Realistic 12-1960 User manual

r '
I
I
:~~
S;0 -# 0IDS:7 75
~EALISt7C*
.. ~
,l
',: 1>
: ·r ~
. ~
*Trademarks of Tandy Corporation

FEATURES
Your Beallstlc"80 +80 Watt Stereo
Power Amplifier is designed to match
your automobile's existing stereo radio
or tape player system. Using a DC-to-
DC switching power supply and high-
and low-level noise-isolated input, the
amplifier can
produce crystal clear
sound at all frequencies with minimum
distortion. '
Other features include:
•Automatic On/Off -automatically
turns the amplifier on or off
whenever you turn your radio or
tape player system on or.off.
•Noise-Isolated Line-Level RCA
Type Input Jacks -can accept
either high or low-level
hookup
from standard input jacks. This
enablesthe amplifierto match your
radio or tape player for the best
high-fidelity performance.
•Input Level Control -allows you
to adjustthe input level to match
tile output level of your audio
system. Adjusts the input for the
line-level or the speaker input.
' - .(
' 2
COPYRIGHT 1988, INTERTAN LTD.

CONTENTS
Included withYourAmplifier 4
Installation ,., ", , ", 5
Choosing the Mounting Location...................................................................... 5
Wiring Connections ,.., , 6
Connecting Power and Speakers to the Amplifier 6
Connectinq the Amplifier to Your Existing Auto-Sound System 8
Connecting aFour-Speaker System Using One Amplifier 9
Connecting aFour-Speaker System Using Two Amplifiers 10
Installing the Proper Fuses 11
Testing the Amplifier '; 11
Mounting the Amplifier................................................................................. 12,13
Mounting Two Amplifiers 14
Operation , , " ;"." '. .' ,..,,,,,,,".,,.,.., " 15
Turning On the Amplifier 15
Using the Input Level Control 15
Specifications., ,16
Schematic Diagram , 41
3

INCLUDED WITH YOUR AMPLIFIER
Your amplifiercomes with the following
itemsthat are necessaryfor connecting
and mounting. Besureto unpackthese
items before you dispose of the pack-
ing materials.
Mounting Brackets and Hardware
4
Left-Bracket 1
Machine Screws 4
Flat Washer 4
Flat Washer 4
@
Right-Bracket. 1
Spring Washer 4
o
Sheet-Metal Screw 4
Spring Washer 4
o
Use these items to mount the amplifier
below the dash of your vehicle. See
"Mounting the Amplifier".

INSTALLATION
Note: You can connect this amplifier in
many different ways. You can even use
itwith balanced transformerless (BTL)
circuitry. However, improper connec-
tions can damage your amplifier
and/orother components in your auto-
sound system.If,aftercompletelyread-
ing this manual, you do not feel confi-
dent about installing your amplifier and
have questions such as...
• Does my vehicle have a 12-volt
negative-ground electrical system?
• Which wire is the power wire?
• How do Iconnect a wire to the fuse
box?
...we strongly urge you to have your
amplifier installed by a professional
auto-sound installer.
CHOOSING THE MOUNTING
LOCATION
Wesuggestthat you connect thewiring
and confirm that the amplifier operates
properly with your system before you
actually mount it in your vehicle.
However,
you should choose the
mounting location first. Then,when the
unit is connected and working proper-
ly, you can mount it without rerouting
the wires.
Choose amounting location
below the
dash that:
• Is as near as possible to your
vehicle's radio, tape player, or other
main auto-sound component
• Does not interfere with operation of
the vehicle
• Is not directly in front of a heating
vent
• Allows for drilling mounting holes,
without damaging other vehicle
components
•
Allows enough leg room for
passengers
• Allows convenient and safe routing
of wires
Front Dash
Amplifier
Then,connect thewiring asfollows with
the amplifier as close as possible to the
chosen location.
5

6
WIRING CONNECTIONS
Caution: If the wiring harness (for
power and speakers) on your older ex-
isting radio/tape player is not com-
patible with your new Realistic
amplifier's wiring harness, we suggest
that you modify the existing wiring
using adapters available at your local
Tandy store. Or,
you can have a
qualified technician modify the older .
wiring for you. Modifying your power
amplifier voids its warranty.
Connecting Power and
Speakers to the Amplifier
1. Before you make any connections,
disconnect the positive
(+) wire
from your vehicle's battery. ·This
reduces the possibility of damage to
your system during installation.
Note:You must resetthe clock, digi-
taltuner memories for the radio, and
any other timer/memory devices
when you reconnect the battery wire
after wiring is complete.
2.
Connect the amplifier's black
(ground) wire to a nearby part of the
vehicle's metal frame.
Note: . Many parts of modern
vehicles are made of plastic or other
materials that do not conduct
electricity. You must connect the
black wire to a metal part that is not
insulatedfrom the vehicle's frame by
one of these non-conducting parts.
3. Connect the speaker wiring har-
ness(es) (not included) to the
speakers in your vehicle as shown
on Page 7.
Caution: Ifyou useexisting speaker
wiring or if you run new wires, be
surethat chassis ground is not used
for any speaker connection. There
must be aseparate insulated wire for
each speaker connection
(+ and -).
4. Plug the speaker's wiring harness
into the amplifier.
5. Connect the thin red wire with in-line
fuse holder to ACCESSORY power
+12 volts which switches on and off
with the ignition key.
6. Connect the larger red (power) wire
with an in-line fuse holder directly to
the car battery +12 volts source.

