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Mackie FR Series M.1400 User Manual

Mackie FR Series M.1400
38 pages
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M•1400 / M•1400i / M•1200
SERVICE MANUAL
1998 MACKIE DESIGNS, INC.
820-179-00
Version 1.2

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Mackie FR Series M.1400 Specifications

General IconGeneral
BrandMackie
ModelFR Series M.1400
CategoryAmplifier
LanguageEnglish

Summary

Safety Precautions

Electrical Shock Warnings

Warnings regarding the risk of electric shock and user access to internal parts.

Fire and Moisture Warnings

Advisories against exposing the product to rain or moisture to prevent fire or shock.

Symbol Explanations

Explanation of safety symbols used in the manual and on the equipment.

Introduction

Service Personnel Qualification

Highlights the need for experienced technicians and familiarity with amplifier circuits.

System Overview

Specifications

Output Power and Bandwidth

Details continuous and peak output power ratings and power bandwidth.

Frequency, Distortion, and Noise

Covers frequency response, distortion levels (THD, IMD, TIM), and signal-to-noise ratio.

Circuit Theory

Input Circuitry Explained

Explains the signal path and components of the input stage.

Power Amplifier Design

Details the class AB output stage, triple darlington, and unique front-end architecture.

Protection Circuits

Describes the SOA protection and DC crowbar circuits for speaker and component safety.

Thermal Management

Explains the heatsink/fan cooling system and thermal shutdown mechanisms.

Service Procedures

Troubleshooting Output Failures

Provides guidance for diagnosing and resolving common output stage problems.

Bias and Test Procedure

Outlines the steps for setting bias, testing performance, and verifying functionality.

Service Bulletin: Fuse Upgrade

Service Bulletin: Ribbon Replacement

Schematics and Layouts

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