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Pioneer A-8 User Manual

Pioneer A-8
16 pages
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Pioneer A-8 Specifications

General IconGeneral
Power output80W per channel into 8Ω (20Hz-20kHz, 0.05% THD)
Frequency response5Hz-100kHz (±1dB)
Total harmonic distortion0.05% (20Hz-20kHz, 80W)
Input sensitivity0.2mV (MC), 2.5mV (MM), 150mV (line)
Dimensions420 x 125 x 370mm
Weight11.5kg
Damping factor60
Speaker load impedance4Ω-16Ω

Summary

Safety Instructions

General Usage and Warning Guidelines

Covers reading and retaining instructions, heeding warnings, and following operational guidelines for safe use.

Appliance Placement and Environment Safety

Details precautions for water exposure, stable location, ventilation, and avoiding specific environments.

Maintenance and Service Precautions

Instructions on cleaning, power line safety, periods of nonuse, liquid entry, and damage requiring service.

Amplifier Features

Power Amplifier Design and Technology

Details the Non-Switching Amplifier system, DC servo circuit, and Nested Feedback Loops (NFL) technology.

Signal Processing and Input Options

Highlights Line Straight Switch, MM/MC Equalizer with High S/N Ratio, and cartridge load selectors.

User Interface and Display Features

Covers Pictographic Input/Output Display, Protection Indicator, LED Power Meter, and panel design.

Rear Panel Facilities and Connections

Rear Panel Layout Overview

Identifies input/output jacks, terminals, and AC outlets on the amplifier's rear panel.

System Connection Diagram

Illustrates how to connect various components like turntables, tuners, and speakers to the amplifier.

Connecting Audio Components

Speaker System Connections

Guides on connecting speaker systems, including polarity, impedance, and cord stripping procedures.

Using AC Power Outlets

Explains how to utilize the switched and unswitched AC outlets on the amplifier's rear panel.

Connecting Specific Devices

Turntable and Tuner Connections

Instructions for connecting turntables via PHONO jacks and tuners via TUNER jacks.

Auxiliary and Tape Deck Connections

Guides for connecting AUX devices, and TAPE decks for recording and playback.

Front Panel Controls and Functions

Power and Source Selection Controls

Details the POWER SWITCH and FUNCTION SWITCHES for selecting audio sources.

Tone and Volume Adjustment Controls

Explains the TREBLE CONTROL, BASS CONTROL, and VOLUME CONTROL for sound shaping.

Special Function Switches

Covers MUTING switch for temporary volume reduction and PHONES JACK for private listening.

Additional Front Panel Controls

Recording Output and Mode Selection

Details the REC OUT SELECTOR SWITCH and MODE SELECTOR for recording and listening modes.

Signal Path and Cartridge Settings

Explains LINE STRAIGHT-OFF, PHONO MM/MC, MC LOAD, and MM LOAD switches.

Front Panel Indicators and Switches

Speaker and Signal Status Indicators

Details SPEAKERS A/B, BALANCE, LINE STRAIGHT, MODE, TONE, LOUDNESS indicators.

Operation Indicators and Controls

Explains SUBSONIC FILTER, LOUDNESS switches, BALANCE control, SPEAKERS switches, and meters.

Operating the Amplifier

Pre-Operation Setup Checklist

Outlines the initial settings for controls and switches before powering on the unit.

Playing Records and Adjusting Sound

Guides on playing records using MM/MC cartridges and adjusting sound with tone controls.

Listening to Broadcasts and Other Sources

Instructions for tuning into broadcasts and listening to external components via AUX.

Using Tape Decks

Playing Back Tapes

Instructions on how to play back tapes from connected tape decks using TAPE 1 or TAPE 2.

Recording Audio Tapes

Guides on selecting sources and setting up the amplifier for recording onto tape decks.

Copying (Dubbing) Tapes

Details the process of copying tapes between two connected tape decks using REC OUT SELECTOR.

Effective Usage Tips

Optimizing MM Cartridge Performance

Guides on setting load capacitance for MM cartridges to achieve flat frequency response.

Optimizing MC Cartridge Performance

Instructions on setting load resistance for MC cartridges to match impedance and sound quality.

Advanced Usage Features

Peak Power Indicator Usage

Explains the peak power indicator for output level monitoring and its measurement guidelines.

Function and REC OUT Selector Interaction

Details how FUNCTION and REC OUT SELECTOR switches control tape output signals.

Troubleshooting Common Issues

No Sound and Single Channel Issues

Diagnoses and resolves problems like no sound, sound in one channel, or no stereo effect.

Record Playback and Tape Deck Problems

Addresses issues during record playback like howl or humming, and tape deck recording/playback failures.

Technical Specifications

Moving and Installation Precautions

Handling and Transporting the Unit

Provides essential precautions for moving the unit, such as holding points and surface protection.

Connecting External Graphic Equalizer

Illustrates connections for using the Graphic Equalizer (SG-9800) with the amplifier.

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