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Pioneer QX-646 - User Manual

Pioneer QX-646
20 pages
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OPERATING
INSTRUCTIONS
(Dr:roNEEFl'

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Summary

LINE VOLTAGE AND FUSE

CHANGING LINE VOLTAGE SETTING AND FUSE

Procedure for adjusting the unit's power voltage setting and checking the fuse rating.

FUSE REPLACEMENT

Instructions for replacing a blown fuse in the receiver unit.

QX-646 FEATURES

PERFORMANCE

4-Channel Stereo Performance

Details on achieving discrete 4-channel playback from tape and CD-4 discs.

4-channel Reproduction from Matrix 4-channel Source

How the receiver reproduces 4-channel sound from matrix records and FM stereo broadcasts.

Matrix Reproduction from 2-channel Stereo Source

Enhancing 2-channel stereo sources into 4-channel sound using matrix circuits.

2-channel Stereo Performance

How the receiver provides conventional 2-channel stereo output using front speakers.

COMPOSITION OF A 4-CHANNEL STEREO SYSTEM

INSTALLATION GUIDELINES

Guidelines and warnings for setting up the 4-channel system components safely and reliably.

ROOM ACOUSTICS FOR AUDIO

Advice on how room acoustics affect sound quality and potential improvements.

SPEAKER SYSTEM ARRANGEMENT ADVICE

Recommendations for selecting and arranging speaker systems for optimal 4-channel performance.

HINTS FOR OPERATING CD-4 DISC RECORDS

TURNTABLE REQUIREMENTS FOR CD-4

Essential specifications for turntables used with CD-4 disc records, including motor and tonearm needs.

PHONO CARTRIDGE FOR CD-4

Importance of using an exclusive cartridge for accurate CD-4 record reproduction and proper installation.

RECORD HANDLING AND CARE

Proper methods for handling CD-4 records to prevent noise and maintain service life.

STYLUS CLEANING FOR CD-4

Importance of keeping the stylus clean for optimal sound quality and 4-channel reproduction.

SPEAKER SYSTEMS: PLACEMENT AND CONNECTIONS

SPEAKER SYSTEM ARRANGEMENTS

Guidance on placing front and rear speaker systems for an effective 4-channel listening experience.

SPEAKER CONNECTION PROCEDURES

Detailed steps for connecting speaker wires to the receiver terminals, ensuring correct polarity.

ANTENNAS AND GROUND CONNECTIONS

FM ANTENNA SETUP

Guidance on selecting and connecting FM antennas for optimal reception quality.

AM ANTENNA SETUP

Instructions for connecting AM antennas, including ferrite and lead types, for best signal reception.

GROUND CONNECTION FOR SAFETY

Importance of connecting the receiver to a good ground for safety and noise-free performance.

CONNECTION OF TAPE DECK

RECORDING VIA TAPE DECK

Steps for connecting a tape deck to the receiver for recording signals from various sources.

PLAYBACK VIA TAPE DECK

Instructions for connecting a tape deck to the receiver for playing back recorded tapes.

REC;PB CONNECTOR FOR TAPE DECKS

Using the DIN-type REC/PB connector for simplified tape deck connections.

CONNECTION OF TURNTABLE

CONNECTION DIAGRAM

AUX INPUTS EXPLANATION

Clarification on the purpose and use of the auxiliary input terminals for external sound sources.

FRONT PANEL FACILITIES

Front Panel Controls and Indicators

Overview of indicator lamps, meters, and input/output jacks on the front panel.

Tone and Balance Controls

Explanation of controls for adjusting bass, treble, and channel balance between speakers.

Operational Switches and Volume

Description of switches for mode selection, muting, tape monitoring, and the main volume control.

PREPARATIONS BEFORE OPERATION

BEFORE SWITCHING THE POWER ON

Initial control settings required before powering on the receiver for the first time.

CONFIRMATION OF CONNECTIONS AND SOUND VOLUME ADJUSTMENT

Steps to verify speaker connections and adjust sound levels for all channels.

FM AND AM RECEPTION

FM RECEPTION

Guide to tuning FM stations, using the signal meter, and understanding FM stereo indicators.

AM RECEPTION

Instructions for tuning AM stations and achieving the best signal reception.

RECORD PLAYING

USING THE AUX JACK

How to connect and play audio sources through the AUX input terminals.

BEFORE CD-4 RECORD PLAYING

Essential adjustments required before playing CD-4 discs, including carrier level and separation.

USING A TAPE DECK

TAPE PLAYBACK

Steps for setting the mode and controls to play back different types of tape recordings.

TAPE RECORDING

How to record audio signals from selected sources onto a tape deck.

Monitoring of a Recording in Progress

Using the TAPE MONITOR switch to listen to recordings as they are being made.

TAPE DUPLICATING

Instructions for duplicating tapes using two connected tape decks.

ABOUT CD-4 RECORD

MATRIX 4-CHANNEL DECODER

Regular Matrix

Explanation of how the Regular Matrix (RM) system decodes 4-channel signals.

SQ Matrix

Explanation of how the SQ Matrix system decodes 4-channel signals and its sound characteristics.

CONDITIONS FREQUENTLY MISTAKEN FOR MALFUNCTION

WHEN LISTENING TO BROADCASTS

Troubleshooting common noises encountered during FM and AM radio reception.

WHEN PLAYING RECORDS

Diagnosing and resolving common noise issues associated with playing vinyl records.

SPECIFICATIONS

Semiconductors

List of semiconductor components used in the receiver, including FETs, ICs, transistors, and diodes.

Amplifier Section Specifications

Technical details of the amplifier's power output, harmonic distortion, and frequency response.

FM Tuner Section Specifications

Performance metrics for the FM tuner, such as sensitivity, selectivity, and capture ratio.

AM Tuner Section Specifications

Performance metrics for the AM tuner, including usable sensitivity and selectivity.

Miscellaneous Specifications

Other technical specifications like power requirements, dimensions, and weight.

Furnished Parts

List of items included with the receiver, such as antennas, test records, and fuses.

CD-4 Demodulator Section Specifications

Technical details related to the CD-4 demodulator's input sensitivity, distortion, and signal-to-noise ratio.

Pioneer QX-646 Specifications

General IconGeneral
BrandPioneer
ModelQX-646
CategoryReceiver
LanguageEnglish

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