Optimus Stereo Receiver STA 3500 User Manual

Cat. No. 31-3034  
Digital Synthesize  
AM/FM  
Stereo Receiver  
STA-3500  
VOLUME  
STA-3500 DIGITAL SYNTHESIZED AM/FM STEREO RECEIVER  
PHONO  
TUNER  
LD/DVD  
CD  
STAND BY  
POWER  
TAPE 2  
MONITOR  
TAPE 1  
VCR  
SUPER  
BASS  
MIN  
MAX  
MEMORY  
CLASS  
STATION  
TREBLE  
BALANCE  
BASS  
PHONES  
SPEAKERS  
A
B
FM MONO  
TUNING  
FM/AM  
OSR  
L
R
Owner’s Manual  
Please read before using this equipment.  
 
IMPORTANT SAFETY INSTRUCTIONS  
This receiver is made and tested to meet exacting  
safety standards. It meets both UL and FCC require-  
ments  
Careful attention is devoted to quality standards in the manufacture of your receiver, and safety is  
a major factor in its design. However, safety is also your responsibility.  
This section lists important information that will help you properly use and enjoy your receiver and  
accessories. Read all the included safety and operating instructions before using your receiver. Fol-  
low them closely, and retain them for future reference.  
WARNING: TO REDUCE THE RISK OF  
FIRE OR ELECTRIC SHOCK, DO NOT  
EXPOSE THIS APPLIANCE TO RAIN OR  
MOISTURE.  
Heed Warnings — Follow all warnings on the product and in the operating instructions.  
Cleaning — Unplug this product from the wall outlet before cleaning. Use only a damp cloth for  
cleaning. Do not use liquid or aerosol cleaners.  
Attachments — Do not use attachments/accessories not recommended by the product manufac-  
turer, as they might create a hazard.  
To prevent fire or shock hazard, do not expose this sys-  
tem to rain or moisture.  
Water and Moisture — Do not use this product near water (for example, near a bathtub, washbowl,  
kitchen sink, or laundry tub; in a wet basement; or near a swimming pool).  
Accessories — Do not place this product on an unstable cart, stand, tripod, bracket, or table. The  
product may fall, causing serious injury to a child or adult, and serious damage to the product. Use  
only with a cart, stand, tripod, bracket, or table recommended by the manufacturer or sold with the  
product. Follow the manufacturer's instructions for mounting, and use a recommended mounting  
accessory.  
CAUTION  
RISK OF ELECTRIC SHOCK.  
!
DO NOT OPEN.  
CAUTION  
: TO REDUCE THE RISK OF  
Carts — Move the product on a cart carefully. Quick stops, excessive force, and  
ELECTRIC SHOCK, DO NOT REMOVE  
COVER OR BACK. NO USER-SERVICE-  
ABLE PARTS INSIDE. REFER SERVICING  
TO QUALIFIED PERSONNEL.  
uneven surfaces may cause the product/cart to overturn.  
Ventilation — Slots and openings in the cabinet provide ventilation, ensure reli-  
able operation, and protect from overheating. Do not block or cover these open-  
ings, and do not place the product on a bed, sofa, rug, or other similar surface. Do  
not place the product in a built-in bookcase or rack unless it provides proper ven-  
tilation as specified by the manufacturer.  
Power Sources — Operate this product using only the power source indicated on its marking label.  
If you are not sure of your home's power type, consult your product dealer or local power company.  
This symbol is intended to alert you to the  
presence of uninsulated dangerous voltage  
within the system’s enclosure that might be of  
sufficient magnitude to constitute a risk of  
electric shock. Do not open the system’s  
case.  
Polarization — This product is equipped with a polarized AC line plug (a plug having one blade  
wider than the other). This plug will fit in the power outlet only one way. This is a safety feature. If  
you cannot insert the plug fully into the outlet, try reversing the plug. If the plug still doesn't fit, con-  
tact your electrician to replace your obsolete outlet. Do not defeat the safety purpose of the polar-  
ized plug. If you need an extension, use a polarized cord.  
Power-Cord Protection — Route power-supply cords so they are not likely to be walked on or  
pinched by items placed on or against them, paying particular attention to cords at plugs, conve-  
nience receptacles, and the point where they exit from the product.  
This symbol is intended to inform you that im-  
portant operating and maintenance instruc-  
!
Lightning — For added protection for this product during a lightning storm, or when it is left unat-  
tended and unused for long periods of time, unplug it from the wall outlet and disconnect the anten-  
na or cable system. This will prevent damage to the product due to lightning and power-line surges.  
tions are included in the literature acc-  
ompanying this system.  
Overloading — Do not overload wall outlets, extension cords, or integral convenience receptacles,  
as this can result in a risk of fire or electric shock.  
CAUTION  
Objects and Liquids — Never push objects of any kind into this product through openings, as they  
may touch dangerous voltage points or short out parts that could result in a fire or electric shock.  
Never spill liquid of any kind on the product.  
Power LinesLocate an outdoor antenna away from  
power lines.  
Nonuse PeriodsUnplug the receiver’s power cord  
when you will not use it for extended periods.  
Servicing — Do not attempt to service this product yourself, as opening or removing covers may  
expose you to dangerous voltage or other hazards. Refer all servicing to qualified service person-  
nel.  
Outdoor Antenna GroundingIf an outside antenna  
or cable system is connected to the receiver, ground  
the antenna or cable system so as to provide some  
protection against voltage surges and built-up static  
charges. Article 810 of the National Electrical Code,  
ANSI/NFPA 80, provides information about proper  
grounding of the mast and supporting structure,  
grounding of the lead-in wire to an antenna discharge  
unit, size of grounding conductors, location of antenna-  
discharge unit, connection to grounding electrodes,  
and requirements for the grounding electrode. See the  
example below.  
Damage Requiring Service — Unplug this product from the wall outlet and refer servicing to qual-  
ified service personnel under the following conditions:  
When the power-supply cord or plug is damaged.  
If liquid has been spilled or objects have fallen into the product.  
If the product has been exposed to rain or water.  
If the product does not operate normally by following the operating instructions. Adjust only  
those controls that are covered by the operating instructions, as an improper adjustment of  
other controls may result in damage and will often require extensive work by a qualified techni-  
cian to restore the product to normal operation.  
If the product has been dropped or damaged in any way.  
When the product exhibits a distinct change in performance.  
Antenna  
Lead-In  
Wire  
Replacement Parts — When replacement parts are required, be sure the service technician uses  
replacement parts specified by the manufacturer or having the same characteristics as the original  
part. Unauthorized substitutions may result in fire, electric shock, or other hazards.  
Ground Clamp  
Safety Check — Upon completion of service or repairs to this product, ask the service technician  
to perform safety checks to determine that the product is in proper operating condition.  
Antenna  
Discharge Unit  
(NEC Section 810-20)  
Electric  
Service  
Wall or Ceiling Mount — The product should be mounted to a wall or ceiling only as recommended  
by the manufacturer.  
Grounding Conductors  
(NEC Section 810-21)  
Equipment  
Grounding Clamps  
Heat — The product should be situated away from heat sources such as radiators, heat registers,  
stoves, or other products (including amplifiers) that produce heat.  
Power Service Grounding  
Electrode System  
(NEC Article 250, Part H)  
NEC -- National Electrical Code  
 
