shaft, and adjust attenuation to desired level.

5. Blanking plugs may now be inserted in the attenuator holes.

Input Barrier Strip

Level

Input A Input B

++–

–

346

Model

CC-IPB

SEE INSTRUCTION MANUAL

Input Level

Attenuators

Input Processing Modules - Internal Options

Input sensitivity/voltage gain jumper

Input modules have user-settable jumpers to conﬁgure Input Gain/Sensitivity. These internal

jumpers (two for CC-IPB, three for all input NC modules), labeled “W1 W2 W3”, are used to set

the overall gain of the ampliﬁer.

The 3 positions (shown at left) allow

the ampliﬁer to be set for constant gain

of X20 (26 dB), X40 (32 dB), OR con-

stant sensitivity for full output (.775V)

at 0 dBu input. The standard factory

setting is for X40 (32dB). All jumpers

must be set to the same position as

shown.

To change jumper settings, the Input

module must ﬁrst be removed from the

ampliﬁer.

Warning! Ampliﬁer must

be removed from AC

mains supply before this

operation is undertaken!

The diagram at left shows the location

of these jumpers on the CC-IPB mod-

ule. The diagram at the lower right

shows the location of the jumpers on

the NC-IPN module.

NexSys/N-Coder jumper

All NC Modules have internal jumpers used to set the module for operation with NexSys or N-

Coder. These jumpers are labeled “W4 W5” on the Input module circuit board.

The “NC-NXS” jumper position

allows operation with NexSys,

while the “NCODE” jumper posi-

tion permits the Input module to be programmed through N-Coder or N-Coder/PC software when

the ampliﬁer is off.

Note: Factory setting is the ‘NexSys’ position. If NexSys, N-Coder, or N-Coder/PC software is not

being used, jumper position will have no effect upon the operation of the ampliﬁer.

+26dB

0dBu Sen

+32dB

W2 W1 W3

W4W5

N-CODE

NC-NXS

CREST AUDIO

26C2797-02

Input Gain/Sensitivity Jumpers

Nexsys / N-Coder Jumpers

N-Coder Setup NexSys Setup

N-CODE

NC-NXS N-CODE

NC-NXS

CREST AUDIO

26C2197-02

Input Gain/Sensitivity Jumpers

+26dB

W2 A

0dBu IN

+32dB

+26dB

0dBu

+32dB

+26dB

0dBu

+32dB

+26dB

0dBu

+32dB

+26dB

0dBu

+32dB

.775V / 0 dBu (For Full Power) X20 (+26 dB)

Channel A Jumper

Channel B Jumper

NexSys Indicator Jumper (NC-IPN Only)

X40 (+32dB) Standard Factory Setting

+26dB

0dBu

+32dB +26dB

0dBu

+32dB

Swapping out Modules

Only jumper setting changes or module upgrades require modules to be removed from the ampliﬁ-

er. Contact Crest Audio Customer Service for full details on module removal. The ‘General Module

Setup’ diagram indicates the general setup of the rear panel module/bay conﬁguration.

Required Tools

A Phillips screw driver. Should the

module jumpers need to be changed

or removed, a pair of long nose or

needle nose pliers is also useful.

Precautions

Ampliﬁer is shown with the top

cut away for clarity only. Dangerous

voltages exist inside, and only a Crest

Audio-certiﬁed service technician

should remove the top cover!

Removable modules contain static-

sensitive devices; handle modules at

static-safe work stations! The ampliﬁ-

er MUST be switched off and the

mains plug removed from the supply

before module removal operation is

undertaken.

Removing or Replacing an Input Module.

Remove the four #8 3/8" Phillips pan head sheet

metal screws that secure the module to the chas-

sis. The module is connected electrically to the

ampliﬁer via multi-pin ribbon cables. Unplugging

the module from the ribbon cable connectors

frees the module for removal. To insert the same

or another module, simply reverse this procedure,

making sure that any ribbon cable connectors are

properly and securely seated. Note: The ampliﬁer

must not be operated without an Input module in

place.

