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Sansui AU-777A User Manual

Sansui AU-777A
20 pages
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Sansui AU-777A Specifications

General IconGeneral
TypeIntegrated Amplifier
Damping Factor40
Input Sensitivity180mV (line)
Dimensions400 x 125 x 330mm
Weight11.2kg
Speaker load impedance4 - 16 ohms
Total Harmonic Distortion (THD)0.1%
Signal to Noise Ratio85 dB
Channel separation50 dB
OutputSpeaker
SemiconductorsTransistors
Frequency Response10Hz to 30kHz

Summary

SWITCHES AND CONTROLS

Mode and Input Selection

Describes the Mode switch for stereo/mono and the Input Selector for choosing audio sources.

OPERATIONS

Speaker Connection

Guide for connecting one or two sets of speakers to the amplifier's terminals.

Record Playing Setup

Instructions for connecting record players and listening to stereo or monophonic records.

Tape Recorder Operations

Instructions for connecting, recording, playing, and monitoring with tape recorders.

ELECTRONIC CROSSOVER SYSTEM

Crossover System Explanation

How the amplifier enables an electronic crossover system for multi-amplifier setups.

MAINTENANCE

Hum and Howling Troubleshooting

Common causes and solutions for hum and howling noises experienced with the amplifier.

Power Fuse and Quick-Acting Fuses

Details on replacing power and quick-acting fuses and troubleshooting blown fuses.

SPECIFICATIONS

Basic Amplifier Section Specifications

Technical specifications for the amplifier's power output, distortion, and frequency response.

Pre-Amplifier Section Specifications

Detailed specifications for the pre-amplifier section, including input sensitivity and noise levels.

CHARACTERISTICS

TROUBLESHOOTING CHART

PARTS LAYOUT

BLOCK AND LEVEL DIAGRAMS

System Block Diagram

A high-level block diagram illustrating the signal flow and main sections of the amplifier.

ALIGNMENT

Test Points and Output Adjustment

Identifies key test points and outlines the procedure for adjusting the main amplifier section output.

Current Adjustment Procedure

Details the steps for adjusting the DC bias current in the main amplifier section.

PRINTED CIRCUIT SHEETS AND PARTS LIST

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