3
Contents  
Preparing Your Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5  
Positioning Speakers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5  
Connecting Speakers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6  
Connecting Program Sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8  
Connecting the Antennas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9  
Using One Remote Control for More Than One Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11  
Installing the Remote Control’s Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11  
Using the AC Power Outlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12  
Connecting to AC Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12  
Basic Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13  
Tuning the Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14  
Using FM Mono . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15  
Balance Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15  
Muting the Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15  
Using Headphones . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15  
Cassette Deck Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15  
Using the Remote Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18  
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20  
Care and Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21  
The FCC Wants You to Know . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22  
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23  
Index to Features by Control Name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25  
 
4
Preparing Your Receiver  
Caution: Make all the necessary connections before you plug in or turn on the receiver.  
Where you place your speakers can make a noticeable difference in your sys-  
tem’s sound. The guidelines in this section will help you choose the best loca-  
tions. After you use your receiver for a while, you might want to try different  
locations for your speakers.  
Positioning Speakers  
a
L
R
Bass response depends largely on speaker location. For strong bass, place the  
speakers in the corners of the room. If you want even stronger bass, place the  
speakers directly on the floor. If the bass is too strong, move the speakers  
slightly away from the corners of the room, or raise them 6 to 18 inches off the  
floor. You can buy speaker stands at your local RadioShack store.  
Halfway Point  
Between Speake  
b
a=b  
The distance between the speakers should be about the same as the distance  
between the normal listening point and the point halfway between the speakers.  
If you place the speakers too close together, you reduce the stereo separation.  
If you place them too far apart, you reduce the bass effect and create a hole in  
the middle of the sound.  
Person in Listening Area  
Most speakers have a tweeter dispersion angle of about 60 degrees. Ideally,  
your listening position should be just inside the overlap area of the tweeter dis-  
persion. You can angle the speakers toward you for better stereo effect.  
 
5
Preparing Your Receiver  
Connecting Speakers  
Preparing the Speaker Wires  
Speaker wire consists of two conductors (individual wires) encased in insulation  
and is usually color-coded or marked with a ridge along one side so you can  
identify each conductor. Use these markings as a guide to help you properly  
connect the speakers to your receiver.  
Follow these guidelines when you select  
and connect speakers.  
• Only connect speakers that are rated  
at between 8 and 16 Ohms.  
Follow these steps to prepare the speaker wires.  
• Be sure you properly connect all  
speakers.  
Wire Strands  
• Do not connect two pairs of speakers  
to a single set of terminals (A or B) at  
the same time. When you use two  
pairs of speakers, connect one set to  
Speaker Wire  
Speakers A  
Speakers B  
.
and one set to  
• Realistic, Optimus, and other high-  
quality speakers have color-coded  
speaker terminals (red for positive  
polarity and black for negative polar-  
ity). Use these color-coded terminals  
as a guide to help you properly con-  
nect the speakers to the receiver.  
Wire Strands  
Conductor  
1. Cut the speaker wires to the necessary length.  
2. Separate the wires about 4 inches on each end.  
• Use 16-gauge (or larger) speaker wire  
for all speaker connections, and con-  
sider possible speaker locations  
before you decide how much speaker  
wire you need.  
3
3. Using a wire stripper, carefully strip about /4 inch of insulation from the  
end of each conductor.  
4. Twist the end of each conductor to secure any loose wire strands.  
 
