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McIntosh MAC 4300V User Manual

McIntosh MAC 4300V
31 pages
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McIntosh MAC 4300V Specifications

General IconGeneral
Input Sensitivity2.5mV (MM), 250mV (line)
Tuning rangeFM: 87.5-108 MHz, AM: 530-1710 kHz
Frequency Response20Hz to 20kHz
Signal to Noise Ratio90dB (line)
Speaker Load Impedance4 ohms

Summary

Important Safety Instructions

Outdoor Antenna Grounding Safety

Guidelines for proper grounding of outdoor antenna systems against voltage surges and static.

Damage Requiring Service Precautions

Details conditions requiring qualified service personnel for instrument repair.

Introduction to the MAC4300V Receiver

McIntosh Reputation and Receiver Features

Highlights McIntosh's quality reputation and the MAC4300V's advanced features and user-oriented design.

Remote Control System Overview

Explains the infrared remote control system for operating various receiver functions and expanding control to additional areas.

Advanced FM/AM Tuner Design

Details the tuner's digital display, tuning modes, Signal Locked Loop, and Automatic Frequency Lock for precise station tuning.

Audio Source Selection and Input Options

Covers electronic input switching for various sources like CD, TV/AU, LASER, PHONO, and tape recorders.

Speaker Outputs and Loudness Control

Explains connecting three speaker pairs and the active circuit loudness control for tailored audio response.

Amplifier Protection Systems

Describes the patented McIntosh Sentry Monitor and Power Guard circuits that protect the amplifier and speakers.

Installation Guide

Custom Cabinet Mounting Guidelines

Provides dimensions and steps for mounting the MAC4300V in a custom cabinet, including ventilation and securing the unit.

How to Connect Components

Connecting Loudspeakers and Turntable

Guides on connecting loudspeakers and turntables, including grounding and cable gauge recommendations.

Connecting Audio Sources

Details connecting CD players, laser disc players, and TV audio to the receiver's various input jacks.

Connecting Tape Recorders and Accessories

Covers connecting tape recorders, optional video selectors, and signal processors to the system.

Antenna Connections for FM and AM

Discusses connecting FM and AM antennas, including types, impedance, and matching transformers.

Remote Area Sensors and AC Power Connection

Details connecting optional remote area sensors and the receiver's AC power connection.

Switched/Unswitched Outlets and Amplifier Outputs

Explains AC outlet functions and methods for connecting external power amplifiers.

Front Panel Controls

Message Center and Power Indicators

Details message center displays, power output LEDs, and the Power Guard circuit's role in preventing clipping.

Input Selection and Tuning Controls

Covers selecting program inputs (CD, FM, AM, etc.) and manual, scan, and preset tuning operations.

Equalizer and Speaker Selection

Explains adjusting the five-band equalizer and selecting speaker outputs for three listening areas.

Headphones, Manual, and SCAN Tuning

Describes headphone jack usage and the operation of manual and SCAN tuning modes for station selection.

Preset Station Memory and Stereo Balancing

Explains storing and recalling preset stations, and adjusting speaker phase and loudness for optimal stereo performance.

Volume, Loudness, and Balance Controls

Covers volume adjustment, loudness and balance controls for fine-tuning audio output.

Monitor, Tape Copy, and System Modes

Explains monitor functions, tape copying, lockout mode, and mono audio selection for FM reception.

Remote Control Operation

Using the HR4300 Remote Unit

Explains the duplication of front panel controls on the HR4300 remote, its battery operation, and IR signal transmission.

Remote Control Functions and Operation

Details how to use buttons like PLAY, NEXT, BACK, STOP, SPKR, and SCAN for receiver and CD player operation.

Performance Limits

Amplifier Section Specifications

Details power output, bandwidth, harmonic and intermodulation distortion, input sensitivity, and signal-to-noise ratios.

FM Section Performance Specifications

Lists usable sensitivity, quieting sensitivity, signal-to-noise ratio, frequency response, and distortion for FM reception.

AM Section Performance Specifications

Details sensitivity, signal-to-noise ratio, harmonic distortion, frequency response, and selectivity for AM reception.

General Information and Mechanical Specifications

Lists semiconductor complement, AC power outlets, power requirements, and physical dimensions and weight of the unit.

Block Diagrams

FM/AM Receiver Signal Flow Diagram

Illustrates the signal path from antenna input through tuning, detection, and audio output stages for FM and AM.

Audio Input and Control Signal Paths Diagram

Shows the block diagram for audio inputs, preamp/power amp sections, remote control interface, and power supply.

Performance Charts

Amplifier and FM Performance Graphs

Presents charts for harmonic distortion, power bandwidth, loudness response, and FM performance including noise levels.

Tuner Selectivity and Response Graphs

Shows AM and FM selectivity curves, equalizer response, and output signal waveform illustrating Power Guard action.

FM and Distortion Response Graphs

Details FM frequency response, stereo separation, intermodulation distortion, and frequency response at 1 watt output.

Technical Description

Tuning System and FM Tuner Design

Explains the tuning system, including PLL and SLL, and details the FM tuner's circuitry.

AM Tuner, Antenna Inputs, and Audio Switching

Describes AM tuner design, antenna inputs, and the electronic audio input switching system.

Phono Amplifier and Volume Controls

Details the phono amplifier's high-technology design and the electronically switched volume control.

Loudness Compensation and Equalizer

Explains the loudness compensation circuit and the operational amplifier-based equalizer amplifier.

Power Amplifier Section Operation

Details the power amplifier's input/output stages, driver transistors, and push/pull configuration.

Amplifier Protection and Power Guard

Describes protection circuits like SENTRY MONITOR, DC detection, and the POWER GUARD feature.

Turn On Delay and Power Supply

Explains the turn-on/off delay circuit and the power supply design with voltage regulation.

Location of Controls and Pushbuttons

Front Panel Control Identification

Diagram identifying front panel controls and pushbuttons with corresponding numbers and letters.

Rear Panel Connection Identification

Diagram identifying rear panel connectors and inputs with corresponding numbers.

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