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Technics SA-GX790

Technics SA-GX790
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Technic
AV Control Stereo Receiver
SA-GX790/GX690
SA-GX490/GX 390/GX290
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Operating Instructions
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Technics SA-GX790 Specifications

General IconGeneral
Tuning rangeFM, MW
Surround outputDolby Pro Logic
Power Output100 W per channel (8 ohms)
Frequency Response20Hz to 20kHz
Input Sensitivity200 mV (line)
Signal-to-Noise Ratio100 dB
Dimensions430 x 150 x 350 mm
Speaker load impedance8 ohms
Video ConnectionsComposite video

Summary

Precautions

Safety Guidelines

Covers power source, polarization, cord protection, and nonuse period safety.

Installation Environment

Details grounding, water, moisture, and heat considerations for installation.

Placement Guidelines

Provides advice on ventilation, foreign material, magnetism, stacking, and surface placement.

Maintenance and Cleaning

Outlines cleaning procedures and materials to avoid for unit maintenance.

Service Requirements

Explains when professional service is needed and user limitations.

Accessories

Power Supply and Antennas

Lists the included AC power cord, AM loop antenna, and FM indoor antenna.

Remote Control and Batteries

Details the remote transmitter, its models, and required batteries.

Front Panel Overview

SA-GX790 Front Panel Layout

Illustrates and labels the controls specific to the SA-GX790 model.

SA-GX790 GX690 Front Panel Layout

Illustrates and labels controls common to SA-GX790 and SA-GX690.

Control Identification and Function

Lists numbered controls, their names, and relevant page references.

Audio Equipment Connections

Connecting Audio Sources

Details connections for CD players, tape decks, and turntables.

Remote Control and AC Outlet Functionality

Explains remote control linking and switched AC outlet features.

Cooling Fan Information

Notes the operational conditions for the unit's cooling fan.

Video Equipment Connections

Connecting VCRs and Video CD Changers

Details how to connect video sources like VCRs and CD changers.

TV and Speaker Terminal References

Mentions connecting to TV and refers to speaker terminal pages.

Antenna Connections

FM Antenna Setup

Instructions for connecting FM indoor and outdoor antennas.

AM Antenna Setup and Mounting

Details for connecting and mounting the AM loop antenna.

Speaker Connections

Speaker Placement Recommendations

Advice on positioning speakers for optimal surround sound.

Front Speaker Connections and Impedance

Details for connecting front speakers and impedance requirements.

Surround Speaker Connections

Instructions for connecting surround speakers to the unit.

Center Speaker Connections

Instructions for connecting the center speaker to the unit.

Subwoofer Connection and Adjustment

How to connect and adjust a subwoofer for enhanced bass.

Basic Operations

Initial Setup: Power and Speaker Selection

Steps to turn on the unit and select speaker systems.

Source Selection and Playback

How to choose input sources and start playback.

Sound Adjustments and Muting

How to control tone, balance, loudness, and mute sound.

Headphone Use and VCR Input Switching

How to connect headphones and select VCR input terminals.

Listening to Radio Broadcasts

Direct Access Tuning

Tuning to stations using numeric frequency input.

Sequential Tuning

Tuning stations by scanning up or down frequencies.

FM Stereo and Noise Handling

How stereo reception is indicated and how to reduce FM stereo noise.

Preset Tuning for Radio Stations

Presetting Capacity and Methods

Overview of how many stations can be preset and available methods.

Automatic Memory Presetting

Automatically searches and saves broadcast stations into memory.

Manual Memory Presetting

User-defined saving of broadcast stations into desired channels.

Preset Tuning Operations

Manual Memory Presetting Steps

Detailed procedure for manually saving radio stations.

Listening to Preset Stations

How to recall and listen to saved radio stations.

Memory Management and Backup

Information on memory retention and accidental erasure.

Enjoying Sound with Dolby Pro Logic

Understanding Surround and 3 Stereo Modes

Explains the effects of SURROUND and 3 STEREO listening modes.

Setting the Center Mode

Adjusting center mode for optimal Dolby Pro Logic playback.

Adjusting Speaker Output Levels

Selecting Speaker Systems and Modes

Steps to choose speaker systems and listening modes for adjustment.

Using the Test Signal for Calibration

How to use the test signal to calibrate speaker output levels.

Volume and Balance Adjustments

Fine-tuning speaker output levels using volume and balance controls.

Adjusting Surround Speaker Delay Time

Adjusting Delay for Surround Mode

Setting the delay time for optimal surround sound effect.

Calculating Optimal Delay Time

Methods for determining the correct delay settings based on speaker distance.

Enjoying Sound and Stereo Modes

Selecting Listening Modes and Sources

Activating SURROUND/3 STEREO modes and choosing playback sources.

Using Theater Effect

How to activate and use the THEATER EFFECT feature.

Enjoying Sound with SFC

Adjusting Sound Field Parameters

Overview of adjusting volume and delay for SFC sound.

Adjusting Center and Surround Speaker Volume

Specific steps for adjusting center and surround speaker volumes.

Adjusting Delay Time for SFC

Setting delay time within the SFC sound function.

Making Recordings

Recording on the Tape Deck

Instructions for recording audio/video to a tape deck.

Recording on the VCR (VCR 1)

Instructions for recording audio/video to VCR 1.

Recording from VCR 2

How to record audio/video from VCR 2.

Recording Audio Sources

Recording from Audio Sources

Steps for recording audio signals from various sources.

Precautions for Audio Recording

Important notes regarding VCR/Video CD signals during audio recording.

Help and Display Functions

Using the HELP Function

How to access and use the help feature for operational guidance.

On-Screen Display Functionality

How to use the on-screen display for operational information.

Product Service and Information

Product Service Guidelines

Advice against self-repair and referring to qualified personnel.

Product Information and Assistance

Where to find service and operational assistance.

Troubleshooting Guide

FM Broadcast Troubleshooting

Solutions for hissing, noise, and distortion during FM listening.

AM Broadcast Troubleshooting

Solutions for unusual sounds and interference during AM listening.

General Operational Problems

Solutions for power issues, no sound, overload, and error messages.

Technical Specifications

Amplifier and Tuner Specifications

Detailed electrical and performance characteristics of amplifier and tuners.

Video and General Specifications

Video section details and general power, dimension, and weight info.

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