Removing or Replacing a Network Module.

This process is the same as that for removing/replacing an

Input module. Be aware, though, that if an NC-NXS

Network module is being removed or replaced, four multi-

pin ribbon cables will need to be disconnected. Note:

Standard CK family ampliﬁers come with a blank panel

installed in the Network bay. The ampliﬁer must not be oper-

ated without a Network module or blank panel in place.

DO NOT attempt to replace or remove a Power/Output Module.This module can only

be serviced by a Crest Audio certiﬁed service technician. Please consult your deal-

er, Crest Audio representative, or Crest Audio Customer Service for assistance.

User-inﬂicted damage to this module will invalidate your warranty.

Model

NC-NXS

Data

Network Address

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

600W

800W

Crest Audio Inc.

100 Eisenhower Dr.

Paramus, New Jersey 07652 USA

Designed & manufactured in the USA by:

+– +–

Model

Name

CKV 100

CKV 200

CKV 400

CKV 800

CKV 1600

CKV 2400

Output Power

@70.7V

50W

100W

200W

400W

800W

1200W

CLASS 2 WIRING

MAY BE USED

Output

–

–Signal

Ground

Lift

Jumper

PUSH

Error

AES/EBU

SEE INST

N-Coder

Data

Port

Ribbon Cable from

Network Module, if fitted

Model

NC-IPN

Input A Input B

–

346

N-Coder

Data

Port

Level

SEE INSTRUCTION MANUAL

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

600W

800W

Model

NC-NXS

Data

Crest Audio Inc.

100 Eisenhower Dr.

Paramus, New Jersey 07652 USA

Designed & manufactured in the USA by:

Network

+– +–

Address

Model

Name

CKV 100

CKV 200

CKV 400

CKV 800

CKV 1600

CKV 2400

Output Power

@70.7V

50W

100W

200W

400W

800W

1200W

Network Module

If Load Monitoring is

employed, an additional ribbon

cable will be located here.

Input Module

Storing Unused Modules

Power Processing modules contain static-sensitive devices; therefore

unused modules must be stored in a static-safe environment, preferably at

normal room temperature!

Network Module Information

The CC-BLK (blank panel) comes standard with all ampliﬁers.

When a Network module (NC-NXS) is installed in this bay, network connection is made via a pair

of three-pin Phoenix-type connectors. They are wired in parallel, and form a loop-through connec-

tion. (Mates for these connectors are shipped with the Network module.) Network bus addressing is

accomplished through use of the Hi and LoAddress dials. See the NexSys Software manual for more

information on NexSys bus connection and conﬁguration.

Power/Output Module Speaker Connections

Speakers are connected using the Output Barrier Strip connectors. Spade lugs, ring tongues or bare

wire may be connected to the output barrier strip elements. Spade Lug measurements for Output

barrier strip are as follows: .44" (11mm) screw spacing, .32" (8mm) lug space. For output spade

lugs, Panduit Part No. PNF 14-8LF-C (or equivalent) is recommended. Make sure the ampliﬁer is

turned off before you change any output connections or jumpers. Also ensure that the load imped-

ance being connected is not less than the ampliﬁer's ability to drive it. See the CK family Power

Processing Ampliﬁer Manual for more information on speaker connection.

Service Information

For service, contact your nearest CrestAudio Service Center, Distributor, Dealer, or CrestAudio 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.

Sequential Turn-On/Off Connections

CK family ampliﬁers come standard with the CC-STL Sequential Turn-On/Turn-Off (STO)

Output/Power module installed. On this module, a four-pin Sequential Turn-On/Turn-Off (STO)

connector is supplied. A mating connector is shipped with the ampliﬁer. With the ampliﬁer front

power switch set to “remote”, a voltage of between +8 to +18VDC can be applied across the “Com”

and “+8 to +18V” terminals. When the voltage is on/available, a closure between the “In” and

“Com” terminals will turn the ampliﬁer on. Additional ampliﬁers are added to the turn-on chain by

looping from the “Out” terminal of one ampliﬁer into the “In” terminal of the next ampliﬁer.

