Kenwood KAC-629S User Manual

POWER AMPLIFIER
KAC-629S
SERVICE MANUAL
© 2000-11 PRINTED IN KOREA
B51-7710-00 (K) 3590
25
FUSE(25A)
POWER IN
BATT.
P.CON(REMOTE)
GND
LEFT
BRIDGED
RIGHT
SPEAKER OUTPUT
POWER AMPLIFIER
MONO(Lch)
STEREO
OPERATION
LPF
HPF
FILTER
L R
LINE IN
LEFT RIGHT
SPEAKER LEVEL INPUT
GND
INPUT
SENSITIVITY(V)
MAXMIN
0.30.5
1.0
OFF L
+
R
STEREO / BRIDGEABLE
AMPLIFIER
KAC - 629S
MAXIMUM POWER
SCREW SET
(N99-1587-05)
ACCESSORY
(TERMINAL COVER SET)
(W01-1516-05)
40%

Kenwood KAC-629S Specifications

Audio Section

max power output (4Ω) normal	120W x 2
max power output (4Ω) bridge	350W x 1
rated power output (4Ω) normal (20Hz-20KHz, 0.08% THD)	60W x 2
rated power output (4Ω) normal (DIN45324, +B=14.4V)	60W x 2
rated power output (4Ω) bridge (1KHz, 0.8% THD)	150W x 1
rated power output (2Ω) normal (1KHz, 0.8% THD)	75W x 2
frequency response (+0, -1dB)	10Hz - 45kHz
signal to noise ratio	100dB
sensitivity (MAX) (rated output)	0.2V
sensitivity (MIN) (rated output)	5.0V
input impedance	10kΩ
low pass filter (12dB/oct.)	80Hz
high pass filter (12dB/oct.)	150Hz

General

operating voltage	14.4V
current consumption (1KHz, 10% THD)	19A
dimensions (Width x Height x Depth)	221mm x 57mm x 228mm
weight	2.8kg

Summary

KAC-629S Service Manual Overview

Product Identification

Identifies the KAC-629S model power amplifier and manufacturer.

Included Accessories

Lists the screw set and terminal cover set provided with the amplifier.

Block Diagram

System Architecture

Visual representation of the amplifier's internal signal flow and major components.

Adjustment Procedures

Idle Current Adjustment

Details the procedure for setting the idle current using a DC voltmeter.

Parts Descriptions

Capacitor Identification

Explains the coding system for identifying capacitor values, tolerance, and temperature coefficients.

Resistor Identification

Details the coding system for identifying resistor values and ratings.

PC Board Layouts

Component Side View

Diagram showing the placement of components on the printed circuit board.

Foil Side View

Diagram illustrating the copper traces and connections on the underside of the PCB.

Schematic Diagram

Circuit Analysis

Detailed electrical schematic showing the amplifier's circuit design and component interconnections.

Exploded View and Parts Identification

Assembly Diagram

Illustrates the mechanical assembly of the amplifier with numbered parts.

Part Numbering System

Provides a reference for part numbers and their corresponding descriptions.

Parts List

Capacitors and Connectors

Lists capacitors (Cxx) and connectors (CNxx, Jx, TP1) with their part numbers and specifications.

Audio Unit Components

Details components like LED, choke coil, and transformer for the audio unit.

Parts List (Continued)

Resistors and Diodes

Lists resistors (Rxx) and diodes (Dxx) with their part numbers and specifications.

Transistors and ICs

Lists transistors (Qxx) and integrated circuits (ICx) with their part numbers and types.

Specifications

Audio Section Parameters

Details power output, frequency response, sensitivity, and filter characteristics.

General Operating Parameters

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