6
Preparing Your Receiver  
Connecting the A and B Speakers  
Notes:  
Follow these steps to connect the right speaker to the receiver’s right A SPEAK-  
ERS terminals.  
• Be sure you connect the receiver’s  
right and left positive (+) and negative  
(–) terminals to the speaker’s corre-  
sponding right and left positive (+) and  
negative (–) terminals.  
1. Press the receiver’s A SPEAKERS R (+) red lever and insert the ridged or  
color-coded conductor’s end into the small hole. Pull back the lever to  
secure the conductor.  
• Fully insert the speaker wires to  
ensure a good connection. Leave  
extra wire at the back of the receiver  
so you do not disconnect the wires  
when you move the receiver.  
2. Press the receiver’s A SPEAKERS R () black lever and insert the other  
conductor’s end into the small hole. Pull back the lever to secure the con-  
ductor.  
Caution: To prevent a short circuit, twist  
the end of each conductor to be sure  
that stray speaker wire strands do not  
touch other speaker terminals or any  
other receiver terminals.  
3. Connect the ridged or color-coded conductor’s loose end to the right  
speaker’s positive (+) terminal.  
4. Connect the remaining loose conductor to the right speaker’s negative (–)  
terminal.  
Repeat Steps 1 through 4 to connect the left speaker to the receiver’s A SPEAK-  
ERS L terminals.  
Repeat this entire process to connect a second pair of speakers to the B  
SPEAKERS terminals.  
SPEAKERS  
R
L
A
B
A
B
R
L
Left  
B Speakers  
A Speakers  
Left  
 
7
Preparing Your Receiver  
You can connect up to five external program sources to your receiver.  
Connecting Program Sources  
GND  
IN  
REC  
PLAY  
REC  
PLAY  
IN  
IN  
L
L
OUT  
L
R
R
R
TAPE2  
MONITOR  
TAPE 1  
/VCR  
LD  
/DVD  
CD  
CONTROL  
PHONO  
LINE  
LINE  
REC  
REC  
PLAY  
REC  
REC  
PLAY  
OUT PUT  
OUT PUT  
L
L
L
L
R
R
PLAY  
PLAY  
R
R
INPUT OUTPUT  
INPUT OUTPUT  
CD  
Turntable  
Cassette Deck  
Cassette Deck  
LD/DVD Player  
CD Player  
Connecting a Turntable  
Connect a turntable with a magnetic cartridge only. Some older turntables use a  
ceramic-type cartridge that does not work with this system.  
Note: Use shielded audio cables with  
phono connectors for all audio connec-  
tions.  
Connect the turntable’s left and right cables to the receiver’s left and right  
PHONO  
GND  
jacks. Then connect the turntable’s ground wire to the receiver’s  
terminal.  
Connecting Cassette Deck(s)  
TAPE 1/VCR  
TAPE 2 MONITOR  
and the  
You can connect cassette decks to the  
Note: If you place the cassette deck  
directly above, below, or to the left of the  
receiver, the receiver could interfere with  
the cassette deck’s operation. If possi-  
ble, position the cassette deck to the  
right of the receiver or locate it away  
from the receiver.  
TAPE 1/VCR PLAY  
jacks. Connect the cassette deck’s output jacks to the  
or  
TAPE 2 MONITOR PLAY  
jacks, and connect the cassette deck’s input jacks to  
TAPE 1/VCR REC  
TAPE 2 MONITOR REC  
jacks.  
(audio) or  
Connecting a CD Player  
To connect a CD player to the receiver, connect the CD player’s left and right  
R CD IN  
L
output jacks to the receiver’s and  
jacks.  
Connecting Another Audio Source  
Connect the audio outputs of another audio source, such as the audio from a  
LD/DVD IN L  
R
laser disc player, TV, VCR, or CD player, to the  
and jacks.  
 
8
Preparing Your Receiver  
In many cities, the supplied indoor AM loop and FM antennas provide adequate  
reception.  
Connecting the Antennas  
Warning: To prevent injury, read and fol-  
low all cautions and warnings that  
accompany the outdoor antenna.  
AM Antennas  
Assemble the included antenna’s base by swinging the base in the direction of  
the arrow and inserting the antenna’s bottom tabs into the base’s slot. Then  
AM LOOP ANTENNA  
GND  
terminals.  
attach the antenna wires to the  
and  
Place the antenna on a flat surface and rotate it for the best AM reception.  
If the receiver is in a rack or on a shelf and there is no room for the AM loop  
antenna, use two screws (not supplied) to mount the base on the wall or  
another location as shown.  
Notes:  
• Keep the AM loop antenna connected even when you use another indoor  
antenna or an outdoor AM antenna.  
• Ensure the antenna does not touch the receiver or other metal objects.  
• Do not place the antenna near a CD player, a personal computer, or a TV  
set  
• If the wire between your AM loop antenna and receiver is too short, you  
can add extra wire, available at your local RadioShack store.  
AM Loop Antenna  
AM LOOP  
ANTENNA  
GND  
FM  
UNBAL  
GND  
75  
You can also use a RadioShack shortwave antenna kit (Cat. No. 278-  
758), which makes an excellent outdoor AM antenna.  
Connect the outdoor AM antenna wire to the receiver’s AM terminal, as shown.  
ANTENNA  
door AM Antenna  
AM LOOP  
FM  
ANTENNA  
GND  
UNBAL  
75  
GND  
FM Antennas  
FM UNBAL 75  
Connect the supplied FM antenna to the  
as shown.  
terminal and extend it  
FM Antenna  
FM  
UNBAL  
AM LOOP  
ANTENNA  
GND  
GND  
75  
ANTENNA  
For better FM reception, you can also use a rabbit-ear TV antenna (for indoor  
use only) or an outdoor VHF TV antenna. To connect the TV antenna to the  
receiver, you need a VHF/UHF/FM splitter (not included). RadioShack stores  
carry a full line of quality outdoor antennas and antenna connection accesso-  
ries.  
Note: For the best results, use 75-ohm  
coaxial cable to connect an outdoor  
antenna to the receiver.  
 
