Radio Shack Stereo Receiver STAV 3670 User Guide

Cat. No. 31-3041  
Audio/Video  
Receiver  
STAV-3670  
VOLUME  
STAV-3670 AUDIO/VIDEO RECEIVER  
PHONO  
TUNER  
LD/DVD  
CD  
STAND BY  
POWER  
TAPE 2  
MONITOR  
VCR  
TAPE 1  
SUPER  
BASS  
SFC  
MODE  
DOLBY  
PRO LOGIC  
MIN  
MAX  
DOLBY SURROUND  
MEMORY  
FM MONO  
CLASS  
STATION  
P R O  
L O G I C  
TREBLE  
BALANCE  
BASS  
4-CHANNEL  
EQUAL POWER  
OUTPUT  
PHONES  
SPEAKERS  
A
B
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.  
Heed Warnings — Follow all warnings on the product and in the operating instructions.  
CAUTION  
Cleaning — Unplug this product from the wall outlet before cleaning. Use only a damp cloth for  
cleaning. Do not use liquid or aerosol cleaners.  
RISK OF ELECTRIC SHOCK.  
!
DO NOT OPEN.  
Attachments — Do not use attachments/accessories not recommended by the product manufac-  
turer, as they might create a hazard.  
CAUTION  
: TO REDUCE THE RISK OF  
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).  
ELECTRIC SHOCK, DO NOT REMOVE  
COVER OR BACK. NO USER-SERVICE-  
ABLE PARTS INSIDE. REFER SERVICING  
TO QUALIFIED PERSONNEL.  
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.  
Carts — Move the product on a cart carefully. Quick stops, excessive force, and  
uneven surfaces may cause the product/cart to overturn.  
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.  
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 inform you that  
important operating and maintenance in-  
!
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.  
structions are included in the literature ac-  
companying this system.  
WARNING: TO REDUCE THE RISK OF  
FIRE OR ELECTRIC SHOCK, DO NOT EX-  
POSE THIS APPLIANCE TO RAIN OR  
MOISTURE.  
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.  
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.  
CAUTION  
Overloading — Do not overload wall outlets, extension cords, or integral convenience receptacles,  
as this can result in a risk of fire or electric shock.  
Power LinesLocate an outdoor antenna away from  
power lines.  
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.  
Nonuse PeriodsUnplug the receiver’s power cord  
when you will not use it for extended periods.  
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.  
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.  
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.  
Antenna  
Lead-In  
Wire  
If the product has been dropped or damaged in any way.  
When the product exhibits a distinct change in performance.  
Ground Clamp  
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.  
Antenna  
Discharge Unit  
(NEC Section 810-20)  
Electric  
Service  
Grounding Conductors  
(NEC Section 810-21)  
Safety Check — Upon completion of service or repairs to this product, ask the service technician  
Equipment  
to perform safety checks to determine that the product is in proper operating condition.  
Grounding Clamps  
Wall or Ceiling Mount — The product should be mounted to a wall or ceiling only as recommended  
by the manufacturer.  
Power Service Grounding  
Electrode System  
(NEC Article 250, Part H)  
NEC -- National Electrical Code  
Heat — The product should be situated away from heat sources such as radiators, heat registers,  
stoves, or other products (including amplifiers) that produce heat.  
 
3
Contents  
Preparing Your Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5  
Positioning Speakers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5  
Connecting Speakers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6  
Connecting Program Sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9  
Connecting the Antennas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11  
Using One Remote Control for More Than One Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13  
Installing the Remote Control’s Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13  
Using the AC Power Outlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14  
Connecting to AC Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14  
Basic Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15  
Tuning the Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16  
Using FM MONO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17  
BALANCE Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17  
Muting the Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17  
Using Headphones . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17  
Cassette Deck/VCR Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18  
Using the VCR/TAPE 1 and TAPE 2 MONITOR Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18  
Recording an Audio Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18  
Dubbing a Cassette Tape . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18  
Playing and Recording Video Tapes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19  
Using Advanced Sound Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20  
Sound Mode Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21  
Using the Remote Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22  
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24  
Returning Controls to Factory Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24  
Care and Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25  
The FCC Wants You to Know . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26  
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27  
Index to Features by Control Name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29  
 
