Sylvania RS4743 Operating Instructions Manual

OPERATING THE SYLVANIA STEREO RECEIVER

RS4743

TABLE

Introduction

Accessory
Initial

Connecting

Protective
Sound

Sound

Sound

Specifications
Warranty

OF CONTENTS

Page

2

Components

Hook-Up

Antenna Connections
Phono Jacks
Aux Jacks
Tape Jacks
Pre-Amp to Amp Jacks
Speaker Connection
Unswitched Outlets 5
Switched Outlet 5

System
System
System

AM Tuning
FM Tuning
Phono

7

Aux
Tape Play
Tape Recording

8

4

Accessory

4

4

4

Circuits

Indicators
Controls
Operation

7

7

7

7

8

3

Components

4

4

5

5

6

6

7

INTRODUCTION

You are the owner of one of the most
sophisticated and versatile audio instru­ments on the market.

Center tune and signal strength meter-

ing make possible outstanding tuning

accuracy.
The easy-to-read control panel has push

button controls.

Your receiver features a switched main

The possibility of attaching a number of
accessory components is a feature of
which you will certainly want to take ad­vantage.

We have mentioned just a few of the many
exciting features. As you read these

instructions, you will discover that you

have chosen a receiver capable of being
the heart of a truly professional audio
system.

and remote speaker system so you can
operate all your speakers from the control

panel.

WARNING:
OR ACCESSORY COMPONENTS TO RAIN OR MOISTURE. IF SUCH EXPOSURE OCCURS,
REMOVE THE PLUG FROM THE ELECTRICAL OUTLET AND HAVE THE EXPOSED RECEIVER
OR COMPONENTS CHECKED BY A COMPETENT SERVICE TECHNICIAN.

TO AVOID POSSIBLE FIRE OR SHOCK

Read carefully so you can enjoy the full

potential of your Sylvania receiver.

HAZARD,

NEVER EXPOSE THIS RECEIVER

2

INITIAL

1.

Connect speakers to appropriate terminals (N).

2.

Slide ferrite rod AM antenna assembly (con-

3. Connect leads from the FM dipole antenna (con-

4.

Plug in AC line cord (O) to a 120 volt, 60 Hz out-

HOOK-UP

See "Speaker Connection" section.
tained in separate bag) into holder (A) and

in connector.
tained in separate bag) under the 300 ohm ter-

minals (K). See "antenna connections" section
for further details.

let.

plug-

CONNECTING ACCESSORY
COMPONENTS

WARNING:

HAZARD,

WHICH DOES NOT HAVE A MANUFACTURER

SUPPLIED AUDIO OUTPUT

TO AVOID A POSSIBLE SHOCK

DO NOT CONNECT ANY ACCESSORY

JACK.

External

1.

Attach center conductor of coaxial lead-in to

2.

Attach outer shield of 75 ohm lead-in to the

Phono Jacks (B)

1.

Plug turntable cables into the appropriate left

2.

The PHONO input may be used with ceramic as

Aux

Plug the output of accessory equipment into the ap­propriate left and right jacks. Typical accessories

are:

1.

8-track, cassette, or reel to reel tape play deck.

2.

Microphone or musical instrument with pre-

FM

Antenna

the right 75 OHM FM ANTENNA terminal.
ground (left) terminal.

NOTE:

and right PHONO jacks (B). Connect ground
wire under PHONO GROUND terminal(M).

well as magnetic cartridges. Move switch (L)
to appropriate setting. CER for ceramic car­tridge or MAG for magnetic cartridge.

Jacks(C)

amplifier.

Use only one FM antenna either 75 ohm

or 300 ohm at any one time.

75 Ohm

Antenna Connections (K)
The jackplate has provisions for attaching outdoor

antennas for reception of distant stations.

External

1.

Connect lead-in wire from antenna to right AM

2.

Connect ground (left) terminal to a good earth

External

1.

Connect leads from a 300 ohm outdoor FM

Long

Line

AM

Antenna

ANTENNA terminal.
ground,

NOTE:

antenna under the two 300 OHM FM AN-

TENNA terminals.

such as a water pipe.

The AM ferrite rod must remain attached

for proper operation.

FM

Antenna

300 Ohm

Tape Jacks (D)

RECORD

Connect the record input jacks of the tape deck to
the TAPE RECORD jacks.

PLAY

Connect the playback output jacks of the tape deck
to the TAPE PLAY jacks.