Radio/Tape Player
White Brown
Remote On/Off
Orange 0
Red
Black
To ACC .+12V
To Battery
·t 12V
DC
Ground
LSpeaker R
4-ohm
Speaker Tips
• Your speakers should be capable of .
handling 160 watts per pair. Tandy
auto-sound speakers are normally
sold and rated by pairs.
• The amplifier is designed for best
performance using4-ohm speakers.
Using speakers with less than
4-ohm impedances can damage the
amplifier.
Connecting Remote On/Off
• Depending on whether or not your
veh\c\e's radio or tape p\aver has a
switched power lead, do either a or
b:
a. If the radio or tape player has a
switched power lead (for the auto
antenna and such), connect the
single orange wire that terrninates in
a male quick disconnect plug to the
switched power lead. With this con-
nection, the amplifier turns on and
off automatically with the radio or
tape player.
b. If the radio or tape player does not
have a switched power lead, con-
nect the amplifier's orange lead to a
power source of +12 volts that is
switched on/ott by the ignition key
(such as .the ACC terminal found in
most fuse boxes).
7

Connecting the Amplifier to Your Existing Auto-Sound System
Radio/Tape Player
8
If the existing auto-sound com-
ponent (radio or tape player) has
RCA-type line output jacks:
1. Connect the radio/tape player's line
outputs to the amplifier LINE INPUT
jacks using shielded cables with
RCA-type plugs. (Connect left to left
and right to right.)
2. Disconnect the square, in-line con-
nectors inthe amplifier's input wiring
harness.
3. Insert the amplifier's input wiring
plug into the
mat~hing jack on the
existing radio/tapeplayer (or into the
matchingjackthat you or a qualified
technician added
to the existing
component).
If the existing aLito-sound com-
ponent (radio or tape player) does
not haveRCA-type line outputjacks:
1. Be sure that the square, in-line con-
nectors in the amplifier input wiring
harness are securely connected.
2. Insert the amplifier's input wiring plug
into the matching jack on the exist-
ing radio/tape player (or .lnto the ...
matching jackthat you or a qualified
technician added to the existing
component).

Connecting A Four-Speaker System Using One Amplifier
White Brown
Rear
Speaker
4-ohm
Ifthe source radio/tape player has both
high and low impedance output, you
canhavetwo pairsofspeakers.Usethe
front speaker output of the radio/tape
player to drive the front pair of
speakers,and, using the RCAhigh im-
pedance output, connect the
amplifier's HIGH impedance input to
drive the powertut, 4-ohm rear
speakers.
Radio/Tape Player
= CD
To Battery
+12V DC
Ground
9

Connecting AFour-Speaker System Using Two Amplifiers
Radio/Tape Player
Ifyou want to havefour powerful, 4-ohm
speakers in your vehicle, you can use
two amplifiers - one for the front
speakers and one for the rear speakers.
Both amplifiers can be driven by the
HIGH impedance output of the
radio/tape player, using two Phone Plug
V-Adapters (Cat. No. 42-2438) con-
nected to theleft andrightinputof each
amplifier respectively.
10

INSTALLING THE PROPER
FUSES
Fuse Holder
Ifthe fuse for your existing auto-sound
unit is not rated at 3 amps, replace the
fuse inthe amplifier's3-amp in-linefuse
with a fuse that matches the rating of
the existing unit's fuse.
TESTING THE AMPLIFIER
Before mounting the amplifier in the
location you chose earlier, we suggest
thatyou reconnect the vehicle battery's
positive(+) wire and test your entire
auto-sound system. See "Operation .".
11

12
MOUNTING THE AMPLIFIER
Attach the amplifier as follows in the
location you chose prior to connecting
the wiring. You can unplug the wiring
harnesses to make mounting more
convenient.
1. Attach the left and right mounting
brackets to the sides of the amplifier
as shown.
2. Using the brackets as a guide, mark
the locationsfor the mounting holes.
3. Drill 5mm holes in the marked loca-
tions, using care not to damage any-
thing on the opposite side of the
mounting surface.
4. Removethe mounting brackets from
the amplifier and attach them to the
mounting surface using the supplied
sheet-metal·screws.
5. Attach the amplifier to the brackets
and plug in the wiring harnesses.

