Crest audio NC-SEQ DATASHEET

Power
Processing

INPUT PROCESSING MODULE

Modules

FOR CKS, CKV & CKX SERIES

POWER PROCESSING AMPLIFIERS

NC-SEQStereo Parametric EQ

Product Information

The NC-SEQ Module fits in the Input Processing bay located on the rear
panel of Crest Audio CKS, CKV & CKX Series Power Processing
amplifiers.

The NC-SEQ is a high quality four-band stereo parametric EQ. Each
band of the equalizer has programmable boost/cut, bandwidth and fre­quency parameters.

Features:

• Two (2), four-band parametric EQ’s with programmable boost/cut, bandwidth and frequency parameters

• All parameters (including precision attenuation settings) programmable via NexSys , hand-held N-Coder or N-Coder/PC software

• Balanced inputs and loop-thru outputs on barrier strip connectors with .325" (8.3mm) screw center, .270" (6.9mm) lug space

• Removable gain pot knobs for security

Internal Features:

• Jumper-selectable gain of X20 (26 dB), X40 (32 dB, factory setting), or constant sensitivity for full output at 0dBu (.775V) in.

Unbalanced post-EQ loop-thru barrier strip connectors provide conve­nient outputs to other amplifiers. An internal jumper selects between
gains of X20 (26 dB), X40 (32 dB), or constant sensitivity for full output
at 0dBu (.775V) in. The standard factory setting is for X40 (32dB).
Individual channel attenuators are provided with removable knobs for
extra security. The NC-SEQ is programmable via NexSys
held N-Coder or N-Coder/PC software. (NexSys-compatible
Power/Output and Network NC modules are required for NexSys imple­mentation.)

®

, the hand-

NC-SEQ connections

tial

odel
C-STI

CLASS 2

WIRING MAY

n

BE USED

Output

–

A

+

+

B

–

Signal
Ground
Lift
Jumper

Designed & manufactured in the USA by:

Model
Name

CKV 100
CKV 200
CKV 400

CKV 800
CKV 1600
CKV 2400

Network

+–

NexSys Bus

PC Lap-Top running

N-Coder/PC software

Crest Audio Inc.
100 Eisenhower Dr.
Paramus, New Jersey 07652 USA

Model

Output Power

@70.7V

50W
100W
200W
400W
800W

1200W

+–

Data

Name

CKS 100
CKS 200
CKS 400
CKS 800

CKS 800-2
CKS 1200-2
CKS 1600-2

Output Power

1

2

3

4

5

6

7

Hi

@8Ω/Ch.

50W
100W
200W
400W
400W
600W
800W

Address

F

E

D

C

B

A

9

8

N-Coder

Crest Audio
Revision 1.03E

OR

To other amplifiers

N-Coder
Data
Port

Model
NC-NXS

F

1

E

2

D

3

C

4

B

5

A

6

9

7

8

Lo

Daisy Chain

A

Input A

+

Input

Signal A

–

B

Input B

–

+

Input

Signal B

Level

Level

Model
NC-SEQ

5

4

6

A

3

7

2

8

1

9

0

10

5

4

6

B

3

7

2

8

1

9

0

10

Architects and Engineers Specifications - NC-SEQ.

The module shall plug into Crest Audio CKS or CKV Power Processing amplifiers in the
Input Processing bay. The module shall be NexSys-compatible. The module shall include a
fully programmable four band parametric stereo equalizer with center frequency, bandwidth
and boost/cut parameters. The module shall be controlled/programmed either by NexSys via
an NC-NXS module (if fitted), a hand-held N-Coder or N-Coder/PC software.

All programmed settings shall be stored in non-volatile EEPROM memory. A barrier strip
input connector shall feed two electronically balanced inputs. Two removable-knob gain
pots shall be provided that control the level of each amplifier channel independent of pro­gramming. Post-EQ loop-thru outputs shall be available on barrier strip connectors. An
internal input sensitivity/voltage gain jumper shall be provided with selections of 0dBu, X20
and X40. The module shall be designated the Crest Audio model NC-SEQ.

NC-SEQ Input Processing Module

Stereo Parametric EQ

BLOCK DIAGRAM

A

IN

+

-
G

B

IN

+

-
G

Daisy
Chain

A
Out

A
Out

LO EQ LO MID EQ HI MID EQ HI EQ

B/C F BW

LO EQ LO MID EQ HI MID EQ HI EQ

B/C F BW

B/C F BW

B/C F BW

N-Coder

Data
Port

B/C F BW

B/C F BW

SPECIFICATIONS

Input impedance: 50kΩ
Dynamic Range: 107dB typ.

Vosc
Input for LM

Gain

CH A

Atten

B/C F BW

Gain

Atten

B/C F BW

I/F
ckt

ID
ckt

Power
Amp

CH B
Power
Amp

NexSys
Module Bus

CONTROL OPTIONS

The following NC-SEQ parameters can be con­trolled by the hand-held N-Coder, N-Coder/PC soft­ware, or via NexSys software.

Common mode rejection: 90dB typ.
Frequency response: 20Hz-20kHz, ± .75dB
Programmable gain range: 0 to -83dB
Voltage gain/input sensitivity: X20 (26 dB),

X40 (32 dB),

or constant sens. for full output at 0dBu (.775V) in

Connectors: Balanced inputs,

unbalanced HP /LPdaisy-chain outputs,

on barrier strip connectors

with 0.325" (8.3mm) screw center

and 0.270" (6.9mm) lug space,

RJ-14 (‘RJ-11 6-pin’) N-Coder data port

Controls: 2 gain attenuators (w/removable knobs)

Crest Audio reserves the right to make improvements in manufacturing or design which may affect specification. Crest Audio specification literature is available in electronic form to qualified users.

v. 2.1 4/7/97

Contact Crest Audio Inc. for more information. NexSys is a registered trademark of Crest Audio Inc. ©1996 Crest Audio Inc.

*A3300031*

N-Coder:

Channel A& B attenuation, phase reverse;
boost/cut, frequency and bandwith control (four­band parametric EQ).

N-Coder/PC software:

Channel A& B attenuation, phase reverse, muting;
boost/cut, frequency and bandwith control (four­band parametric EQ).

NexSys computer control:

Channel A& B attenuation, phase reverse, solo,
muting, input and output VU metering; boost/cut,
frequency and bandwith control (four-band para­metric EQ).

Crest Audio Inc.

100 Eisenhower Dr., Paramus NJ 07652 USA

TEL: [phone] FAX: [phone]

http://www.crestaudio.com

Printed in USA