Pre-Amp

CAUTION:

The pre-amplifier signals are relayed from the PRE­AMP output jacks to the power AMP jacks. By re­moving the jumpers, the signal path can be inter-

4

to Amp Jacks (E)

In all cases, turn power off before remov-

ing jumpers.

rupted to insert accessory equipment. For example,
an environmental equalizer may be used to shape
frequency response to suit room acoustics. Alter­natively, the PRE-AMP output may be routed to an
electronic cross-over network. The low frequency
output of this network would be connected to the
power AMP input while the high frequency output
should be connected to a separate slave power
amplifier. Finally, the PRE-AMP output could be
used to drive a slave power amplifier located re­motely from the receiver.

NOTE:To use both slave amp and the internal

Speaker

Use no smaller than 18 gauge wire to connect
speakers to output terminals (N). Always be sure
positive and negative outputs are connected to
corresponding positive and negative terminals on
the speaker.

MAIN
Connect the primary pair of speakers to the main

terminals.
REMOTE

Connect a secondary pair of speakers to the remote
speaker terminals. These speakers could be located
in another room.

PQ-4
Connect a pair of rear channel speakers to obtain a

four channel matrix sound. Switch (G) can be used
to turn off rear speakers when not in use.

poweramp, DO NOT use the main high level
slave amp output to feed the receiver power
amp.

Either use the slave amp low level out­put or use a commercially available "Y"
connector at the receiver PRE-AMP jacks.
One side of the "Y" goes to the accessory
input, the other goes to the AMP jacks of the
receiver.

Connection (N)

Unswitched

Plug accessory components such as turntables or
tape decks into these outlets. These outlets remain
on when the receiver power switch is turned off.

Switched

Plug associated electronic components such as an
environmental equalizer or slave amplifier into this
outlet. This outlet will be off when the receiver
power is off.

NOTE:

AC

Outlets

AC

Outlet

Do not use this outlet for turntables, tape

decks or other motor driven accessories.

(I)

(J)

PROTECTIVE CIRCUITS

Your receiver incorporates three protective sys­tems to guard against abnormal operating condi­tions that could cause damage to the receiver or
speakers.

Electronic

Protects the amplifier from improperly connected

speakers. If the output is shorted or excessively

loaded,

output signal to safe levels.

Circuit

Provides protection against AC power overloads.
If your unit suddenly goes off, push the button (H)
in to re-set the breaker. Do not hold the button de­pressed for an extended length of time. If frequent
resetting is required consult your authorized Syl-

vania service dealer.

Circuit

There are two SPEAKER BREAKERS, one for
each channel. These breakers will turn your speak­ers off automatically in case of an overload. Turn
set off and push appropriate speaker breaker but­ton (F) in. If frequent resetting is required check
speaker wiring for shorts, damaged speakers or
overload due to improper speaker impedance.

Current

the amplifier will automatically reduce the

Breaker — Main

Breaker — Speakers

Limiting

(H)

(F)

5

SOUND SYSTEM INDICATORS

P—FM

Q—TUNING Meter—indicates best FM tuning

R—AM
S—FM Dial — indicates FM station frequencies
T—Log Scale —quick reference tuning guide

MPX Indicator — light glows when you

have tuned in a stereo broadcast.

NOTE:

when needle is centered and indicates best
AM tuning when needle is as far right as pos­sible.

540 to 1600 kHz.
88 to 108mHz.
that provides log scale reference numbers

which can be used to relocate favorite sta­tions.

Indicator will not light when MONO

button is depressed.

Dial — indicates AM station frequencies

SOUND SYSTEM CONTROLS

U—TUNING — to select AM & FM stations.

V—POWER — to turn unit on and off.

W—PHONES Jack — to plug in stereo head-

phones.

X—MAIN SPEAKER Switch — to select main and

PQ-4 speaker systems.

Y—REMOTE SPEAKER Switch — to select re-

mote speaker system.

Z—TREBLE — to adjust high frequency sounds

such as flutes or violins.

AA—BASS — to adjust low frequency sounds, such

as kettle drums or organ pedal notes.

NOTE:

BB—BALANCE — to adjust for equal level from left

and right speakers.

CC—VOLUME — to adjust audio level on all

speakers simultaneously.

To increase treble, or bass turn appro-

priate knob right; to decrease turn left.
Set knob in center position for normal
or"FLAT" response.

DD—TAPE — to engage system for accessory tape

play.

NOTE:

EE—PHONO — to engage system for phonograph

disc. play.