4
Preparing Your Receiver  
Caution: Make all the necessary connections before you plug in or turn on the receiver.  
Where you place your speakers (not supplied) can make a noticeable difference  
in your system’s sound. The guidelines in this section will help you choose the  
best locations. After you use your receiver for a while, you might want to try dif-  
ferent 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 Speakers  
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.  
Normal ListeningPoint
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.  
• Surround speakers generally sound  
best if you position them above ear  
level.  
To avoid interference with the picture  
on a nearby TV, use magnetically  
shielded speaker systems. This is par-  
ticularly important for the center  
speaker since it is usually located  
closest to the TV.  
To position your speakers for surround sound, place the A or B front speakers at  
the front of your listening area, and place the (rear) surround speakers behind  
or to the sides of the listening point (see “Using Advanced Sound Options” on  
Page 20). Also, place the center speaker above, below, or behind the TV.  
Sound might not appear to coincide with the picture if you place it beside the TV.  
TV  
Front Left  
Speaker  
Front Right  
Speaker  
Center Speaker  
Front  
Listening  
Area  
Rear  
Rear Left  
Speaker  
Rear Right  
Speaker  
 
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  
Speakers A and one set to Speakers  
B.  
Speaker Wire  
Wire Strands  
• Realistic, Optimus, and other high-  
quality speakers have color-coded  
speaker terminals (red for positive po-  
larity and black for negative polarity).  
Use these color-coded terminals as a  
guide to help you properly connect the  
speakers to the receiver.  
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 be-  
fore 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  
Right  
Front Speakers B  
Left  
Right  
Front Speakers A  
Left  
Center Speaker  
R
R
L
L
A
B
A
B
AUDIO  
IN  
FRONT SPEAKERS  
L
R
PRE OUT  
L
R
SUB  
WOOFER  
CENTER  
SPEAKER  
REAR  
SPEAKERS  
Amplified  
Subwoofer  
Surround  
Speakers  
Right  
Left  
Connecting the A and B Speakers  
Note: Be sure you connect the re-  
ceiver’s right and left positive (+) and  
negative (–) terminals to the speaker’s  
corresponding right and left positive (+)  
and negative (–) terminals.  
Follow these steps to connect the right speaker to the receiver’s right FRONT  
SPEAKERS A terminals.  
1. Lift the receiver’s FRONT SPEAKERS A R (+) red lever and insert the ridged  
or color-coded conductor’s end into the small hole. Pull down the lever to  
secure the conductor.  
2. Lift the receiver’s FRONT SPEAKERS A R () black lever and insert the other  
conductor’s end into the small hole. Pull down the lever to secure the con-  
ductor.  
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 1–4 to connect the left speaker to the receiver’s FRONT SPEAKERS  
A left terminals.  
Repeat this entire process to connect a second pair of speakers to the FRONT  
SPEAKERS B terminals.  
 
7
Preparing Your Receiver  
Connecting Surround-Sound Speakers  
You can connect a pair of speakers to the receiver for surround-sound pro-  
grams. Follow the steps in “Connecting the A and B Speakers” to connect the  
speakers to the REAR SPEAKERS terminals.  
Connecting the Center Speaker  
The center speaker gives additional ambience to surround sound. Follow the  
steps in “Connecting the A and B Speakers” to connect the center speaker to  
the CENTER SPEAKER terminals.  
Connecting a Subwoofer Amplifier  
Your receiver includes a line-level subwoofer output. Connecting a subwoofer to  
your system dramatically extends bass response for incredible richness and  
depth. When you listen to surround-sound programs, a subwoofer enhances  
your home theater experience by realistically recreating the rumble of an earth-  
quake, the bone-jarring percussion of a cannon, and more. To use the sub-  
woofer output, simply connect SUBWOOFER to an amplified subwoofer’s line-  
level input or to an amplifier to which you have connected a subwoofer.  
RadioShack stores sell a variety of suitable subwoofers and amplifiers.  
 
8
Preparing Your Receiver  
You can connect up to five external program sources to your receiver.  
Connecting Program Sources  
OUT  
IN  
IN  
TO MONITOR TV  
VIDEO OUT  
Note: Use shielded audio cables with  
phono connectors for all audio connec-  
tions.  
VIDEO  
PLAY  
IN  
REC  
OUT  
IN  
IN  
IN  
L
L
L
OUT  
R
R
R
TAPE2  
MONITOR  
SIGNAL  
GND  
VCR/  
TAPE 1  
LD/  
DVD  
PHONO  
CD  
CONTROL  
LINE  
LINE  
PLAY  
REC  
REC  
PLAY  
REC  
REC  
OUT PUT  
L
L
L
R
R
PLAY  
PLAY  
R
INPUT OUTPUT  
INPUT OUTPUT  
CD  
Turntable  
Cassette Deck  
Cassette Deck  
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.  
L
R
Connect the turntable’s left and right cables to the receiver’s (left) and (right)  
PHONO  
SIGNAL  
jacks. Then connect the turntable’s ground wire to the receiver’s  
terminal.  
GND  
Connecting a CD Player  
To connect a CD player to the receiver, connect the CD player’s left and right  
L
R CD IN  
jacks.  
output jacks to the receiver’s and  
Connecting Cassette Decks  
VCR/TAPE 1  
TAPE 2 MONITOR  
jacks.  
You can connect cassette decks to the  
and the  
Note: If you place the cassette deck di-  
rectly 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.  
VCR/TAPE 1 IN  
TAPE 2  
(audio) or  
Connect the cassette deck’s output jacks to the  
MONITOR PLAY  
VCR/TAPE  
jacks, and connect the cassette deck’s input jacks to the  
TAPE 2 MONITOR REC  
jacks.  
1 OUT  
(audio) or  
LD/DVD IN  
You can connect a third cassette deck (for playback only) to the  
(audio) jacks.  
 
