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Luxman M-900u User Manual

Luxman M-900u
20 pages
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Owner`s
Manual
LUXMAN CORPORATION, JAPAN
STEREO POWER AMPLIFIER
M-900u
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Luxman M-900u Specifications

General IconGeneral
TypePower Amplifier
Instantaneous Maximum Output Power (4Ω)600W + 600W
Total Harmonic Distortion0.03%
Frequency Response20Hz-20kHz
Frequency Response (Extended)5 Hz - 100 kHz
Dimensions440 mm

Summary

Precautions

Installation and Ventilation

Advice on unit placement for proper ventilation and heat dissipation.

Connection Safety

Guidelines for safe connection of components and speakers to prevent damage.

Operational Considerations

Explains sound muting and the unit's protection circuit functions.

Maintenance and Safety

Covers repair, cleaning, and general safety warnings regarding the unit's weight.

Features of This Unit

4 x 2 Output Structure

Describes the amplifier's circuit structure and rated output power.

ODNF Technology

Explains the ODNF feedback circuit for high-speed slew rate and pure sound.

BTL Connection Mode

Details the BTL mode for a high-quality, high-power monaural amplifier.

Input and Power Supply Features

Highlights input switching, phase selection, quality relays, and the high-inertia power supply.

Speaker Relays and Wiring

Focuses on speaker relay impedance reduction and internal OFC wiring for signal transmission.

Circuit Board and Metering

Details PCB treatment for dielectric effect and the analog power meters.

Chassis and Insulators

Covers chassis construction, speaker terminals, AC inlet, and vibration-damping insulators.

Names and Functions

Front Panel Overview

Identifies and explains the front panel's indicators and controls.

Indicators and Operation Controls

Explains standby/operation indicators and the main operation switch.

Input Selection Controls

Explains how to select input sources and indicates the selected input.

Display and BTL Mode Controls

Covers display modes and BTL monaural operation indication.

Power Meters

Explains the function and operation of the unit's power meters.

Rear Panel Overview

Identifies and explains connectors and switches on the rear panel.

Mode Selection and Power Switches

Explains switches for stereo/BTL mode and the main power.

Input and Grounding Terminals

Details phase inversion, signal ground, and unbalanced input terminals.

Advanced Input and Speaker Connections

Explains balanced input and speaker terminals for various connection modes.

Accessory and Remote Connections

Covers AC power input and remote control connections.

Memory Reset Function

Instructions for restoring the unit's settings to factory defaults.

Connections

Preparation and Power Connection

Crucial steps before connecting, including power supply setup.

Connecting Audio and Remote Sources

Guides connecting input devices and remote control amplifiers.

Speaker Connection Procedures

Detailed instructions for connecting speakers in stereo and BTL modes, with safety advice.

Stereo Connection Diagram

Illustrates the wiring for normal stereophonic reproduction.

BTL Monophonic Connection Diagram

Shows the wiring for BTL monaural reproduction using two units.

Bi-Amplifier Connection Diagram

Illustrates wiring for bi-amplification or stereophonic reproduction with multiple amplifiers.

Block Diagram

Specifications

Troubleshooting Guide

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