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Adcom GFA-5400 Service Manual

Adcom GFA-5400
8 pages
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SERVICE MANUAL
2 CHANNEL
POWER AMPLIFIER
GFA-5400
TABLE OF CONTENTS
Introduction................1
Version 1 vs. Version 2 . . . . . . . . 1
Test Procedures. . . . . . . . . . . . . 1
Parts List..................2
Specifications...............6
Chassis Layout . . . . . . . . . . . . . . . 7
Version 1 Schematic..........8
Version 2 Schematic..........9
10 Timber Lane
Marlboro, NJ 07746
USA
Tel: 732-683-2356
Fax: 732-683-9790
Web: http://www.adcom.com

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Adcom GFA-5400 Specifications

General IconGeneral
Impedance8 Ω
Audio output channels2.0 channels
Connectivity technologyWired
Power requirements115 V, 50-60 Hz
Power consumption (typical)960 W
Product colorBlack

Summary

Introduction to GFA-5400 Service

Version 1 vs. Version 2 Differences

Describes differences between GFA-5400 amplifier versions 1 and 2, focusing on protection circuits.

Service Test Procedures and Conditions

Lists general test conditions and requirements for amplifier service procedures, including voltage and load.

Bias Alignment and DC Offset Check

Outlines critical steps for bias alignment and DC offset check before adjustments for amplifier performance.

ADCOM GFA-5400 Service Parts List

Power Supply PCB Components

Lists components for the ADCOM GFA-5400 Power Supply PCB, including capacitors and resistors.

Amplifier PCB Components

Lists components for the ADCOM GFA-5400 Amplifier PCB, detailing capacitors, diodes, and transistors.

Other Hardware Components

Lists general hardware components for the ADCOM GFA-5400, such as chassis parts and connectors.

Protection Circuit Power Supply PCB Components

Lists components for the ADCOM GFA-5400 Protection Circuit Power Supply PCB.

ADCOM GFA-5400 Specifications

Power Rating and Distortion

Details power output ratings into 8 and 4 ohms and associated Total Harmonic Distortion (THD) limits.

Frequency Response and Bandwidth

Specifies frequency response at 1 Watt and power bandwidth for the GFA-5400 amplifier.

Signal to Noise Ratio and Gain

Provides specifications for signal-to-noise ratio and amplifier gain.

Input Sensitivity and Impedance

Details input sensitivity requirements and input impedance of the GFA-5400 amplifier.

Power Consumption and Dimensions

Lists power consumption figures and physical dimensions of the GFA-5400 amplifier.

GFA-5400 Version 1 Schematic Diagram

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