FF—HI and LO Filters — High filter reduces high

frequency hiss and scratch noises.
Low filter reduces turntable rumble, and
acoustical feedback.

GG—AUX — to engage system for auxiliary com-

ponents.

HH—AM — to engage system for AM reception.

II

—MONO — to engage system for monaural

sources.

JJ—FM — to engage system for FM reception.

KK—LOUDNESS — to increase bass frequencies

for proper tonal balance at low listening levels.

LL—MUTE— eliminates interstation noise and

weak noisy FM stations.

Tape button must be released for

FM.

AM, PHONO, OR AUX functions.

SOUND SYSTEM OPERATION

AM

Reception

1.

Depress POWER button (V).

2.

Depress AM button (HH).

3. Rotate TUNING control (U) to select desired
station as indicated on AM dial (R). Reception
is optimum when needle on TUNING meter (Q)

is as far to right as possible.

FM Reception

1.

Depress POWER button (V).

2.

Depress FM button (JJ).

3. Rotate TUNING control (U) to select desired
station as indicated on FM dial (S). Reception is

6

optimum when needle of TUNING meter (Q)
is centered.

4.

To listen to a distant station with a weak signal,

release the MUTE switch (LL).

Phono

1.

Connect turntable to rear of unit. See

necting Accessory Components" section.

2.

Depress POWER button (V).

3. Depress PHONO button (EE).

4.

When playing monaural records, depress

MONO button (II).

5. For additional instructions refer to instruc­tions supplied with your turntable.

Aux

1.

Connect accessory unit to rear of unit. See

"Connecting Accessory Components" section.

2.

Depress POWER button (V).

3. Depress AUX button (GG).

Tape Play

1.

Connect tape equipment to TAPE PLAY jacks

on rear of unit. See "Connecting Accessory
Components" section.

2.

Depress POWER button (V).

3. Depress TAPE button (DD).

4.

For additional information consult the instruc-

tions supplied with your tape deck.

Tape Recording

1.

Connect tape equipment to TAPE RECORD

jacks on rear of unit. See "Connecting Acces­sory Components" section.

2.

Depress POWER button (V).

3. Select program source as described under sec­tions AM, FM, PHONO, or AUX. The program

"Con-

source signal is always present at the TAPE
RECORD jacks and is not affected by the set­tings of the TREBLE, BASS, VOLUME or BAL­ANCE controls.

4.

If the tape deck is a 3-head type equipped

with a tape monitor function, the recording
can be monitored by depressing the TAPE but­ton (DD). Both the PLAY and RECORD jacks
must be connected to the tape deck. See
Illustration below.

5. For additional information consult the instruc­tions supplied with your tape deck.

7

AMPLIFIER

*POWER OUTPUT

1 KHz Continuous (RMS) power 38/38w
Rated Continuous (RMS) power

Rated Continuous (RMS) power
20Hz-20KHz

20Hz-20KHz

Total

IHF
Power bandwidth (IHF) 5Hz->30KHz
Damping Factor 20

*AII power measurements are taken @ 120 volts/60 Hertz

*AII power measurements are taken @ 120 volts/60 Hertz

*AII power measurements are taken @ 120 volts/60 Hertz

continuous power both channels operating

continuous power both channels operating

continuous power both channels operating
and 8 ohms.

and 8 ohms.

and 8 ohms.

DISTORTION

Total harmonic distortion
(THD)
THD

IM distortion (60/7000, 4:1)

IM distortion (60/7000, 4:1)

continuous power, 8 ohms, 1 KHz

continuous power, 8 ohms, 1 KHz
IM distortion (60/7000, 4:1)

