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Crown 1200 User Manual

Crown 1200
43 pages
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Micro-Tech 1200 Amplifier Service Manual
1
MICRO-TECH
®
-1200
POWER AMPLIFIER
SERVICE MANUAL
K-SVCMT12
8-95
Micro-Tech
®
, ODEP
®
and Crown
®
are registered trademarks of Crown International, Inc.
Mailing Address:
P.O. Box 1000
Elkhart, IN U.S.A. 46515-1000
Shipping Address:
57620 C.R. 105
Elkhart, IN U.S.A. 46517
©1995 by CROWN INTERNATIONAL, INC.
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Crown 1200 Specifications

General IconGeneral
Total Harmonic Distortion<0.05%
Channels2
Dimensions19" x 3.5"
Input Impedance20 kOhms balanced, 10 kOhms unbalanced
Damping Factor>500
CoolingForced air, front-to-back

Summary

Introduction to Crown Micro-Tech Amplifiers

Scope of Service Manual

Describes the manual's applicability to MT-1200/1201 amplifier models.

Warranty Service Procedures

Outlines procedures for warranty claims, factory service, and authorized centers.

Crown Amplifier Parts Information

Part Numbering and Ordering Guide

Explains Crown's part numbering systems and how to order replacement parts.

Shipment and Payment Terms

Details shipping procedures, payment terms, and return policies.

Micro-Tech 1200 Amplifier Specifications

Power and Performance Specifications

Details output power ratings, frequency response, distortion, and noise specs.

Electrical, Mechanical, and Protection Features

Covers impedance, protection systems, connectors, construction, and dimensions.

Voltage Conversion Procedures

Voltage Selection Board Settings

Details jumper settings and fuse changes for different voltage configurations.

Amplifier Theory of Operation

Overview, Features, and Front End Stages

Introduces amplifier theory, highlights features, and explains initial signal processing.

Voltage Amplification and Output Stage Design

Describes signal amplification, translation, and the grounded bridge topology.

High Side, Low Side, and ODEP Protection

Details output stage operation and the ODEP protection system.

Electrical Checkout Procedures

Initial Setup and Basic Tests

Covers initial conditions, DC offset, bias, ODEP, AC power, and CMR tests.

Performance Verification and Protection Tests

Covers gain, phase, slew rate, crosstalk, output power, and protection tests.

Distortion, Transient, and Clipping Tests

Covers IMD, turn-on/off transients, reactive loads, and clipping tests.

Post-Testing Procedures

Details returning controls to factory settings after testing.

Non-Module Parts List

Supplemental and Power Supply Components

Lists general hardware, chassis parts, and power supply components.

Output Assembly Components

Lists components specific to the output stage assembly.

Chassis and Panel Components

Lists parts for the front panel, back panel, and main chassis assemblies.

Module and Schematic Information

Module History and Types Overview

Provides an overview of module revisions, output, main, fuse, and display modules.

Schematic Information and Usage

Explains the representative nature and usage of provided amplifier schematics.

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