9
Preparing Your Receiver  
For the best radio reception, use an outdoor antenna. Follow these steps to  
connect an outdoor FM antenna to the receiver using 75cable.  
Note: If your antenna has 300twin-lead cable, consult your local RadioShack  
store for the correct adapter.  
FM UNBAL 75  
1. Disconnect the supplied FM antenna from the receiver’s  
terminal.  
Inner Insulation  
2. With a stripping tool, remove about 11/2 inches of the 75cable’s outer  
insulation to expose the cable’s shielding.  
3. Fold back the insulation from the inner insulation.  
Center Wir  
4. Remove about 1 inch of the inner insulation from around the center wire.  
Outer Insulation  
Shielding  
FM  
5. Pull the shielding to one side. Connect the center wire to the receiver’s  
Caution: The cable’s shielding should  
GND  
UNBAL 75  
terminal. Twist the shielding to secure any loose wire strands,  
only touch the  
terminal.  
GND  
and connect it to the  
terminal.  
FM Outdoor Antenna  
Shielded  
FM  
UNBAL  
GND  
AM LOOP  
ANTENNA  
GND  
Core  
75  
ANTENNA  
Note: Grounding is not necessary for reception, but we recommend it to avoid  
damage from lightning when you use an outdoor FM antenna and for better FM  
reception. Use a separate piece of thick polyvinyl insulated wire to connect the  
GND  
terminal to an earth ground such as a metal cold-water pipe.  
Warning: Never connect a wire to a gas pipe for grounding since sparks might  
ignite the gas.  
 
10  
Preparing Your Receiver  
If you also have an Optimus professional series CD player, VCR, or cassette  
Using One Remote Control  
for More than One Unit  
CONTROL IN  
deck with the OSR mark, you can connect its  
jack to the receiver  
so you can control all of your equipment with a single remote control. You can  
also use the other component’s remote control by pointing it at the receiver’s  
front panel.  
Note: When you plug the cable into a  
CONTROL IN  
component’s remote sensor does not  
function.  
component’s  
jack, that  
1. Connect each component to the receiver as shown in “Connecting Pro-  
gram Sources.”  
CONTROL  
Note: You must connect the audio cables between the receiver and the  
other audio accessory to use your receiver’s remote control to control the  
accessory.  
IN  
OUT  
OUT  
CONTROL  
2. Connect the cable supplied with the CD player, VCR, or cassette deck  
CONTROL OUT  
between the receiver’s  
CONTROL IN  
jack and the other component’s  
jack.  
Other Component  
with OSR Mark  
Receiver  
3. When you want to control more than one other component using the  
CONTROL OUT CONTROL  
receiver’s remote control, daisy-chain the  
IN  
and  
Remote  
Control  
To the CONTROL IN ja  
of Another Componen  
Having the OSR Mark  
connections as shown.  
The remote control uses two AA batteries (not included). For the longest battery  
life, we recommend alkaline batteries (such as RadioShack Cat. No. 23-557).  
Installing the  
Remote Control’s Batteries  
1. Press and remove the battery compartment cover.  
2. Place two fresh AA batteries in the compartment as indicated by the  
polarity symbols (+ and –) marked in the compartment.  
Cautions:  
• Use only fresh batteries of the recom-  
mended size and type.  
3. Replace the battery compartment cover.  
• Always remove old or weak batteries.  
Batteries can leak chemicals that can  
damage electronic circuits.  
Note: If the remote’s range is reduced,  
replace the batteries immediately.  
 
11  
Preparing Your Receiver  
Your receiver has an AC power outlet that you can use to power an electronic  
device, such as a turntable, cassette deck, VCR, and so on. This switched out-  
let turns on and off with the receiver and provides a maximum of 100 Watts  
(0.8A max).  
Using the AC Power Outlet  
Caution: Do not connect appliances with  
high power consumption, such as a  
heater, iron, monitor, or TV, to this AC  
outlet. Doing so can cause a risk of over-  
heating and fire, and could damage the  
receiver.  
Before you plug in the receiver’s power cord, double check all other connec-  
tions.  
Connecting to AC Power  
To power the receiver, plug the supplied power cord into a standard AC outlet.  
The power cord’s plug is polarized and fits only one way.  
Warning: To prevent electric shock, do  
not use this polarized plug with an exten-  
sion cord, receptacle, or other outlet  
unless you can fully insert the blades to  
prevent blade exposure.  
STAND BY  
The  
indicator lights whenever you supply power to the receiver and  
turn it off.  
CAUTION:  
DO NOT CONNECT  
TV SET OR MONITOR.  
SPEAKERS  
R
L
AC 120V 60HZ  
A
B
A
B
SWITCHED  
100W MAX  
0.8A MAX  
R
L
AC OUTLET  
 