Standard Sequential Turn-On/Turn-Off.

For CK family ampliﬁer systems conﬁgured for basic non-NexSys applications, (CC-IPB with CC-

STL) an external power supply is needed to provide a nominal +8 to +18 Volts to each STL mod-

ule. The number of CC-STL modules that an external DC supply will be able to power is dependent

on the power supply’s voltage output and current capability. Crest Audio’s external Direct Plug-In

Power Supply Unit (CC-WW1) supplies 9 volts at 300 milliamps and can power 15 CC-STL mod-

ules. Use only a two-wire power supply! If your conﬁguration requires the STO control of more than

15 ampliﬁers, contact Crest Audio Customer Service for more information. (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 family ampliﬁer are bussed together in parallel

and connected to the DC supply. The “Out” terminal of each CK ampliﬁer is connected to the “In”

terminal 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

initiate the power turn-on

sequence and keep the ampliﬁers

in the chain powered on.

Turn-on delay time between

ampliﬁers ﬁtted with basic mod-

ules (i.e., CC-STL) is approxi-

mately 100ms, turn-off delay time

is 200ms.

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)

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

CK family 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 ampli-

ﬁers should be used cautiously. If the switch closure output is wired up, it WILL cause the

next amp to switch, regardless of which source (hardware switch or NexSys STO) has ini-

tiated 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 family ampliﬁer) and an opto-isolated 3-wire output

to another CK 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’ ampliﬁers. The on/off closures can be either momentary or

constant contact.

Output

Com

Off

Com

Off

Out

Output

Com

Off

Com

Off

Out

NC-NXS

Off

Manually Initiated (hard-wired) Sequential

Turn-On/Off using NexSys-compatible

Power/Output Modules

NexSys-Initiated Sequential Turn-On/Off

using NexSys-compatible Power/ Output

Modules (unlimited # of ampliﬁers)

Crest Audio Inc.

100 Eisenhower Dr., Paramus NJ 07652 USA

TEL: 201.909.8700 FAX: 201.909.8744

http://www.crestaudio.com

Printed in USA

v. 1.1 11/6/97

Crest Audio reserves the right to make improvements in manufacturing or design which may affect speciﬁcations.

Crest Audio speciﬁcation literature is available in downloadable PDF ﬁle format; visit our website at

A3300044

Input Processing Modules Input Connection Daisy Chain Out Programmable Module Functions

CC-IPB B N/A N Gain Control

NC-AES A BS Y Gain Control

NC-DSP-A B UBS Y Analog Input DSP

NC-DSP-D A BS Y Digital Input DSP

NC-IPE B N/A Y Gain Control, Priority Page

NC-IPN B N/A Y Gain Control

NC-MCO B MXO Y Gain Control, 2-way Xover

NC-MEQ B MXO Y Gain Control, Mono EQ/2-way Xover

NC-SCO B SXO Y Gain Control, Stereo Xover

NC-SEQ B UBS Y Gain Control, Stereo EQ

NexSys Twisted Pair Data Computer Sequential

Network Modules Control Bus Connection Turn-On/Off Control

NC-NXS Y Y Y

Power/Output Modules NexSys-Compatible STO Connection Self-powered Advanced NexSys functions

CC-SDC N 4P N

CC-SIO N 6P Y

CC-STL N 4P N

NC-SAC Y 6P Y Voltage/Current Monitor

NC-SLM Y 6P Y Volt./Curr. & Load Monitor, Audio Return

NC-STI Y 6P Y

A-AES/EBU B-Barrier Strip 4P-Four Pin 6P-Six Pin

BS-Balanced, Stereo UBS=Unbalanced, Stereo MXO=Unbalanced Mono Crossover SXO-Unbalanced Stereo Crossover

Power Processing Modules - Overview

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