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Pioneer A-105 User Manual

Pioneer A-105
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Y
PIONEER
The
Art
of
Entertainment
P2005
105
STEREO
AMPLIFIER
(
PHONEERE
cence
smvene
\
208
f=}
The
illustration
shows
model
A-205.
Operating
instructions
WARNING
:
to
prevent
FIRE
OR
SHOCK
HAZARD,
DO
NOT
EXPOSE
THIS
APPLIANCE
TO
RAIN
OR
MOISTURE.
The
lighting
flash
with
arrowhead,
within
an
equilateral
triangle,
is
intended
to
alert
the
user
to
the
|
presence
of
uninsulated
"dangerous
voltage"
within
the
product's
enclosure
that
may
be
of
sufficient
magnitude
to
constitute
a
risk
of
electric
shock
to
persans.
CAUTION
RISK
OF
ELECTRIC
SHOCK
DONOT
OPEN
CAUTION:
TO
PREVENT
THE
RISK
OF
ELECTRIC
SHOCK,
DO
NOT
REMOVE
COVER
(OR
BACK}.
NO
USER-
SERVICEABLE
PARTS
INSIDE.
REFER
SERVICING
TO
QUALIFIED
SERVICE
PERSONNEL.
The
exclamation
point
within
an
equilateral
tiangle
is
intended
to
alert
the
user
to
the
presence
of
important
Operating
and
maintenance
(servicing)
instructions
in
the
literature
accompanying
the
appliance.
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Pioneer A-105 Specifications

General IconGeneral
Frequency Response5Hz-100kHz (+0dB, -3dB)
Input Impedance47 kOhms (line)
Dimensions420 x 125 x 337 mm
Weight6.7 kg
Signal to noise ratio: Line100 dB
Total Harmonic Distortion (20Hz-20kHz, 50W)0.08%
Power output per channel50 Watts
Total Harmonic Distortion (THD)0.08%
Signal-to-Noise Ratio100 dB (line)
Total harmonic distortion0.08%
Power Output (8 ohms, 20Hz-20kHz, 0.08% THD)50 W
Frequency Response (+0dB, -3dB)5 Hz to 100 kHz
Power Output50W per channel (8 ohms, 20Hz-20kHz, 0.08% THD)

Summary

Safety and Important Notices

Fire and Shock Hazard Warning

Warning to prevent fire or shock hazard by keeping the appliance away from rain or moisture.

Electrical Shock Caution

Caution against opening the unit to prevent risk of electric shock.

Important Safety Symbols

Explains the meaning of lightning flash and exclamation point safety symbols.

Product Features

High Power Output

Details power output specifications for models A-105 and A-205.

Wide-Range Linear Circuit

Describes the current feedback circuit for improved operating stability.

DIRECT Circuit for High Fidelity

Ensures high fidelity playback with consistent frequency characteristics and clarity.

Bi-directional Dubbing Capability

Allows dubbing between two cassette decks.

Dual Speaker System Support

Notes the availability of speaker terminals for two systems on the A-205 model.

Voltage Selector Switch

Line Voltage Selector Operation

Instructions for setting the line voltage selector switch before plugging in the power cord.

Installation Guidelines

Location Requirements

Guidance on selecting a well-ventilated location, avoiding high temperatures, humidity, and direct sun.

Ventilation Clearance

Ensures adequate space around the unit for heat dissipation to prevent overheating.

Power Cord Safety

Precautions for handling the power cord to prevent electric shock or fire hazards.

External Surface Maintenance

Instructions for cleaning the unit's exterior using appropriate cloths and mild cleansers.

Front Panel Controls and Indicators

Power Switch

Button to turn the unit's power ON and OFF.

Input Selector Switch

Selects the desired playback source from various inputs like PHONO, CD, TUNER, LINE, TAPE.

Volume Control

Knob used to adjust the audio playback volume level.

TAPE 2 MONITOR Switch

Used for adaptor components or cassette decks connected to TAPE 2 MONITOR terminals.