12  
Basic Operation  
Note: The controls on the remote control work the same as the buttons on the  
receiver’s front panel.  
Warning: To prevent possible hearing  
loss, turn VOLUME to MIN before you turn  
on the receiver or change the program  
sources. After you turn on the receiver or  
change the program source, adjust VOL-  
UME to a comfortable listening level.  
Follow these steps to use the receiver.  
1. Press POWER to turn on the receiver’s power. It takes about 5 seconds to  
begin hearing sound.  
2. Select the speakers.  
A
B SPEAKERS  
If you connected speakers only to the (or )  
terminals,  
press SPEAKERS A (or B) to turn on only those speakers. Do not press  
both SPAKERS A and B. Doing so disconnects all speakers.  
A
B SPEAKERS  
terminals,  
If you connected speakers to both the and  
do any of the following:  
Press in SPEAKERS A or B to turn on either pair of speakers for a two-  
speaker stereo effect.  
Note: If you want to find out what a par-  
ticular button or control is used for, see  
Page 18(for the remote control) or Page  
25(for the front panel) to find the page  
where the button or control is described.  
Press in SPEAKERS A and B to turn on both pairs of speakers for a  
four-speaker stereo effect.  
Press SPEAKERS A and B to the out position to silence all speakers  
and listen privately with headphones (see “Using Headphones” on  
Page 15).  
3. Select a program source.  
To tune to a radio station, see “Tuning the Radio” on Page 15.  
TAPE 2 MONI-  
To listen to signals from the component connected to  
Note: If you select a source while TAPE 2  
MONITOR is engaged, TAPE 2flashes  
five times on the display, reminding you  
to disengage the TAPE 2 MONITOR func-  
tion  
TOR press TAPE 2 MONITOR so TAPE 2appears on the display.  
,
TAPE 2 MONITOR  
To listen to a source other than one connected to  
,
be sure TAPE 2does not show on the display. If necessary, press TAPE  
2 MONITOR so TAPE 2disappears.  
Then press TAPE 1/VCR, LD/DVD, CD, TUNER, or PHONO, or repeatedly  
press FUNCTION on the remote control, to display the desired program  
source.  
4. Adjust VOLUME clockwise to increase the volume and counterclockwise  
to decrease it. Or, you can use VOLUME –/+ on the remote control.  
5. Use the BASS and TREBLE controls to adjust the program’s tonal quality.  
To enhance the bass level, press SUPER BASS.  
6. Adjust BALANCE to suit your listening preferences. See “Balance Control”  
on Page 14.  
7. Press POWER to turn off the receiver.  
 
13  
Basic Operation  
Tuning the Radio  
Your receiver offers three types of electronic tuningmanual, automatic, and  
memory.  
Note: For weak signals, we recommend  
manual tuning.  
Manual and Automatic Tuning  
Follow these steps to manually or automatically tune to the stations.  
TUNER  
FM/AM  
to select the desired band.  
1. Press  
. Then press  
The receiver tunes to and displays the frequency last selected in that  
band.  
TUNING  
2. Press  
or once to move to the next higher or lower frequency.  
TUNING  
Or, press and hold down  
or to rapidly change frequencies.  
Release the button to stop.  
TUNING  
To search for the next higher or lower FM station, release  
or  
as soon as the frequency starts to change. The receiver searches up or  
down the FM band until it finds a strong station.  
Notes:  
STEREOappears on the display when FM broadcasts are received in  
stereo and the receiver is not set to FM mono.TUNEDappears on the  
display when you tune to a strong station. To find a weak FM station,  
FM MONO  
press  
until MONOappears. See “Using FM Mono” on  
Page 15.  
TUNING  
TUNING  
at the top of the frequency range or  
If you press  
at the bottom of the frequency range, the display returns to the other  
end of the range.  
Memory Tuning  
Memory tuning lets you instantly tune to a stored frequency. You can store up to  
30 AM or FM frequencies (10 frequencies in each of three classes) in the  
receiver’s memory.  
Follow these steps to store a station.  
TUNER  
FM/AM  
to select the desired band.  
1. Press  
. Then press  
2. Using either manual or automatic tuning, select the frequency you want to  
store.  
Notes:  
• If you store a frequency in a memory  
that already contains a frequency, you  
replace the previous frequency.  
FM MONO  
If desired, press  
for FM monaural sound (see “Using FM Mono”  
on Page 16). This setting is stored in the memory.  
• If your receiver is disconnected from  
AC power for several days, it loses all  
the stored frequencies.  
MEMORY  
3. Press  
. MEMORYappears for 5 seconds.  
CLASS  
4. While MEMORYis on the display, press  
want (1-3) appears on the display. Then press  
station number you want appears on the display.  
until the class number you  
STATION  
or until the  
Repeat these steps to store additional frequencies. Do not enter a frequency  
while the display flashes.  
CLASS  
To tune to a stored frequency, press  
so the desired class number  
STATION  
/
appears on the display, then press  
to select the station.  
 
14  
Basic Operation  
Using FM Mono  
FM MONO  
To receive FM stations in stereo, press  
until MONOdisappears from  
the display. STEREOappears on the display when you receive an FM broadcast  
in stereo.  
FM MONO  
You can improve the reception of weak FM stations by pressing  
until  
MONOappears. This reduces noise while you listen to a weak FM station, but  
you get monaural instead of stereo sound.  
BALANCE  
The  
control lets you adjust the sound balance between the left and  
Balance Control  
right speakers. If you properly position the speakers and your listening area is  
centered between them, the center control setting is usually best (see “Position-  
ing Speakers” on Page 5).  
BALANCE  
For an unusual speaker placement, adjust  
as follows:  
to select the FM band.  
until MONOappears. The sound is monaural instead of  
TUNER  
FM/AM  
1. Select  
. Then press  
FM MONO  
2. Press  
stereo, so each speaker delivers the same output.  
BALANCE  
3. Turn  
until you hear the sound coming equally from each  
speaker when you are in the listening area.  
FM MONO  
4. Press  
until MONOdisappears from the display.  
MUTING  
To temporarily mute the sound, press  
on the remote control. MUTING  
again to restore the audio level.  
Muting the Receiver  
Using Headphones  
MUTING  
appears. Press  
1
To listen with headphones (not supplied), insert the headphones’ /4-inch plug  
PHONES  
A
into the receiver’s front panel  
B SPEAKERS  
jack. To silence the speakers, set and  
to the out position.  
Listening Safely  
To protect your hearing, note the following when using headphones.  
• Set the volume to its lowest setting before you begin listening. After you  
begin listening, adjust volume to a comfortable level.  
• Do not listen at extremely high volume levels. Extended high-  
volume listening can lead to permanent hearing loss.  
• Once you set the volume, do not increase it. Over time, your ears adapt to  
the volume level, so a volume level that does not cause discomfort might  
still damage your hearing.  
Cassette Deck Features  
TAPE 1/  
You can connect two cassette decks to the receiver. Selecting either  
VCR  
TAPE 2 MONITOR  
lets you hear the playback from the cassette deck you  
or  
TAPE 1/VCR TAPE 2 MONITOR  
)
connected to the receiver’s corresponding (  
jacks.  
,
 
