Crest audio NC-SAC DATASHEET
d
-
Power
Processing
POWER/OUTPUT MODULE
Modules
FOR CKS, CKV & CKX SERIES
POWER PROCESSING AMPLIFIERS
NC-SAC Sequential Turn-On/Off, NexSys power supply, AC Voltage & Current Monitor
Product Information
The NC-SAC Module fits in the Power/Output bay located on the rear
panel of Crest Audio CKS, CKV & CKX Series Power Processing
amplifiers. It provides for NexSys®initiation or hard closure activation
of Sequential Turn-On/Off (STO) and includes NexSys AC Voltage and
Current monitoring circuitry. The NC-SAC turn-on and turn-off delay
times are user programmable via NexSys software.
Features
• NexSys compatible • Includes NexSys monitoring of AC voltage and current
• Amplifier output terminals on barrier strip connectors • Signal chassis ground lift jumper
• 5mm 6-pin Phoenix connector for sequential turn-on/off (STO) connection
• Sequential turn-on/off initiated by hard closure (standard) or NexSys
• With NexSys-initiated STO, user-programmable turn-on and turn-off delay times
NC-SAC connections
Since the NC-SAC is self-powered prior to the AC mains closure and is
optically isolated from other amplifiers in the turn-on chain, loss of AC
power to any amplifier in the chain will not affect any others during
sequential turn-on. A three-position front panel power switch is fitted to
all CKS, CKV & CKX amplifiers. This must be in the “Remote” position for the NC-SAC to initiate an STO sequence.
Sequential T urn-On/Off
connection to other
amplifiers
Off
Com
On
Sequential
Turn-On
In
On
On
Com
Off
On
Com
Off
Out
Off
Com
Model
NC-SAC
LISTED 8B42
COMMERCIAL
POWER
AMPLIFIER
120V~60 Hz 15A
USA-specification amplifier shown
Architects and Engineers Specifications - NC-SAC.
The module shall plug into Crest Audio CKS or CKV Power Processing amplifiers in the
Power/Output bay. The module shall provide NexSys-initiated and hard closure initiated
sequential turn-on/off capability for the host CKS and/or CKV amplifier and a sequential
turn-on output to the next amplifier in the chain. Disconnection of AC power to any number
of amplifiers in the chain shall not affect the turn-on sequence capability of all other amplifiers in the chain. The module shall contain the power supplies required for powering an
NC-NXS module.
-
+
+
-
-
CLASS 2
WIRING MAY
BE USED
Output
–
A
+
+
B
–
Signal
Ground
Lift
Jumper
Designed & manufactured in the USA by:
Model
Output Power
Name
@70.7V
Network
50W
100W
200W
400W
800W
1200W
+–
.
CKV 100
CKV 200
CKV 400
CKV 800
CKV 1600
CKV 2400
+–
Crest Audio Inc.
100 Eisenhower Dr.
Paramus, New Jersey 07652 USA
Model
Output Power
Name
CKS 100
CKS 200
CKS 400
CKS 800
CKS 800-2
CKS 1200-2
CKS 1600-2
Data
1
2
3
4
5
6
Address
7
8
Hi
@8Ω/Ch.
50W
100W
200W
400W
400W
600W
800W
F
E
D
C
B
A
9
F
1
E
2
D
3
C
4
B
5
A
6
9
7
8
Lo
NexSys Bus
The module shall include the hardware required for NexSys AC voltage and current monitoring. A 5mm 6-pin Phoenix connector shall be provided to transmit the turn-on initiation
voltage signal. A closure across two of the Phoenix connector terminals shall initiate the
turn-on/turn-off sequence. The module shall provide outputs for both amplifier channels on
barrier strip connectors and a signal ground lift jumper. The module shall be designated the
Crest Audio model NC-SAC.
Mo
NC
BLOCK DIAGRAM
NC-SAC Power/Output Module
Sequential Turn-On/Off, NexSys power supply, AC Voltage & Current Monitor
MAINS
ON
COM
OFF
ON
COM
OFF
Opto
OUT
SEQUENTIAL
TURN-ON
IN
I/D
ckt
TO AMPLIFIER
POWER SUPPLY
V line
AC Detect
I line
NexSys
On/Off
NexSys
Digital Supply
NexSys
Module Bus
SPECIFICATIONS
Pass-thru sequence time: 200ms
Connectors: 5mm 6-pin Phoenix connector (STO),
Amplifier output barrier strip*
with 0.44" (11mm) center
and 0.32" (8mm) lug space
Controls: Signal chassis ground lift jumper
*See CKS / CKV power amplifier operator’s manual for power output specifications.
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.
*A3300029*
CONTROL OPTIONS
The following NC-SAC parameters can be
controlled/monitored via hard closure or
NexSys software.
Hard closure:
Sequential Turn On/Off activation
NexSys computer control:
Sequential Turn On/Off initiation & delay
times, monitoring of AC mains voltage, current and wattage.
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
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