9
Preparing Your Receiver  
OUT  
OUT  
IN  
IN  
IN  
IN  
TO MONITOR TV  
VIDEO OUT  
VIDEO  
PLAY  
IN  
REC  
IN  
L
L
OUT  
R
R
TAPE2  
MONITOR  
VCR/  
TAPE 1  
LD/  
DVD  
CD  
CONTROL  
PHONO  
SIGNAL  
GND  
VIDEO  
AUDIO  
PLAY  
AUDIO  
OUT  
VIDEO  
OUT  
REC  
VIDEO  
IN  
OUT  
IN  
L
L
R
R
REC  
PLAY  
INPUT OUTPUT  
VCR  
VCR  
LD/DVD Player  
TV Monitor  
Connecting Video Sources  
If you connect two video sources, such as VCRs, laser disc (LD) players, or dig-  
ital video disc (DVD) players to your receiver, you can use the receiver to select  
each video source. You can also use the receiver to easily record from these  
video sources to the source connected to VCR/TAPE 1.  
Note: If your VCR is monaural, use a Y-  
adapter (available at your local Ra-  
dioShack store) to connect the VCR’s  
audio output to both the L and R audio in-  
puts on the receiver.  
Connect phono cables from each video source’s audio outputs to the receiver’s  
VCR/TAPE 1 or LD/DVD IN (audio) jacks. Then connect phono cables from the  
receiver’s VCR/TAPE 1 OUT (audio) jacks to the source’s audio input jacks.  
Connect video cables from each video source’s video outputs to the receiver’s  
VCR/TAPE 1 or LD/DVD VIDEO IN jacks. Then connect video cables from the  
receiver’s VCR/TAPE 1 VIDEO OUT jack to the source’s video input.  
Connecting a Video Monitor  
The monitor (or TV with baseband video input) you connect to the VIDEO OUT ter-  
minal can monitor any program you connect to the receiver’s VCR/TAPE 1 or LD/  
DVD input jacks. Connect a video cable from the receiver’s VIDEO OUT TO MONI-  
TOR TV jack to the monitor’s video input.  
 
10  
Preparing Your Receiver  
In many areas, the supplied indoor AM loop and FM antennas provide satisfac-  
tory reception.  
Connecting the Antennas  
AM Antennas  
Assemble the supplied AM 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. 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.  
AM LOOP ANTENNA  
Attach the antenna wires to the  
(right two terminals).  
and (ground) terminals  
Place the antenna on a flat surface and rotate it for the best AM reception.  
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.  
AM Loop Antenna  
FM  
UNBAL 75  
AM  
• Do not place the antenna near a CD player, a personal computer, or a TV  
set.  
LOOP ANTENNA  
• If the wire between your AM loop antenna and receiver is too short, you  
can add extra wire, available at your local RadioShack store.  
ANTENNA  
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.  
Outdoor AM Antenna  
FM  
UNBAL 75  
AM  
LOOP ANTENNA  
ANTENNA  
FM Antennas  
FM UNBAL 75  
Connect the supplied FM antenna to the  
extend it.  
terminal as shown, then  
AM Loop Antenna  
ILLUSTRATION STILL REQUIRED  
For better FM reception, you can also use a rabbit-ear TV antenna (for indoor  
use only). 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 antennas  
and antenna connection accessories.  
Note: For the best results, use 75-ohm  
coaxial cable to connect an outdoor an-  
tenna to the receiver.  
 
