Pioneer sx 650 owners manual

Page 1

AM/FM STEREO RECEIVER

X-ESD

OPERATING INSTRUCTIONS

Walnut grained vinyl top, side panels and side poles are
used in the construction of this cabinet

WARNING: TO PREVENT FIRE OR SHOCK HAZARD,
DO NOT EXPOSE'THIS APPLIANCE TO RAIN OR

_ GDPIONEER MOISTURE.

Page 2

CONTENTS
Features ............................ 2 Playing Records ...................... 1 1
Stereo System Set-up .................. 3 FM-Dolby Reception .................. 11
System Connection Diagram ............ 4 Using Microphone .................... 11
System Connections ................... 6 Using AUX Terminals .................. 11
Antenna and Ground Connections ........ 7 Tape Deck Connections ................ 12
Front Panel Facilities .................. 8 Tape Deck Operations ................. 12
Effective Operation ................... 10 Specifications ..... . .................. 14
FM Reception ........ h ............... 10 Conditions Frequently Mistaken
AM Reception ...................... 10 For Malfunctions ................... 16

FEATURES

STABLE OPERATION IN FM TUNER SECTION

The FM front and includes junction type FET and a high
precision 3-ganged variable capacitor. The IF amplifier
circuit employs a high integration density lC developed by
Pioneer and 2 dual element phase-linear ceramic filters with
a buffer amplifier between to prevent mutual intervention.
Stable multiplex circuit operation is assures by the PLL IC
design to which a newly developed type of negative feed-
back has been applied. This design provides low distortion
with a high degree of reliability. In all important respects,
including station drift, image rejection ratio, S-N ratio,
capture ratio, and sensitivity, the crystal clear FM reception
that this tuner provides will satisfy the most discriminating
taste.

WIDE POWER BANDWIDTH, LOW DISTORTION

.POWER AMPLIFIER

The use ofa first stage differential amplifier, and a pure
complementary power amplifier allows high power output
over a wide bandwidth to be obtained with a very low
distortion rate. SX-650 delivers

Continuous power output of 35 watts* per
channel, min., at 8 ohms from 20 Hertz to
20, 000 Hertz with no more than 0.3 % total

harmonic distortion.

PRE AMPLIFIER DESIGN ASSURES HIGH
FIDELITY REPRODUCTION

By using a differential amplifier in the first stage input
impedance variations due to frequency are minimized, and
a PHONO input capability of 200mV with a distortion
0.1% at lkHz is obtained. This, in combination with the
careful selection of semiconductor used, resistor tolerances
within 5%, capacitors within 2%, holds RIAA deviation to
within i0.3dB (30Hz~lSkHz). You are assured of faithful

reproduction of your records over a wide dynamic range
with no discernible distortion.

CR type tone controls with newly developed center deféat
type control knobs are used in the control amplifier sec-
tion. Placing both the BASS and TREBLE control knobs in
the OFF position, the tone control circuitry is bypassed and
flat frequency response is obtained.

HIGH RELIABILITY PROTECTION CIRCUIT

The protection circuit and power relay are designed to
instantaneously open the output circuit in the event of a
short in the speaker leads or current surges which may
occur without warning. This feature prevents, damage to
speakers or transistors, and also prevents click noises, from
the speakers during operation of the poiner switch. ,

IMPORTANT AUXILIARY FEATURES

High Filter Switch is provided to eliminate high frequency
noise due to scratches on the record, it will provide GdB/
octave attenuation at frequencies above 6kHz.

Two Tape Monitor Switches permit selective recording
from one tape to another when two tape decks are con-
nected to the receiver at the same time. It is thus possible
to record onto a cassette from an open reel tape deck, or
vice versa.

NEW ATTRACTIVE VISUAL DESIGN

The large tuning scale provides greater readability and
hence more precise tuning of the desired frequency. The
front panel has been designed for improved operating con-
venience.

*Measured pursuant to Federal Trade Commissions Trade
Regulation rule on Power Output Claims for Amplifiers.

STEREO SYSTEM SET-U P

The SX-650 is a stereo amplifier with built-in
AM/FM stereo tuner.

Used in combination with separately purchased
speakers and, if you desire, other program sources
such as turntable or tape deck, you can create a

PIONEER

stereo system which will provide many hours of
music listening enjoyment. With use of a micro-
phone, moreover, the SX-650 will serve as a public
address system amplifier.

Some Points to Keep in Mind when Setting Up Your Stereo System

SX-GSD Stereo
Receiver:
Connecting cables should be
no longer than necessary. An
outdoor FM antenna should
be used for FM reception.

Turntable: Protect from vibration.

Taps Deck: When placed vertically, be sure to

Close dust cover whenever possible. use reel clamps.
I Records should be stored vertically Heads should always be kept'clean.
and protected from dust and dirt. Recording tape should not be lai't
unused for long periods of time.
Avoid placing in proximity to ma-

gnetic fields.

Thick curtains will
protect compo-
nents from direct

sunlight. '

Elk-m.

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/

This method of mounting
small-sized speakers will
save space.

Cassette Deck:

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Optimum listening Furniture materials may Carpeting. Absorbs Right and left speakersI Vibration from speak-
position is slightly have an effect on sound sound. (Also effec- should have approximately ers should not be
to the rear of an quality. tive if placed in equivalent surroundings to transmitted directlyto

equilateral triangle
with the speakers
as the base.

INSTALLATION NOTE

front of speakers)

the rear and sides.

(Bass will be accentuated
if the rear of the speaker
comes into direct contact
with the wall.)

the floor. (Bookshelf
type speakers should
be placed on stands or
concrete blocks.)

To insure trouble free operation, the following conditions should be avoided when choosing a suitable

location:

0 Direct sunlight or immediate vicinity of heaters,
etc.
0 Poor ventilation, or excessive moisture or dust.

a Surfaces that are slanted or subject to vibration.
0 Spilled alcohol, insecticide sprays, etc. Highly
inflammable materials.