IM distortion (60/7000, 4:1)
rated continuous power, 8 ohms, 1 KHz

rated continuous power, 8 ohms, 1 KHz
FREQUENCY RESPONSE

Frequency response
Phono equalization RIAA standard ±1.5db

FILTERS
Low Filter

High Filter

LOUDNESS CONTOUR

Volume Control Position -30db

1000Hz 0db

TONE CONTROL ACTION

Bass Control, 50Hz ±18db

Treble Control 10KHz ±12db

INPUT SENSITIVITY
For rated continuous power, 8 ohms, 1 KHz

Power Amp 1.4v

Tape 250mv

Aux. 250mv
Phono 2.2mv

INPUT IMPEDANCE

Power Amp 100,000 ohms
Tape 100,000 ohms
Aux. 100,000 ohms

Phono 47,000 ohms

music power @ 1 KHz 100w

at

rated power input Less than .25%

at

grated power (1 KHz) Less than .15%

50Hz +6db

at

rated

at

rated

at 1/

at 1/

2

2

at

tape input 7H->^70KHz

30/30w

at

at

at

Less than .25%

Less than .25%
Less than .15%

-20db @ 20Hz

-20db @ 20Hz
12db/octave

12db/octave

-20db @20KHz

-20db @20KHz
12db/octave

12db/octave

SPECIFICATIONS

rated distortion

rated distortion

rated distortion

±1db

OUTPUT LEVEL
For rated continuous power, 8 ohms, 1 KHz
Pre-amp

Tape Output 250mv

OUTPUT IMPEDANCE
Pre-amp

Tape
SIGNAL

Phono 70db below

Phono 70db below

Tape 75db below

Tape 75db below
Aux. 75db below

Aux. 75db below

FM

Usable Sensitivity (IHF)
300 ohms 1.8uV
50db quieting sensitivity
Signal

Capture Radio (IHF) 1.5db

Full Limiting (1db)
Image Rejection 53db

Alternate Channel Rejection

Alternate Channel Rejection
(IHF)

(IHF)

IF Rejection @98MHz 50db
F0 + 1/2 IF

at 98MHz

at 98MHz
AM Suppression 35db

Total Harmonic Distortion
(THD)

Stereo Separation
50Hz/10KHz 25db

FM Muting Threshold

AM

Sensitivity 20dbS/N
30%
Image Rejection
Selectivity ±10KHz,
AGC Figure

AGC Figure
of merit

of merit

out

Out

out

TO

NOISE RATIO

1.4v

10,000 ohms

5,000

input

input
250mv input

250mv input
250mv input

250mv input

TUNER

to

Noise Ratio 100% mod. 67db

Rejection

Rejection

FM Mono
FM Stereo

1KHz 35db

3uv

1.4uV

55db

55db

80db F0 + 1/2 IF

80db

.5%
.5%

5uV

TUNER

mod., 400Hz,

1.4MHz

1.4MHz

1.4MHz

1.4MHz

1.4MHz

200uV/m
60db
28db

43db

43db

ohms

10mv

10mv

GTE Sylvania presents
answer form
you

are

WHO

IS

to

give

protected.

PROTECTED?

The original retail purchaser.

its

you a

warranty

to you in

clear understanding

We

suggest
purchaser mail the warranty registration card
to facilitate service should

WHAT

IS

The receiver

from date

PROTECTED AND FOR HOW

and its

of

purchase.

parts

it be

are

required.

covered

LONG?

for two (2)

HOW ARE YOU PROTECTED?

The Sylvania dealer from whom
receiver,

repair

within

or
the

or an

authorized Sylvania Service Contractor, will

replace

warranty

any

part which fails under normal

period.
You must deliver your receiver
or

an

authorized, Service Contractor's place

service...and pick

it up

from

you

to

your Sylvania dealer

him

when service

performed.

THIS

We

SPECIFICATIONS

Entertainment

Products

GTE

WARRANTY

Receivers

question-and-

of

just

how

the

original retail

to

GTE Sylvania

years

purchased your

use

of

business

IS

THE GTE

recommend

has

for

been

SYLVANIA

Sylvania

SUBJECT TO CHANGE

WITHOUT NOTICE

Group,

700

Ellicott

SYLVANIA

WHO PAYS THE

For two(2) years after
Dealer from whom

LABOR

the

you

CHARGE?

date

of

purchase,

the

purchased your receiver,

Sylvania

or an
authorized Sylvania Service Contractor, will honor this
warranty without

the

two (2)

any

labor

year warranty

or

service charges. After

period,

you pay for

labor

or service charges.

ARE

REPLACEMENT PARTS PROTECTED?

Yes,

replacement parts

original warranty

WHAT

IF

YOU MOVE?

The Sylvania dealer
Contractor located
will honor this warranty
iod.

Service will

slip

to the

you move since

be

dealer

he

are

protected

period.

or an

in the

authorized Sylvania Service

area

for the

expedited

or

service contractor

will

if

not,

initially, have

for the

to

balance

which
of the

balance

you

of the

move

warranty per-

you will present your sales

in the

area

any

to

which

record

of

your purchase.

WARRANTY

Replacement

Street,

Parts

Batavia,

INCORPORATED

New

York

14020

Printed

in USA.

05-36099-1