11  
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 75coaxial cable.  
Warning: To prevent injury, read and fol-  
low all cautions and warnings that ac-  
company the outdoor antenna.  
Note: If your antenna has 300twin-lead cable, consult your local RadioShack  
store for the correct adapter.  
1. Disconnect the supplied FM antenna from the receiver’s FM UNBAL 75Ω  
terminal.  
2. With a stripping tool, remove about 11/2 inches of the outdoor antenna  
cable’s outer insulation to expose the cable’s shielding.  
3. Fold back the shielding from the inner insulation.  
4. Remove about 1 inch of the inner insulation from around the center wire.  
Inner Insulation  
Center Wire  
Outer Insulation  
Shielding  
5. Pull the shielding to one side. Connect the center wire to the receiver’s FM  
UNBAL 75terminal. Twist the shielding to secure any loose wire strands,  
and connect it to the FM UNBAL 75terminal.  
Caution: The cable’s shielding should  
only touch the terminal.  
Outdoor FM Antenna  
FM  
UNBAL 75  
AM  
LOOP ANTENNA  
Center  
Wire  
Shielding  
ANTENNA  
Note: Grounding is not necessary for reception, but we recommend it for better  
FM reception and to avoid damage from lightning when you use an outdoor FM  
antenna. Use a separate piece of thick polyvinyl insulated wire to connect the  
terminal to the building’s power service grounding electrode system.  
Warning: Never connect a wire to a gas pipe for grounding since sparks might  
ignite the gas.  
 
12  
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  
jack, that com-  
1. Connect each component to the receiver as shown in “Connecting Pro-  
gram Sources” on Page 9.  
ponent’s remote sensor does not func-  
tion.  
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.  
CONTROL  
CONTROL  
IN  
OUT  
IN  
OUT  
2. Connect the cable supplied with the CD player, VCR, or cassette deck to  
CONTROL OUT  
CONTROL IN  
jack and the other component’s  
the receiver’s  
jack.  
3. When you want to control more than one other component using the  
Other Component  
with OSR Mark  
Receiver  
CONTROL OUT  
CONTROL IN  
and  
receiver’s remote control, daisy-chain the  
connections as shown.  
To the CONTROL IN Jack  
of Another Component  
Having the OSR Mark  
Remote  
Control  
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 slide open the battery compartment cover.  
Cautions:  
2. Place two fresh AA batteries in the compartment as indicated by the  
polarity symbols (+ and –) marked in the compartment.  
• Use only fresh batteries of the required  
size and recommended type.  
• Always remove old or weak batteries.  
Batteries can leak chemicals that can  
damage electronic circuits.  
3. Replace the battery compartment cover.  
Note: If the remote’s range is reduced,  
replace the batteries immediately.  
 
13  
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.  
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.  
R
L
A
B
R
L
CAUTION: DO NOT CONNECT TV SET OR MONITOR.  
FRONT SPEAKERS  
L
R
AC 120V 60HZ  
SWITCHED  
100W MAX  
0.8A MAX  
L
R
AC OUTLET  
CENTER  
SPEAKER  
REAR  
SPEAKERS  
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 un-  
less you can fully insert the blades to  
prevent blade exposure.  
R
L
A
B
R
L
CAUTION: DO NOT CONNECT TV SET OR MONITOR.  
FRONT SPEAKERS  
L
R
AC 120V 60HZ  
SWITCHED  
100W MAX  
0.8A MAX  
L
R
AC OUTLET  
CENTER  
SPEAKER  
REAR  
SPEAKERS  
 
14  
Basic Operation  
Note: The controls on the remote control work the same as the buttons on the  
receiver’s front panel, though some are labeled differently.  
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.  
If you connected speakers only to the FRONT SPEAKERS A (or B) terminals,  
press SPEAKERS A (or B) to turn on only those speakers.  
If you connected speakers to both the FRONT SPEAKERS A and B terminals,  
either:  
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 23 (for the remote control) or Page  
29 (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 out SPEAKERS A and B to turn off all speakers and listen privately  
with headphones (see “Using Headphones” on Page 17).  
3. Select a program source.  
To tune to a radio station, see “Tuning the Radio” on Page 16.  
To listen to signals from the component connected to TAPE 2 MONITOR,  
press TAPE 2 MONITOR so TAPE2appears on the display.  
Note: If you select a source while TAPE 2  
MONITOR is engaged, TAPE 2 flashes  
five times on the display, reminding you  
to disengage the TAPE 2 MONITOR func-  
tion.  
To listen to a source other than one connected to TAPE 2 MONITOR, be sure  
TAPE2does not show on the display. If necessary, press TAPE 2 MONITOR  
so TAPE2disappears. Then press VCR/TAPE 1, PHONO, TUNER, CD, or LD/  
DVD (laser disc/digital video disc), or repeatedly press FUNCTION on the  
remote control, to display the desired program source.  
4. Adjust VOLUME clockwise to increase the volume or counterclockwise to  
decrease it. Or, you can use MASTER 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 Con-  
trol” on Page 17.  
7. When you finish using the receiver, press POWER to turn it off.  
 
