Peavey CKS Series, CKV Series Signal Ground Lift Jumper, Replacing or Installing a Network Module

Input Module Replacement Diagram - NC-IPN.

Designed & manufactured in the USA by:
			Crest Audio Inc.
WIRING			100 Eisenhower Dr.
USED			Paramus, New Jersey 07652 USA
t	Model	Output Power	Model	Output Power
	Name	@70.7V	Name	@8Ω/Ch.
	CKV 100	50W	CKS 100		50W
	CKV 200	100W	CKS 200		100W
	CKV 400	200W	CKS 400		200W
	CKV 800	400W	CKS 800		400W
			CKS 800-2		400W
CKV 1600		800W	CKS 1200-2		600W
CKV 2400		1200W	CKS 1600-2		800W
	Network			Address		Model
			Data	F	F	NC-NXS
					ED	ED
			5		5
			67		67
+	–	+ –		Hi	Lo

Ribbon Cable from

Network Module, if fitted

SEE INSTRUCTION MANUAL

			Level	4	5	6
N-Coder			A	3		7
Data			2			8
Port			1			9
				0		10
			Level	4	5	6
Input A		Input B	B	3		7
+ –	+	–	2			8
			1			9
				0		10
			Model
			NC-IPN

Replacing or Installing a Network Module.

The amplifier must be switched off and unplugged from the AC mains supply before this operation is undertaken. Four Phillips head screws secure the module to the chassis. The module is connected electrically to the amplifier via multi-pin ribbon cables. Unplugging the module from the ribbon cable connectors frees the module for removal. To insert the same or another module, simply reverse this procedure. Note: Standard CK Power Processing amplifiers come with a blank panel installed in the Network bay. The amplifier must not be operated without a Network module or blank panel in place.

IMPORTANT:

THE POWER/OUTPUT

MODULE IS NOT REMOVABLE. DO NOT ATTEMPT TO REPLACE OR REMOVE A POWER/OUTPUT MODULE !

This module can only be serviced by a Crest Audio-certified service technician. Please consult your dealer or Crest Audio representative for assistance. User-inflicted damage to this module will invalidate your warranty.

Signal Ground Lift Jumper.

Whenever possible, the signal source equipment should share the same AC ground as the amplifier(s). In some cases, however, partic- ularly if an amplifier is being installed in an existing system, this may result in a ground loop. If this happens, remove the factory- installed ground lift jumper from the output barrier strip (located on the Power/Output module), which electrically connects the signal ground to the chassis/AC ground. If the jumper is removed, the sig- nal ground is lifted and is clamped to ± 0.6V. Don’t remove the jumper if the amplifier and the signal source equipment are not on the same AC ground!

In a properly designed system (for safety and to minimize noise), the amplifier should receive its ground from the AC line cord. The shield

Network Module Installation Diagram.

CLASS 2 WIRING

MAY BE USED

Output

+8 to 18VDC	–
20 mA

A

+

+

B

NEC	–
LASS 2 ONLY

Signal

Ground

Lift

Jumper

Model

CC-STL

Designed & manufactured in the USA by:
			Crest Audio Inc.
			100 Eisenhower Dr.
			Paramus, New Jersey 07652 USA
Model	Output Power		Model	Output Power
Name	@70.7V		Name		@8Ω/Ch.
CKV 100	50W		CKS 100				50W
CKV 200	100W		CKS 200			100W
CKV 400	200W		CKS 400			200W
CKV 800	400W		CKS 800			400W
			CKS 800-2			400W
CKV 1600	800W		CKS 1200-2			600W
CKV 2400	1200W		CKS 1600-2			800W
Network					Address				Model
		Data		0	F E		1 0		NC-NXS
			1					F E
			3			D	3		D
			45			C	45		C
			6			B	6		B
			7	8	9		78	9
+ –	+ –			Hi				Lo

PUSH

SEE INSTRUCTION M

N-Coder
Data
Port
Error
AES/EBU	Inp
In

+

on a balanced input line should be grounded at one end only (usually the sending end), and it must never be relied on to supply AC ground to the amplifier.

+8 to 18VDC
240 mA		A
	+	Signal Ground
In		Lift Jumper
Out	+
Com
NEC		B
CLASS 2 ONLY
		Signal
		Ground
		Lift
		Jumper
Model
CC-STL

Page 8 Crest Audio CK Power Processing Amplifiers