N-Co
Data
Port
LISTED 8B42
COMMERCIAL
POWER
AMPLIFIER
120V~60 Hz 15A
Model
NC-STI
Com
On
Off
Com
On
Off
In
Out
Sequential
Turn-On Output
A
B
+
+
–
–Signal
Ground
Lift
Jumper
CLASS 2
WIRING MAY
BE USED
8
1
9
2
A
3
B
4
C
5
D
6
E
7
F
8
1
9
2
A
3
B
4
C
5
D
6
E
7
F
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
400W
600W
800W
Model
NC-NXS
Hi
Data
Lo
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
+
--
+
--
Sequential Turn-On/Off
connection to other
amplifiers
On
Off
Com
On
Off
Com
NexSys Bus
POWER/OUTPUT MODULE
FOR CKS, CKV & CKX SERIES
POWER PROCESSING AMPLIFIERS
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
NC-STI Sequential Turn-On/Off and NexSys®power supply
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 program-
mable.
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.
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 ini-
tiated sequential turn-on/off capability for groups of CKS and/or CKV amplifiers. The mod-
ule shall provide turn-on to host CKS and/or CKV amplifiers and a sequential turn-on output
to other amplifiers in the chain.
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 barri-
er strip connectors and a signal ground lift jumper. The module shall be designated the Crest
Audio model NC-STI.
NC-STI connections
Power
Processing
Modules
USA-specification amplifier shown