13

MOUNTING TWO AMPLIFIERS
Use theillustration belowasa gUide for installing two amplifiers.
14

OPERATION
TURNING ON THE
AMPLIFIER
Once you connect the remote control
wire coming from the amplifier to the
auto antenna wire, from radio or tape
player, the amplifierturns on automati-
cally whenever you turn on
your radio
or tape player. Otherwise, the amplifier
turns on with your ignition. The power
indicator lights when the amplifier is
operating.
USING THE INPUT LEVELJ
CONTROL
The INPUT LEVELcontrol allowsyou to
adjust the fevel of the audio signal that
enters the amplifier. To adjustthis con-
trol
for optimum performance, follow
these steps:
1. Adjust the INPUT LEVEL control on
your power amplifier fully
counterclockwise.
2. Turn on your stereo system and turn
up the volume about one-third of its
full range.
3. Rotate
the INPUT LEVEL control
clockwise until you can hear the
program.
4. Tum up the volume on your stereo
until the program begins
to distort.
Then, immediately turn the volume
down to the point at which the dis-
tortion began.
5. Rotate the INPUT LEVELcontrol until
the volume is at the maximum level
you want
your system to produce.
6. Rotate
your stereo's volume control
to reduce the volume to a confort-
able listening fevel.
15

SPECIFICATIONS
Maximum Output Power 80 watts per channel
(with 4-ohm speakers connected).
60 watts per channel (at 1% distortion
with 4-ohm speakers connected)
Power Band Width 20-30,000 Hz,
(at -3dS, 50 watts output)
Input Level
High Impedance 130mV
Low Impedance 4.0V
SIN Ratio gOdS (at 50 watts, 1kHz, A-weighted)
Load Impedance 4-ohm per speaker terminal
Separation 60dB
Current Drain 25A Maximum
Power Supply Vpltage
DC, 14.4V Negative Ground
Dimensions 38 x220 x190mm
Weight 1.8 Kg
16

INTR0DUCTI0N
'Votre amplificateur de puissance stereo deux fois 80 watts est concu pour completer avantaqeu-
sement l'installation stereo de votre vehicule. Grace a une alimentation CC a CC automatique et
a une entree antibruit a haut et abas niveau ,l'arnplificateur peut produire un son d'une purcte
cristalline a toutes les fn3quences, avec une distorsion minimale.
CARACTERISTIQUES
•Mise sous/hors tension automatique. Le simple fait de mettre sous/hors tension votre auto-
radio ou lecteur de cassette met automatiquement en/hors fonction l'amplificateur de puissance.
•Prises d'entree'de type CINCH, niveau ligne, antibruit. Permettent la connexion a haut ou
bas niveau
avec des prises d'entree standard. Ceci petmet al'amplificateur de tirer le meilleur
rendement de votre installation.
• Reglage du niveau d'entree, Vous permet d'ajuster Ie niveau d'entree afin de l'adapter au ni-
veau de sortie de votre installation. Ajuste I'entrce au niveau ligne ou haut-parleur.
TABLE DES MATIERES
Fournitures livrees d'origine avec votre amplificateur ........................ .. 18
Montage ' , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Choix de
l'emplacement ~ '. . . . .. 19
Branchement " . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 20
Connexion de l'alimentation et des haut-parleurs al'amplificateur 20
Connexion de l'amplificateur al'installation existante '. .. 22
Branchement d'une installation a quatre haut-parleurs avec un seul amplificateur 23
Branchement d'une installation a quatre haut-parleurs avec deux amplificateurs " . 24,
Mise en place des fusibies . . . . . . . . . . . . . . . . . . . . . . . . .. 25
Test 25
Montage
d'un amplificateur ',' . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 26
Montage de deux arnplificateurs ' . . . . . . . . . . . . 27
Fonctionnement ....................................................... 28
Mise en
marche de l'amplificateur '. .. 28
Utilisation du n2gIage du niveau
d'entree '. .. 28
Donnees techniques . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 28
Schema 41
17

r
FOURNITURES LIVREES D'ORIGINE
AVEC VOTRE AMPLIFICATEUR
Votre amplificateur est livre avec les composants suivants.necessaires au montage et au branche-
ment. Veillez adisposer de
tout ce materiel avant de jeter les emballages.
Supports de montage et accessoires
Support gauche. ................ .. 1
Vis parker . . . . . . . . . . . . . . . . . . . . . . . 4
Rondelles plates 4
@
Rondelles plates 4
@
18
Support droit . . . . . . . . . . . . . . . . . . . .. 1
Rondelles aressort 4
Vis guidees ...................... 4
Rondelles aressort 4
o
Utilisezces composants pour monter l'ampli-
ficateur sous Ietableau de bord de votre veh i-
cule . Referez -vous au paragraphe «Montage
de l'amplificateur» .

