Peavey CKX Series, CKV Series, CKS Series owner manual Input Bay, Input Module Jumpers

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 (2.5mm2) & 24 AWG (0.25mm2), and spade lugs (Panduit Part No. PNF 18-6LF-C or equivalent) are recom- mended.

Input Module Connections and Controls Diagram.
SEE INSTRUCTION MANUAL
				Level	4	5	6
				A	3		7
					2		8
					1		9
					0		10
				Level	4	5	6
	Input A		Input B	B	3		7
+	–	+	–		2		8
					1		9
					0		10
				Model
				CC-IPB
Input Barrier Strip				Input Level
				Attenuators

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 Balanced /Unbalanced Connections Diagram.
SEE INSTRUCTION MANUAL
				Level	4	5	6
				A	3		7
					2		8
					1		9
					0		10
				Level	4	5	6
	Input A		Input B	B	3		7
+	–	+	–		2		8
					1
							9
					0		10
				Model
				CC-IPB

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.

Gain Select Jumpers Diagram.
			Channel A Jumper
			Channel B Jumper
			NexSys Indicator Jumper (NC-IPN Only)
		+26dB
	0dBu	+26dB	0dBu	+26dB
+26dB			+32dB
	+32dB	0dBu			+32dB
				0dBu
0dBu
		+32dB
+32dB				+32dB
.775V / 0 dBu (For Full Power)		X20 (+26 dB)		X40 (+32dB) Standard Factory Setting

N-Coder/NexSys Setup Jumpers Diagram.

CODE		CODE
		N-
N-		-NXS
	-NXS
		NC
NC
	N-Coder Setup	NexSys Setup
Input Module Jumpers Location Diagram - CC-IPB.
W1	A	CRESTAUDIO	26C2197-02
W2	+26dB 0dBuIN +32dB B
Input Gain/Sensitivity Jumpers

Input Module Jumpers Location Diagram - NC-IPN shown.

+ –	+ –
Balanced	Unbalanced
Input	Input

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

CREST AUDIO 2 6 C 2 7 9 7 - 0 2

W2 W1 W3

Input Gain/Sensitivity Jumpers

+26dB 0dBu Sen +32dB

N-CODE

NC-NXS

W4 W5

Nexsys / N-Coder Jumpers

Page 6 Crest Audio CK Power Processing Amplifiers