15  
Basic Operation  
Using the TAPE 1/VCR Button  
Press TAPE 1/VCR. TAPE 1appears on the display. You hear the playback  
from the cassette deck or VCR you connected to the receiver’s TAPE 1/VCR  
jacks.  
Using the TAPE 2 MONITOR Button  
Press TAPE 2 MONITOR. TAPE 2appears on the display along with the last  
program source you selected. You can hear playback or monitor a recording  
from the cassette deck you connected to the receiver’s TAPE 2 MONITOR jacks.  
The TAPE 2 REC jacks continue to output the previously selected source when  
you press TAPE 2 MONITOR.  
To return to the previous source, press TAPE 2 MONITOR again so TAPE 2dis-  
appears.  
Notes:  
• If you press TAPE 2 MONITOR when that cassette deck is neither playing  
nor recording, the receiver mutes the current audio source. To hear the  
audio source, press TAPE 2 MONITOR until TAPE 2disappears from the  
display.  
• Do not press TAPE 2 MONITOR while you are recording on the deck con-  
nected to TAPE 2 REC. If you do, the recording is interrupted for about 1  
second.  
Recording a Program Source  
The receiver sends the audio program source you select—TAPE 1/VCR, TAPE 2  
MONITOR, LD/DVD, CD, TUNER, PHONOto the TAPE 1/VCR REC and TAPE 2  
MONITOR REC jacks. The VOLUME control does not affect the level of the signal  
going to the tape decks.  
When you record a program source using the Tape 2 cassette deck, you hear  
the program source’s signal immediately after you record it onto the tape, if the  
cassette deck you connected has a three-head monitor function. (Be sure to  
read the owner’s manual for your cassette deck.)  
Simultaneous Recording and Playback  
You can record any non-tape program source on the Tape 1 cassette deck while  
you listen to a cassette tape using TAPE 2 MONITOR.  
Press the button for the desired program source (LD/DVD, CD, TUNER, PHONO),  
then press the record button on the cassette deck connected to TAPE 1/VCR.  
Tape 1 records the selected program source. Press TAPE 2 MONITOR, then start  
playback on the cassette deck connected to TAPE 2 MONITOR. TAPE 2  
appears and you hear Tape 2 play back while Tape 1 continues to record the  
program source you selected.  
 
16  
Basic Operation  
Dubbing a Cassette Tape  
You can copy, or dub, a cassette tape from one cassette deck to another.  
You can use either deck as the playback or recording deck. However, if you  
want to monitor the cassette deck during dubbing, use the deck connected to  
the TAPE 1/VCR jacks as the source, and the deck you connected to the TAPE 2  
MONITOR jacks as the recording deck. Then press TAPE 2 MONITOR until TAPE  
2appears on the display. See “Using the TAPE 2 MONITOR Button” on the pre-  
vious page.  
 
17  
Using the Remote Control  
The remote control works up to a distance of about 23 feet, and within a 30-  
degree angle on either side of the receiver. Point the control at the receiver’s  
front panel and press the desired button(s).  
Many buttons on the remote control work the same as buttons on the receiver’s  
front panel. Use these buttons exactly as you would use the corresponding but-  
tons on the receiver.  
Receiver/Amplifier Section  
FUNC  
Selects a program source (Tape 1/VCR, LD/DVD, CD, tuner,  
FUNC  
or phono). Repeatedly press  
until the display shows  
CD  
BEST  
your desired program source. See Page 13.  
ASMS  
DISC  
– VOLUME +  
Adjusts the system’s volume. See Page 13.  
DECK1  
DECK2  
TAPE  
RECEIVER POWER  
TAPE 2 MONITOR  
Turns the receiver on and off. See Page 13.  
Switches the receiver to monitor the source connected to the  
TUNING  
STATION  
TUNER  
CLASS MUTING  
TAPE 2 MONITOR  
jacks. See Page 16.  
FM MONO  
FM/AM  
Receive  
Section  
TAPE2  
S.BASS  
MONITOR  
FUNC  
S. BASS  
MUTING  
Press to enhance bass sound.  
POWER  
CD  
VOLUME  
TAPE  
RECEIVER  
Silences the receiver. Press again to restore the sound to its  
previous level. See Page 14.  
STA-3500  
STEREO RECEIVER  
OSR  
SYSTEM REMOTE  
STATION  
CLASS  
Press to move the next higher or lower station in memory.  
Press to select the class of the station in memory  
FM MONO  
Press to disable the FM stereo mode to improve reception of  
weaker FM stations.  
TUNING  
Manual Tuning:  
Press once to select the next higher or  
lower frequency. Or, press and hold down to rapidly change  
frequencies.  
Automatic Tuning (FM Only):  
To search for the next lower  
when the frequency  
TUNING  
or higher station, release  
starts to change. The receiver searches up or down the band  
until it finds a strong station.  
FM/AM  
Press to switch between AM and FM bands.  
 
