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Shure Vocal Master VA302 SERIES User Manual

Shure Vocal Master VA302 SERIES
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VA302 SERIES
@hfd(>M&fih
OPERATING AND SERVICE MANUAL
Manufactured by
SHURE BROTHERS
INC.
222 Hartrey Avenue
Evanston, Illinois 60204 U.S.A.
Copyright 1978, Shure Brothers Inc.
AL406
(RE)
27A818
Printed in
U.S.A.
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Shure Vocal Master VA302 SERIES Specifications

General IconGeneral
BrandShure
ModelVocal Master VA302 SERIES
CategoryStereo System
LanguageEnglish

Summary

OPERATING INSTRUCTIONS

Power Requirements

Specifies voltage, frequency, and power needs for different console models.

Anti-Feedback Switches

Explains how anti-feedback filters work to minimize acoustic squeal.

SPECIAL OPERATING INSTRUCTIONS

SERVICE INSTRUCTIONS

Amplifier Removal

Step-by-step guide for removing the amplifier chassis from its case.

Driver Transistors

Details on identifying, replacing, and modifying driver transistors.

Output Transistors

Procedures for replacing output transistors, including matching.

Check Transistors and Diodes

Methods for testing transistors and diodes using an ohmmeter.

Notes to Circuit Diagram

D.C. Voltage Measurements

Guidance on measuring DC voltages and expected values.

A.C. Voltage Measurements

Guidance on measuring AC voltages under specific test conditions.

Ohmmeter Measurements

Procedures for ohmmeter checks of various circuit components.

Circuit Diagrams

VA302-C CIRCUIT DIAGRAM

The main circuit diagram for the VA302-C console.

VA302E-C POWER SUPPLY CIRCUIT DIAGRAM

Circuit diagram detailing the power supply for the VA302E-C model.

VA302E6-C POWER SUPPLY CIRCUIT DIAGRAM

Circuit diagram detailing the power supply for the VA302E6-C model.