MONTAGE
Remarque:
vous
pouvez
connecter
cet am-
plificateur de
differcntes
maniercs
.
Vous
pou-
vez me me l'utiliser avec des circuits sans trans-
formateur
equilibres.Toutefois, un
branche-
ment
incorrect risque d
'endommager
votre
amplificateur
ainsi
qued'autres
composants
de
votre installation .voiture. Si
apres
lecture
de
.ce
manuel,
vous
n'
etes
pas
certain de
pouvoir
mener
a
bien
Ie
montage
de cet
amplificateur
au
si
vous
demandez,
par
exemple.
• .Si
votre voit ure a
une
installation elec-
trique
de 12Vavec masse
negative
.
•
quel
est Ie cable d' alimentation
•
comment
s'
opere
Ie
raccordement
a
la
boite
a
fusibles,
nous
vous
conseillons de
confier ce travail
a
un techicien qualifie.
CHOIX
DE
L'EMPLACEMENT
Nous vous
suggerons
d'effectuer les con-
nexions et de
vous
assurer
que
l'amplificateur
fonctionne parfaitement avec votre installation
avant
de
proceder
ason
montage
dans
votre
vehiculc. La
premiere
chose
afaire toutefois
est de
determiner
un
emplacement
de
mon-
tage. Puis ,
une
fois
que
vous
avez
branchc
les
filset
que
vous
etes sur de
son
bon fonction-
nement
, vous pouvez Iemonterdefinitivemcnt
sans
qu'il soit besoin de retirer
tous
les filsen
place.
19
Choisissez un endroit
sous
Ietableau de
bard
,
qui:
• soit
aussi
pres que
possible
de votreauto-
radio,lecteur de cassette,... ;
• n'interfere
pas
sur Iebon fonctionnement du
vehicule
;
• ne soit
pas
directement
en face d
'une
bou-
che
d'aeration ;
• n'exige
pas
de forer des trous risquant d'en -
dommage
r
des
pieces du vehicule, .
• laisse un
espace
suffisant
pour
lesjambes du
passager
;
•
permette
un
branchement
aise des fils.
TABLEAU DE
BORD
AMPLIFICATEUR
Effectuez
ensuite
Ie
branchement
en
tenant
l'amplificateur aussi pres
que
possible de l'em-
placement
choisi
pour
son
installation.

BRANCHEMENT
Attention! Si les fils (d' alimentation et de con-
nexion aux haut-parleurs) de votre installation
existante ne sont pas adaptes a ceux de votre
nouvel amplificateur , nous vous suggerons
d'utiliser des adaptateurs disponibles dans vo-
tre magasin Tandy . Vous pouvez aussi de-
mander l'aide d'un technicien pour modifier
Ie cablaqe existant. Nous attirons votre atten-
tion sur Ie fait que toute modification de l'arn-
plificateur annule automatiquement sa garan-
tie .
Connexion de l'alimentation et
des haut-parleurs al'amplifi-
cateur
1. Avant d'effectuer la premiere connexion ,
veuillez debrancher Ie fil positif ( +) de la
batlerie du vehicule afin d'eviter d'endom-
mager votre installation durant Ie monta-
ge.
Remarque: Tout appareil (horloge,...) de
votre vehicule devra evidemment etre re-
gIe lorsque vous rebrancherez Iefilala bat-
terie.
2. Branchez Ie fil noir (masse) de l'amplifica-
teur sur une piece proche du chassis du ve-
hicule.
Remarque: Un certain nombre de com -
posants dans Ies vehicules actuels sont faits
de plastique ou d'un autre materiau non-
conducteur electrique .Veuillez connecter
Iefilnoir a une piece mctallique qui ne soit
pas isolee du chassis par l 'un de ces com-
posants non-conducteurs.
3. Si ce n'est deja fait ,effectuez les con-
nexions aux haut -parleurs.
Attention! Que vous utilisiez Ie cablaqe
existant ou que vous connectiez de nou-
veaux fils avos haut-parleurs ,assurez-vous
de ne pas employer la masse du chassis
pour Ie branchement. Veuillez utilisez un
filisole separe pour chaque connexion de
haut-parleur (+ et -).
20
4. Branchez la tresse des filsde connexion des
haut -parleurs a l'arnplificateur.
5. Branchez Ie fin fil rouge avec porte-fusible
en ligne sur la borne d 'alimentation + 12V
ACC du demarreur ,ce qui permettra une
mise sous/hors tension de l'amplificateur
apartirde la de de contact du vehicule.
6. Branchez Ie large ftl rouge (alimentation)
avec porte- fusible en ligne directement sur
Ia batterie 12VCC .