18  
Using the Remote Control  
CD Player Section  
CONTROL OUT  
Note: You must connect the CD player both to your receiver’s  
and audio jacks for these functions to work.  
CD POWER  
Turns the CD player on and off (only for CD players having  
the CONTROL IN/OUT feature).  
|
ASMS  
|
Returns to the beginning of the current track or advances to  
the next track.  
DISC SELECT  
Selects discs in a multi-play CD changer.  
Note: Some CD players might function with DISC SELECT.  
Plays the CD.  
CD  
BEST  
CD Player  
Section  
ASMS  
DISC  
DECK1  
DECK2  
Stops playback.  
TAPE  
Tape Sectio  
Press to temporarily stop play. Press again to resume.  
TUNING  
STATION  
TUNER  
FM MONO  
FM/AM  
CLASS MUTING  
BEST  
With a CD changer that has the BEST track memory function,  
such as an Optimus Professional Series CD-8200/8300/  
8400, press to select and play your favorite CD tracks.  
TAPE2  
S.BASS  
MONITOR  
FUNC  
POWER  
CD  
VOLUME  
TAPE  
RECEIVER  
Cassette Deck Section  
STA-3500  
STEREO RECEIVER  
OSR  
SYSTEM REMOTE  
Before operation, select TAPE 2 MONITOR or TAPE1/VCR.  
CONTROL  
Note: You must connect the cassette deck both to your receiver’s  
OUT and audio jacks for these functions to work.  
Press to start normal play.  
Press to play the reverse side of an auto-reverse cassette  
deck.  
Press to cancel the current function.  
Press to temporarily stop playback/recording. Press again to  
resume.  
and  
Lets you quickly locate and play the beginning of recorded  
material during play.  
When the tape is stopped, lets you rapidly search forward or  
backward to locate a specific section of the tape.  
DECK 1/DECK 2  
TAPE POWER  
Selects Deck 1 or Deck 2 when you use a dual cassette deck.  
When you use a single cassette deck, press DECK 2.  
Turns the cassette deck on and off.  
Note: TAPE POWER does not work with all Optimus Profes-  
sional Series cassette decks.  
 
19  
Troubleshooting  
If the receiver is not working as it should, the following suggestions might help. If you follow the suggestions in this chart and  
the receiver still does not work properly, contact your local RadioShack store for assistance.  
Problem  
Cause  
Solution  
Power does not turn on.  
No sound.  
• Power cord is disconnected.  
• Incorrect connections.  
• Plug in the power cord.  
• Check and correct the connections.  
• Press MUTING.  
• The mute function is activated.  
• The volume is turned down.  
• Speaker wires are disconnected.  
• Neither set of speakers is selected.  
• Turn up the volume.  
• Connect the speaker wires.  
• Press in SPEAKERS A or B.  
• Both SPEAKERS A and B are pressed • Press SPEAKERS button again for  
when only one set of speakers is  
connected.  
the terminals that have no speakers.  
TAPE 2 MONITOR is selected.  
• Press TAPE 2 MONITOR again.  
Sound is produced from only one  
speaker.  
• One of the speaker wires or input • Check all connections.  
cord is disconnected.  
BALANCE is set too far to one side.  
• Station not correctly tuned.  
• Antenna not connected.  
• Set BALANCE to the center position.  
High noise level.  
• Tune to a stronger station.  
• Connect the antenna.  
• FM antenna still coiled or is not point- • Stretch both ends of the antenna taut  
ing in the correct direction. and reposition the antenna.  
• AM loop antenna not pointing in the • Adjust the AM loop antenna.  
correct direction.  
• Noise is coming from another electri- • Try using an AC line noise filter to  
cal appliance.  
reduce the noise.  
Tuning does not automatically stop  
when searching for FM stations.  
• Stations are too weak.  
• Use a better antenna.  
Remote control does not work.  
• Batteries are dead or missing.  
• Install fresh batteries.  
• Poor angle or too great a distance • Use within 23 feet and within a 30-  
from the remote sensor window.  
degree angle of the remote sensor  
window.  
• There is an obstacle between you • Change your position or remove the  
and the remote sensor window. obstacle.  
• For CD players and cassette decks, • Connect the remote control cord.  
the remote control cord is not con-  
nected.  
• A fluorescent light is shining on the • Turn off the light.  
remote sensor window.  
Remote does not control cassette  
deck or CD player.  
• Cassette deck or CD changer not • The feature only works with Optimus  
compatible.  
Professional Series components.  
• Properly connect the control cable.  
• Properly connect the audio cables.  
• Control cable is not plugged in.  
• Audio cables are not plugged in.  
 
20  
Care and Maintenance  
Your STA-3500 Digital Synthesized AM/FM Stereo Receiver is an example of superior design and craftsmanship. The following  
suggestions will help you care for the receiver so you can enjoy it for years.  
Keep the receiver dry. If it gets wet, wipe it dry immediately. Liquids can contain  
minerals that can corrode the electronic circuits.  
Handle the receiver gently and carefully. Dropping it can damage its circuit  
boards and can cause the receiver to work improperly.  
Use and store the receiver only in normal temperature environments. Tempera-  
ture extremes can shorten the life of electronic devices, damage batteries, and  
distort or melt plastic parts.  
Keep the receiver away from dust and dirt, which can cause premature wear of  
parts.  
Wipe the receiver with a damp cloth occasionally to keep it looking new. Do not  
use harsh chemicals, cleaning solvents, or strong detergents to clean the  
CLEANER  
receiver.  
Use only fresh batteries of the recommended size and type in the remote con-  
trol. Always remove old or weak batteries. They can leak chemicals that can  
destroy electronic circuits.  
Modifying or tampering with your receiver’s internal components can cause a malfunction and might invalidate the receiver’s  
warranty and void your FCC authorization to operate it. If the receiver is not operating as it should, take it to your local  
RadioShack store for assistance.  
 
