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McIntosh MA6400 User Manual

McIntosh MA6400
30 pages
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MA6400
INTEGRATED
AMPLIFIER
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McIntosh MA6400 Specifications

General IconGeneral
Power Output100 watts per channel
Frequency Response20 Hz to 20 kHz
Total Harmonic Distortion (THD)0.005%
Input Sensitivity (Phono)2.5mV
Signal to Noise Ratio (Phono)80 dB
Signal to Noise Ratio (High Level)100 dB
Damping Factor100
Input Impedance (line)20k Ohms
Input Impedance (MM)47k Ohms
Output Impedance4 Ohms

Summary

McIntosh MA6400 Integrated Amplifier Owner's Manual

Important Safety Instructions

McIntosh Three Year Service Contract

Introduction

Installation Guidelines

Front Panel Controls, Switches, and Pushbuttons

Bass and Treble Controls

Adjusts bass and treble frequencies for audio output.

Watts Power Output Meters

Displays peak power output in watts and decibels.

Power Guard Indicators

Indicates activation of the Power Guard circuit for clipping prevention.

Volume and Mute Functions

Controls listening volume and mutes audio output.

Loudness and Balance Controls

Adjusts channel balance and provides loudness compensation.

IR Sensor Window

Receives infrared signals from the remote controller.

Tape Monitor and Copy Functions

Controls tape playback monitoring and copying between recorders.

Headphone Jack and Input Selector

Connects headphones and selects audio input sources.

Mono Operation

Combines left and right channels for mono playback.

Speaker Output Selection

Selects which speaker pairs are active.

System Power Control

Turns the MA6400 system on and off.

MA6400 Hand Held Remote Controller

Remote Operation Functions

Describes functions for input selection, CD control, and tuner operations.

Installing Remote Controller Batteries

Instructions for inserting and replacing batteries in the remote.

The Rear Panel and How to Make Connections

Control and Data Port Connections

Connects CD players, accessories, and control translators.

Power Amplifier Inputs and Main Outputs

Links to external power amps and provides main outputs.

Tape Recorder and Processor Connections

Connects tape decks and external signal processors.

Audio and Video Input Jacks

Accepts signals from video, tuner, CD, and auxiliary sources.

Phono Input and Ground Terminal

Connects turntables and provides ground connection.

Power Cord and AC Power Outlets

Connects to power; provides switched/unswitched outlets.

Speaker Output Terminals

Connects loudspeakers to the amplifier.

External Sensor and Power Control

Connects remote sensors and accessory power control devices.

Hookup Diagram

Technical Description

Design Philosophy and Protection Systems

Details design principles, protection, and thermal control.

Power Guard and Control Logic

Explains clipping prevention, logic control, and switching.

Preamplifier and Amplifier Circuits

Describes phono, loudness, and tone control amplifier designs.

Specifications

Power Output and Frequency Response

Details stereo power output, rated band, and frequency response.

Distortion, Noise, and Headroom

Covers THD, IMD, headroom, and signal-to-noise ratio.

Input Sensitivity, Impedance, and Tone Controls

Specifies input requirements, impedance, and tone control range.

Dimensions, Finish, and Weight

Lists unit dimensions, finish, and weight.

Custom Installation Diagrams

Ventilation Cutout in Mounting Shelf

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