Pioneer A-351R User Manual

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Thank you for buying this PIONEER product.
Please read through these operating instructions so you will know
how to operate your model properly. After you have finished reading
the instructions, put them away in a safe place for future reference.
In some countries or regions, the shape of the power plug and power
outlet may sometimes differ from that shown in the explanatory
drawings. However, the method of connecting and operating the unit
is the same.
WARNING: to prevent FIRE OR SHOCK HAZARD, DO
NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.
“This product complies with the Radio Interference require-
ments of the EC (European Community) Directive 87/308/EEC.”
IMPORTANT 1
The lightning 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 persons.
IMPORTANT 2
If the apparatus is fitted with AC mains power outlet(s),
see REAR PANEL FACILITIES for convenient
connection of additional Hi-Fi component(s). Make all
connections to the AC outlet(s) and the signal terminals
first. Connect the plug to the wall socket last (make
sure that the power switch is off.)
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT 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.
FOR USE IN THE UNITED
KINGDOM
The wires in this mains lead are coloured in
accordance with the following code:
Blue: Neutral
Brown: Live
As the colours of the wires in the mains lead of this
apparatus may not correspond with the coloured
marking identifying the terminals in your plug proceed
as follows:
V) PIONEER’
The Art of Entertainment
The exclamation point within an equilateral triangle is
intended to alert the user to the presence of important
operating and maintenance (servicing) instructions in
the literature accompanying the appliance.
The wire which is coloured blue must be connected to
the terminal which is marked with the letter N or
coloured black.
The wire which is coloured brown must be connected
to the terminal which is marked with the letter L or
coloured red.
Do not connect either wire to the earth terminal of a
three pin plug.
Equipment sold in the U.K. is not supplied with a power
plug.

Pioneer A-351R Specifications

Power

power requirements	240 Volts, 50/60 Hz
power consumption	325 W

Audio Performance

continuous power output (20 Hz to 20 kHz)	30 W + 30 W
DIN continuous power output (1 kHz)	45 W + 45 W
dynamic power output	60 W

Input/Output Specifications

phono input sensitivity/impedance	2.5 mV/50 kQ
cd, tuner, line, tape 1/dat, tape 2/adpt input sensitivity/impedance	150 mV/50 kQ
tape 1/dat, tape 2/adpt output level/impedance	150 mV/1 kQ

Weight and Dimensions

dimensions	420 (W) x 336 (D) x 125 (H) mm
weight	5.6 kg

Summary

Product Features

Integrated Remote Control

Convenience combined with no-compromise performance for Pioneer audio equipment with SR mark.

Power Output and Impedance

45W + 45W at 4 ohms, DIN, with low-impedance driving capability for better digital sound.

Direct Circuit Functionality

The "DIRECT" button bypasses tone and balance controls for highest purity results.

Active Tone Control System

Automatically boosts lows and highs when volume is lowered to compensate for bass and treble.

Input and Speaker Connections

Features 6 input options and connections for two pairs of speaker systems.

Installation and Maintenance

Installation Location Guidelines

Install in a well-ventilated, dry location away from high temperatures or direct sun.

Power Cord Safety Precautions

Handle plug carefully, avoid wet hands, do not pinch or knot the cord.

External Surface Care

Wipe with a soft cloth, avoid chemicals, thinners, or sprays.

Front Panel Controls Overview

Power Standby/On Switch

Controls the amplifier's power state; indicator shows standby mode.

Active Tone and Balance Controls

Adjust tone/balance based on volume; balance affects left/right sound.

Input Selector Buttons

Selects playback source: PHONO, TUNER, CD, LINE, TAPE 1/DAT, TAPE 2/ADPT.

Additional Front Panel Controls

Volume Control

Use to adjust the playback volume level.

Remote Sensor and Headphone Jack

Receives remote signals; headphone jack for private listening.

Speaker A/B Selector Buttons

Selects speaker systems A or B for playback.

Direct Mode Button

Bypasses tone controls for pure sound reproduction.

Rear Panel Connectors

Input Terminals

PHONO, TUNER, CD, LINE, TAPE 1/DAT, TAPE 2/ADPT terminals.

Speaker and Control Outputs

SPEAKERS A/B terminals, CONTROL OUT jack.

Ground and Power Connections

Turntable ground terminal (GND) and Power cord connection.

Connection Diagrams

Audio Source Connections

Connects turntables, tuners, CD players, VCRs, and tape decks.

Speaker System Wiring

Connects speaker systems B (R/L) and A (L/R).

Power Connection

Connects the unit to an AC wall socket or audio timer.

Connection Procedures

Speaker Cord Installation

Steps for stripping wire and securing speaker cords into terminals.

Input/Output Cord Setup

How to connect white (L) and red (R) plugs securely.

Remote Control Cord Linking

Connecting Pioneer components for system operation using control cords.

Amplifier Operations

Pre-Operation Checks

Set power, speaker selection, and DIRECT button before use.

Playback Guide

Select input, adjust volume, tone, and balance controls.

Recording and Copying Tapes

Procedures for recording tapes and copying between decks.

Timer Recording Setup

Using an audio timer for unattended recording operations.

Remote Control Usage

Battery Installation

How to insert AAA batteries correctly into the remote compartment.

Operating Range and Angle

Details the effective distance and angle for remote control operation.

Battery Handling Precautions

Guidelines for correct polarity, mixing batteries, and battery types.

Remote Control Button Functions

Deck and Tape Controls

Buttons for operating cassette decks, tape operations, and selectors.

Source and Power Controls

Buttons for CD power, tuner power, and selecting input sources.

Volume and Tuning Controls

Buttons for adjusting volume and tuning stations.

Troubleshooting Common Issues

Power and Sound Problems

Solutions for no power, no sound, or one-speaker sound issues.

Recording and Remote Issues

Troubleshooting tape copying, recording, and remote control malfunctions.

Technical Specifications

Amplifier Performance Metrics

Continuous power, THD, frequency response, input sensitivity, S/N ratio.

Power, Dimensions, and Accessories

Power requirements, consumption, unit dimensions, and included accessories.