21  
The FCC Wants You To Know  
Your receiver might cause radio or TV interference even when it is operating  
properly. To determine whether your receiver is causing the interference, turn off  
your receiver. If the interference goes away, your receiver is causing it. Try to  
eliminate the interference by:  
• Moving your radio or TV away from the receiver  
• Connecting your receiver to an outlet that is on a different electrical circuit  
from the radio or TV  
• Contacting your local RadioShack store for help  
If you cannot eliminate the interference, the FCC requires that you stop using  
your receiver.  
 
22  
Specifications  
Amplifier  
Front Channel Average Power Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 Watts per Channel into 8 Ohms  
From 40 to 20,000 Hz,  
With No More than 0.9% Total Harmonic Distortion  
Measured Pursuant to the Federal Trade Commission’s  
Trade Regulation Rule on Amplifier Output Power Claims  
Input Sensitivity/Impedance  
Phono . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.8 mV/47 kOhms  
CD, LD/DVD, TAPE 1/VCR, Tape 2 Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 mV/47 kOhms  
Phono Overload Level (0.1% THD, 1 kHz) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 mV  
Frequency Response  
Phono . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Hz to 20,000 Hz ±0.5 dB  
CD, LD/DVD, TAPE 1/VCR, TAPE 2 Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Hz to 100,000 Hz +0/–3.0 dB  
Signal-to-Noise Ratio (IHF, Short Circuited, A Network)  
Phono . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 dB  
CD, LD/DVD, TAPE 1/VCR, Tape 2 Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 dB  
Signal-to-Noise Ratio (EIA, at 1 Watt, 1 kHz)  
Phono . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 dB  
CD, LD/DVD, TAPE 1/VCR, Tape 2 Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 dB  
FM Tuner  
Frequency Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87.5 to 108 MHz  
Usable Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Mono: 11.2 dBf, IHF (1.0 µV/75 Ohms)  
50 dB Quieting Sensitivity  
Mono . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16.8 dBf (1.9 µV/75 Ohms)  
Stereo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38.6 dBf (23.3 µV/75 Ohms)  
Signal-to-Noise Ratio  
Mono . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 dB (at 85 dBf)  
Stereo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 dB (at 85 dBf)  
Distortion Stereo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5% (1 kHz)  
Alternate Channel Selectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 dB (400 kHz)  
Stereo Separation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 dB (1 kHz)  
Frequency Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Hz to 15 kHz (±1 dB)  
Antenna Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 Ohms Unbalanced  
AM Tuner  
Frequency Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 530 to 1700 kHz  
Sensitivity (IHF, Loop Antenna) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 350 µV/m  
Selectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 dB  
Signal-to-Noise Ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 dB  
 
23  
Specifications  
General  
Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120 Volts AC, 60 Hz  
Power Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190 Watts (UL)  
AC Outlet Ratings Switched . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 Watts (0.8 Amps) Maximum  
Dimensions (HWD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51/2 × 169/16 × 11 3/4 Inches  
(140 × 420 × 298mm)  
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 lbs, 6oz (6.6 kg)  
Specifications are typical; individual units might vary. Specifications are subject to change and improvement without notice.  
 
24  
Index to Features by Control Name  
This table lists the control and indicator names found on the front of your receiver, along with the page number where the con-  
trol or indicator is discussed. To find a description for the buttons on the remote control, see “Using the Remote Control” on  
Page 18.  
Control  
Page  
BALANCE  
BASS  
15  
13  
CD  
13  
CLASS  
FM MONO  
FM/AM  
14  
15  
14  
LD/DVD  
MEMORY  
MUTING  
PHONES  
PHONO  
POWER  
13  
14  
16  
16  
13  
13  
SPEAKERS A and B  
STATION  
13  
14  
STANDBY  
12  
SUPER BASS  
TAPE 1/VCR  
TAPE 2 MONITOR  
TREBLE  
13  
13, 16  
13, 16  
13  
TUNER  
13  
TUNING  
14  
VOLUME  
13  
 
25  
Notes  
 
26  
 
27  
RadioShack Limited Warranty  
This product is warranted against defects for 2 years from date of purchase from  
RadioShack company-owned stores and authorized RadioShack franchisees and deal-  
ers. Within this period, we will repair it without charge for parts and labor. Simply bring  
your RadioShack sales slip as proof of purchase date to any RadioShack store. War-  
ranty does not cover transportation costs. Nor does it cover a product subjected to mis-  
use or accidental damage.  
EXCEPT AS PROVIDED HEREIN, RADIOSHACK MAKES NO EXPRESS WARRAN-  
TIES AND ANY IMPLIED WARRANTIES ARE LIMITED IN DURATION TO THE DURA-  
TION OF THE WRITTEN LIMITED WARRANTIES CONTAINED HEREIN. Some states  
do not permit limitation or exclusion of implied warranties; therefore, the aforesaid limi-  
tation(s) or exclusion(s) may not apply to the purchaser.  
This warranty gives you specific legal rights and you may also have other rights which vary from  
state to state.  
We Service What We Sell  
10/95  
RadioShack  
A Division of Tandy Corporation  
Fort Worth, Texas 76102  
<ARB1484-A>  
7A6  
Printed in Japan  
 

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