Front Panel Controls (Continued)

DIRECT Switch

Bypasses tone controls and filters for pure sound reproduction.

LOUDNESS Switch

Boosts low and high frequencies for listening at low volume levels.

Balance Control

Adjusts the sound balance between left and right speakers.

TREBLE Tone Control

Adjusts the high-frequency tone response.

BASS Tone Control

Adjusts the low-frequency tone response.

Speaker System Selectors (A-205)

Switches between SPEAKERS A and SPEAKERS B systems for the A-205 model.

Headphones Jack

Port for connecting headphones, which may mute speaker output.

Rear Panel Connections

Audio Input Terminals

Terminals for PHONO, CD, TUNER, LINE, and TAPE connections.

TAPE REC/PLAY Terminals

Terminals for recording and playback of TAPE 1/DAT and TAPE 2/MONITOR.

Speaker Output Terminals

Terminals for connecting SPEAKERS A and SPEAKERS B systems (A-205 only).

AC Power Inlet

Socket for connecting the power cord to the AC wall socket.

Voltage Selector

Component for selecting the appropriate AC input voltage.

Rear Panel Outlets and Terminals

AC Outlets (Switched and Unswitched)

Provides switched and unswitched power outlets for connected equipment.

Speaker A Terminals

Connects SPEAKERS A system (left/right channels) for A-205 model.

Ground Terminal

Turntable ground terminal to reduce hum.

Speaker Terminals (A-105)

Connects speaker systems (left/right channels) for A-105 model.

Connection Diagrams

CD Player Connection

Diagram showing how to connect a CD player to the unit.

Cassette Deck Connection

Diagram showing connections for DAT/Cassette decks for playback and recording.

Tuner Connection

Diagram illustrating the connection of an FM-AM tuner.

Turntable Connection

Diagram showing how to connect a turntable.

Speaker Connections

Diagram showing connections for speaker systems to the amplifier.

Connection Component Identification

Audio Source Components

Identifies CD players, DAT/Cassette decks, adaptor components, and tuners.

Speaker System Identification

Identifies speaker systems A and B for models A-205 and A-105.

Turntable and AC Connection

Identifies the turntable connection and the AC wall socket connection.

Connecting Cords and Impedance

Speaker Cord Connection

Step-by-step guide on stripping wire and connecting speaker cords to terminals.

Speaker Impedance Requirements

Specifies the required speaker impedance for models A-205 and A-105.

Input/Output Cord Connection

Instructions for connecting input/output cords using RCA plugs.

Operating Procedures

Before Beginning Operations

Initial setup steps including power, speaker selection, balance, and switch settings.

Playback Procedures

Steps to select playback source and adjust volume for listening.

Recording Tapes

Instructions for selecting recording equipment and starting recording.

Copying Tapes

Guide on recording from one deck to another for tape copying.

Advanced Operations

Tape Copying Direction

Selecting copying direction using Input Selector and TAPE 2 MONITOR switches.

Using TAPE 2 MONITOR Terminals

How to use adaptor components or a cassette deck connected to TAPE 2 MONITOR terminals.

TAPE 1/DAT Automatic Selection

Note on automatic selection of TAPE 1/DAT after power interruption.

Troubleshooting Guide

No Power Supplied

Troubleshooting steps for when the unit does not power on.

No Sound

Steps to diagnose and resolve issues with no sound output.

No Sound from One Speaker

Steps to fix issues where sound is only from one speaker.

Recording or Copying Issues

Troubleshooting steps for problems with tape recording or copying.

Specifications (Model A-205)

Amplifier Section Specs (A-205)

Detailed specifications for the amplifier section, including power output and distortion.

Input/Output Specs (A-205)

Specifications for input sensitivity, output level, and frequency response.

Tone Control and Loudness Specs (A-205)

Details on tone control range and loudness contour effect.

Power Supply and Miscellaneous (A-205)

Specifications for power requirements, outlets, dimensions, and weight.

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