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JBL 6230 User Manual

JBL 6230
31 pages
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BEFORE PROCEEDING
WITH
COMPLETE UNPACKING AND SETUP,
READ THE
SECTION
ON UNPACKING AND
INSPECTION
UBL
model 6230/6260
POWER
AMPLIFIER
JBL
Incorporated
8500 BALBOA BOULEVARD
P.O.
BOX 2200
NORTHRIDGE,
CA
91329,
U.S.A.
PHONE:
(818)
893-8411
TELEX: 4720424
SERVICE
ADDRESS:
8460 SAN FERNANDO ROAD
SUN
VALLEY, CA
91352,
U.S.A.
PHONE:
(818)
767-1000
Printed
In
U.S.A.
©
Copyright
1984,
JBL Inc

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JBL 6230 Specifications

General IconGeneral
BrandJBL
Model6230
CategoryAmplifier
LanguageEnglish

Summary

PREFACE

SECTION I INTRODUCTION

1.1 SPECIFICATIONS

Details technical specs: output power, impedance, frequency response, noise levels.

SECTION II INSPECTION AND INSTALLATION

2.1 UNPACKING AND INSPECTION

Instructions for safely unpacking and checking amplifier for transit damage.

2.2 ENVIRONMENTAL CONSIDERATIONS

Discusses optimal operating conditions and amplifier cooling requirements.

2.3 AC POWER

Details AC power requirements, voltage verification, and grounding safety.

2.4 AMPLIFIER MODE SWITCH

Explains rear panel switch for Stereo, Dual Mono, or Bridged Mono modes.

2.5 EXTERNAL CONNECTIONS

Covers input/output connectors: jacks, XLR, barrier strips, and binding posts.

2.6 INPUT IMPEDANCE AND TERMINATION

Explains input impedance characteristics and termination for signal integrity.

2.7 APPROPRIATELY RATED LOADS

Discusses user responsibility to avoid overpowering loudspeakers and select appropriate loads.

2.8 SPEAKER CABLES

Discusses speaker cable types, DC resistance, and durability.

2.9 GROUNDING

Details importance of proper grounding for safety, noise reduction, and shielding.

2.10 SECURITY COVERS

Describes installation and use of optional security covers for gain controls.

SECTION III OPERATING INSTRUCTIONS

3.1 GENERAL

Guidelines for amplifier installation and initial setup before powering on.

3.2 TURN ON AND SYSTEM CHECK

Procedure for powering on the amplifier and verifying system operation.

3.3 CLIP INDICATORS

Explains CLIP LED function and interpretation.

3.3.1 ABOUT SENSITIVITY RATINGS

Clarifies amplifier sensitivity ratings and relation to input signal levels.

SECTION IV THEORY OF OPERATION

4.1 INPUT DIFFERENTIAL AMPLIFIER

Details function and design of the input differential amplifier stage.

4.2 MODE SWITCH

Describes mode switch effects on signal routing for Stereo, Dual Mono, Bridged Mono.

4.3 POWER AMPLIFIER

Explains discrete transistor circuitry and symmetrical topology of the power amplifier stage.

4.4 RELAY DRIVER/OUTPUT DC DETECTOR

Details circuitry for output relay driver and DC output detection.

4.5 CLIP CIRCUIT

Explains clip detection circuit operation and associated LED.

4.6 POWER SUPPLY

Describes conventional power supply design and voltage regulation.

SECTION V MAINTENANCE

5.1 GENERAL

Notes on amplifier construction, reliability, and no required preventive maintenance.

5.2 REPAIRS AND WARRANTY

Details factory warranty, return procedures, and repair recommendations.

SECTION VI SCHEMATIC DIAGRAM

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