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Kenwood 4042A - KGC Equalizer / Crossover User Manual

Kenwood 4042A - KGC Equalizer / Crossover
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KGC-4042A
2001-8 PRINTED IN JAPAN
B51-7838-00 (4) 3395
GRAPHIC EQUALIZER
SERVICE MANUAL
C
Knob (FAD)
(K29-5541-08)
Trim plate
(A21-0474-03)
Screw set
(N99-1543-08)
Bracket
(J21-3693-04)
Power connection cord
(E30-3654-08)
RCA pin cord (IN)
(E30-3646-08)
RCA pin cord (OUT, F)
(E30-3647-08)
RCA pin cord (OUT, R)
(E30-3648-08)
RCA pin cord (OUT, SUB)
(E30-3649-08)
Metallic cabinet
(A01-2568-08)
RCA pin cap
(F29-0049-05)
Knob (SUB)
(K24-0710-08)
Knob (EQ)
(K24-0700-08)
Panel ass’y
(A64-0071-08)
REVISED
S/No. 10700001~
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Kenwood 4042A - KGC Equalizer / Crossover Specifications

General IconGeneral
TypeEqualizer / Crossover
BrandKenwood
Model4042A - KGC
CategoryRecording Equipment
Channels2
EqualizationYes
Equalization Range±12dB
Subwoofer OutputYes
Signal to Noise Ratio95dB
Power Requirement12V DC

Summary

KGC-4042A Graphic Equalizer Overview

Front Panel Controls and Indicators

Identifies and describes the function of front panel knobs and displays.

External Connections and Accessories

Details the included cables and connection ports for the unit.

System Block Diagram

Signal Path and Functional Blocks

Illustrates the overall signal flow through EQ, filters, amplifiers, and output stages.

Power Supply and Control Circuitry

Shows the power supply section and control logic for the equalizer.

Printed Circuit Board Layouts

Main PCB Component Side View

Layout showing component placement on the main circuit board.

Main PCB Foil Side View

Layout showing copper traces on the main circuit board.

EQ ON/OFF PCB Component Side View

Layout showing component placement on the EQ ON/OFF circuit board.

EQ ON/OFF PCB Foil Side View

Layout showing copper traces on the EQ ON/OFF circuit board.

Circuit Schematic Diagram

Input and Equalization Circuitry

Details the input signal processing and equalizer stages, including ICs and filters.

Amplifier, Filter, and Output Stages

Covers audio amplification, low/high pass filters, and output signal routing.

Power Supply and Control Logic

Illustrates the power supply section, switching transistors, and control functions.

Exploded View and Part Identification

Overall Unit Assembly Breakdown

Visual representation of how the unit's components are assembled.

Key Component Locations

Highlights the placement of major internal parts like PCBs and switches.

External Connections and Fasteners

Details external cables, connectors, and mounting hardware shown in the exploded view.

Parts List: Electric Unit Components

Capacitors and Connectors

Lists electric unit capacitors (C series) and connectors (CN series).

Transistors, ICs, and Lamps

Details transistors (Q series), integrated circuits (IC series), and lamps/LEDs.

Parts List: Resistors and Controls

Resistor Components (R Series)

Catalog of resistors, including chip resistors and leaded types, with their values.

Variable Resistors and Switches

Lists variable resistors (VR) and switches (SW) used in the unit.

Connectors and Sockets

Details specific connectors and sockets for unit assembly.

Component Identification and Specifications

Diodes, Transistors, and ICs

Lists diodes (D series) and transistors (Q series) with their part numbers and types.

Audio and Equalizer Specifications

Specifies audio parameters like input impedance, S/N ratio, and equalizer frequency response.

General Operating Parameters

Outlines operating voltage, current consumption, dimensions, and weight.

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