Instruction manual

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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.

Summary of content (8 pages)

PAGE 1
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.
PAGE 2
Input Processing Module Connections The CK family of amplifiers come standard with a CC-IPB Input module. Barrier strip input connectors 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.
PAGE 3
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 constant sensitivity for full output (.775V) +26dB at 0 dBu input.
PAGE 4
Swapping out Modules Only jumper setting changes or module upgrades require modules to be removed from the amplifier. 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.
PAGE 5
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 connection.
PAGE 6
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 +18 VDC can be applied across the “Com” and “+8 to +18V” terminals.
PAGE 7
Manual or NexSys-Compatible Sequential Turn-On/Turn-Off. CK family amplifiers fitted with a NexSys-compatible NC Power/Output Module (NC-STI, NCSAC, 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.
PAGE 8
Daisy Chain Out Programmable Gain Control Gain Control Analog Input DSP Digital Input DSP Gain Control, Priority Page Gain Control Gain Control, 2-way Xover Gain Control, Mono EQ/2-way Xover Gain Control, Stereo Xover Gain Control, Stereo EQ Module Functions 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 http://www.crestaudio.com.