Crest audio NC-STI DATASHEET
d
Power
Processing
POWER/OUTPUT MODULE
Modules
FOR CKS, CKV & CKX SERIES
POWER PROCESSING AMPLIFIERS
NC-STI Sequential Turn-On/Off and NexSys
Product Information
The NC-STI Module fits in the Output/Power bay located on the rear
panel of Crest Audio CKS, CKV & CKX Series Power Processing
amplifiers. In addition to NexSys initiation or hard closure activation of
Sequential Turn-On/Off (STO), NC-STI includes the power supplies for
the NexSys NC-NXS Network Module. When initiating STO with
NexSys, the NC-STI turn-on and turn-off delay times are user programmable.
Features:
• NexSys compatible
• Sequential turn-on/off initiated by hard closure (standard) or NexSys
• With NexSys-initiated STO, user-programmable turn-on and turn-off delay times
• Amplifier output terminals on barrier strip with 0.44" (11mm) screw spacing and 0.32" (8mm) lug spacing
• 5mm 6-pin Phoenix connector for sequential turn-on/off connection
• Signal chassis ground lift jumper
®
power supply
Since the NC-STI is self-powered prior to the AC mains closure and is
optically isolated from other amplifiers in the Turn-On/Off chain, loss of
AC power to any amplifier in the chain will not affect any others during
STO. The front panel power activation switch must be in the “Remote”
position for the NC-STI to initiate or be part of a Turn-On/Off sequence.
NC-STI connections
Sequential Turn-On/Off
connection to other
+
-
-
amplifiers
Off
Com
On
CLASS 2
Sequential
Turn-On
In
On
On
Com
Off
On
Com
Off
Off
Com
Out
Model
NC-STI
LISTED 8B42
COMMERCIAL
POWER
AMPLIFIER
120V~60 Hz 15A
USA-specification amplifier shown
Architects and Engineers Specifications - NC-STI.
The module shall plug into a Crest Audio CKS or CKV Power Processing amplifier in the
Power/Output bay. The module shall contain the power supplies required for powering an
NC-NXS module (if fitted). The module will provide NexSys-initiated and hard closure initiated sequential turn-on/off capability for groups of CKS and/or CKV amplifiers. The module shall provide turn-on to host CKS and/or CKV amplifiers and a sequential turn-on output
to other amplifiers in the chain.
WIRING MAY
BE USED
Output
–
A
+
+
B
–
Signal
Ground
Lift
Jumper
-
-
+
Designed & manufactured in the USA by:
Output Power
Model
@70.7V
Name
CKV 100
CKV 200
CKV 400
CKV 800
CKV 1600
CKV 2400
+–
Network
50W
100W
200W
400W
800W
1200W
+–
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
7
Hi
Address
8
@8Ω/Ch.
50W
100W
200W
400W
400W
600W
800W
F
E
D
3
C
4
B
5
A
9
Model
NC-NXS
F
1
E
2
D
C
B
A
6
9
7
8
Lo
NexSys Bus
Disconnection of AC power to any number of amplifiers in the chain shall not affect the
turn-on/off sequence capability of all other amplifiers in the chain. A 5mm six pin Phoenix
connector shall be provided to receive and pass on the turn-on initiation signal. A closure
across two of the Phoenix connector terminals on the first amplifier in the chain shall initiate
the turn-on 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-STI.
N-Co
Data
Port
BLOCK DIAGRAM
NC-STI Power/Output Module
Sequential Turn-On/Off and NexSys power supply
MAINS
ON
COM
OFF
ON
COM
OFF
Opto
OUT
SEQUENTIAL
TURN-ON
IN
TO AMPLIFIER
POWER SUPPLY
NexSys CTL
NexSys
Digital Supply
SPECIFICATIONS
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.
*A3300033*
CONTROL OPTIONS
The following NC-STI parameters can be controlled
via hard closure or NexSys software.
Hard closure:
Sequential Turn On/Off activation
NexSys computer control:
Sequential Turn On/Off initiation & delay times
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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