Peavey CKS Series User Manual Page 8
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Page 6 Crest Audio CK Power Processing Amplifiers
Input Bay.
Input Module Connections and Controls.
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 (2.5mm
2
) & 24 AWG (0.25mm
2
), and spade
lugs (Panduit Part No. PNF 18-6LF-C or equivalent) are recom-
mended.
Removable Attenuator Knobs.
The attenuator knobs can be removed and replaced with blanking
plugs. These plugs are shipped with the amplifier. The procedure for
attenuator knob removal is as follows:
1. With an X-Acto or similar knife, pop off the grey key cap of
the attenuator knob. This will reveal the inside nut.
2. Using a needle nose pliers or appropriate size nut driver,
loosen the inside nut.
3. Slide the attenuator knob off the shaft.
4. Insert a regular screwdriver in the slotted end of the shaft, and
adjust attenuation to desired level.
5. Blanking plugs may now be inserted in the attenuator holes.
Unbalanced Sources.
For use with an unbalanced source, tie the inverting (minus) input to
ground by installing a jumper across the appropriate barrier strip ter-
minals. If the inverting input is left floating, a 6 dB loss in gain will
result. See the diagram below.
Input Module Jumpers.
Gain Select Jumpers.
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 allow the amplifier to
be set for constant gain of X20 (26 dB), X40 (32 dB), OR constant
sensitivity for full output (.775V) at 0 dBu input. The standard facto-
ry setting is for X40 (32dB). (Refer to the specifications for more
gain/sensitivity information). The diagram below shows the location
of these jumpers. All jumpers must be set to the same position as
indicated in the drawing below. To change jumper settings, the Input
module must first be removed from the amplifier chassis. This opera-
tion is covered in the section "Module Removal/Replacement".
N-Coder Setup Jumpers.
All NC Modules have internal jumpers used to set the module for
operation with NexSys or N-Coder. These jumpers are labeled “W4
W5” on the Input module circuit board. The “NC-NXS” jumper posi-
tion allows operation with NexSys, while the “NCODE” jumper
position permits the Input module to be programmed through N-
Coder or N-Coder/PC software when the amplifier is off . Note:
Factory setting is the 'NexSys' position. If NexSys, N-Coder, or N-
Coder/PC software is not being used, jumper position will have no
effect upon the operation of the amplifier.
Level
B
Level
A
Input A
Input B
+
+
–
–
7
8
9
5
2
0
1
3
4
6
10
7
8
9
5
2
0
1
3
4
6
10
Model
CC-IPB
+
+
–
–
Balanced
Input
Unbalanced
Input
SEE INSTRUCTION MANUAL
+26dB
0dBu
+32dB
+26dB
0dBu
+32dB
+26dB
0dBu
+32dB
+26dB
0dBu
+32dB
.775V / 0 dBu (For Full Power)
X20 (+26 dB)
Channel A Jumper
Channel B Jumper
NexSys Indicator Jumper (NC-IPN Only)
X40 (+32dB) Standard Factory Setting
+26dB
0dBu
+32dB
+26dB
0dBu
+32dB
N-Coder Setup
NexSys Setup
N-CODE
NC-NXS
N-CODE
NC-NXS
+26dB
0dBu Sen
+32dB
W2
W1
W3
W4
W5
N-CODE
NC-NXS
CREST AUDIO
2 6C2 7 9 7 - 0 2
Input Gain/Sensitivity Jumpers
Nexsys / N-Coder Jumpers
CREST AUDIO
2 6 C 2 1 9 7 - 0 2
Input Gain/Sensitivity Jumpers
W1
+26dB
W2
A
B
0dBu IN
+32dB
Input Barrier Strip
Level
B
Level
A
Input A
Input B
+
+
–
–
7
8
9
5
2
0
1
3
4
6
10
7
8
9
5
2
0
1
3
4
6
10
Model
CC-IPB
SEE INSTRUCTION MANUAL
Input Level
Attenuators
Input Module Connections and Controls Diagram.
Input Balanced /Unbalanced Connections Diagram.
Input Module Jumpers Location Diagram - NC-IPN shown.
Input Module Jumpers Location Diagram - CC-IPB.
Gain Select Jumpers Diagram.
N-Coder/NexSys Setup Jumpers Diagram.
- OWNER’S MANUAL 1
- Important Precautions 2
- 234 5 6 7 4
- Unpacking 5
- Amplifier Quick Set-Up 5
- Installation and Mounting 5
- Front Panel 5
- Side Panels 5
- 11 12 13109 6
- Parallel Mode Diagram 7
- Input Bay 8
- Input Module Jumpers 8
- Network Bay 9
- Power/Output Bay 9
- Module Removal 9
- SEE INSTRUCTION 10
- TourClass 11
- Protection Features 11
- Sequential Turn-On/Turn-Off 12
- Appendices 13
- ©1997 Crest Audio Inc 14
- Power is serious business 20
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