15  
Basic Operation  
Tuning the Radio  
Your receiver offers three types of electronic tuning — manual, automatic, and  
memory.  
Manual and Automatic Tuning  
Note: For weak signals, we recommend  
manual tuning.  
Follow these steps to manually or automatically tune to the stations.  
TUNER  
FM/AM  
to select the desired band. The receiver  
1. Press  
. Then press  
tunes to and displays the frequency last selected in that band.  
TUNING  
2. Press  
quency. Or, hold down  
Release the button to stop.  
or once to manually select the next higher or lower fre-  
TUNING  
or to rapidly change frequencies.  
TUN-  
To automatically search for the next higher or lower station, release  
ING  
as soon as the display starts to change. The receiver searches up or  
down the band to the next strong station.  
Notes:  
TUNEDappears when you tune to a strong station.  
TUNING  
TUNING  
If you press  
at the top of the frequency range or  
at  
the bottom of the frequency range, the display returns to the other  
end of the range.  
Automatic tuning works for FM stations only.  
Memory Tuning  
Memory tuning lets you store up to 30 AM or FM frequencies in three different  
classes (10 frequencies in each class), then instantly tune to a stored station.  
Follow these steps to store a station in a memory location.  
TUNER  
FM/AM  
to select the desired band.  
1. Press  
. Then press  
2. Use either manual or automatic tuning to 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 stereo or monaural sound (see “Using  
FM MONO” on Page 16). This setting is also stored in memory.  
• If your receiver is disconnected from  
AC power for several days, it loses all  
the stored frequencies.  
MEMORY  
3. Press  
. MEMORYlights, and -(for the channel number) and the  
class number (1, 2, or 3) flash on the display for about 5 seconds.  
CLASS  
4. While MEMORYappears, press  
until the class number you want (1,  
STATION  
2, or 3) appears, then press  
or until the channel number you  
want appears.  
The class and station numbers light steadily, indicating the receiver mem-  
orized the frequency.  
CLASS  
To tune to a stored station, press  
so the desired class number appears,  
STATION  
/
then press  
to select the station.  
Basic Operation  
FM MONO  
To receive FM stations in stereo, press  
so MONOdisappears from the  
Using FM MONO  
 
16  
display. STEREOappears when you receive an FM broadcast in stereo.  
You can improve the reception of weak FM stations by pressing FM MONO until  
MONOappears. This reduces noise while you listen to a weak FM station, but  
you get monaural instead of stereo sound.  
The BALANCE control lets you adjust the sound balance between the left and  
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 Control  
For an unusual speaker placement, adjust BALANCE as follows:  
1. Select TUNER. Then press FM/AM to select the FM band.  
2. Press FM MONO so MONOappears. The sound is monaural instead of ste-  
reo, so each speaker delivers the same output.  
3. Turn BALANCE until you hear the sound coming equally from each speaker  
when you are in the listening area.  
4. Press FM MONO so MONOdisappears from the display.  
To temporarily mute the sound, press MUTING on the remote control. MUTING  
appears. Press MUTING again to restore the audio level.  
Muting the Receiver  
Using Headphones  
1
To listen with headphones (not supplied), insert the headphones’ /4-inch plug  
into the receiver’s front panel PHONES jack. To silence the speakers, press  
SPEAKERS A and B so you can listen with headphones without disturbing others.  
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 the 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.  
 
17  
Cassette Deck/VCR Features  
You can connect two cassette decks to the receiver. Selecting either VCR/TAPE 1  
or TAPE 2 MONITOR lets you hear the playback from the cassette deck you con-  
nected to the receiver’s corresponding (VCR/TAPE 1or TAPE 2 MONITOR) jacks.  
Press VCR/TAPE 1. VCRappears on the display. You hear the playback from the  
cassette deck or VCR you connected to the receiver’s VCR/TAPE 1 IN jacks.  
Using the VCR/TAPE 1 and  
TAPE 2 MONITOR Buttons  
Press TAPE 2 MONITOR. TAPE 2appears on the display along with the last pro-  
gram 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 MONITOR REC jacks continue to output sound from the previously selected  
source when you press TAPE 2 MONITOR.  
To return to the previous source, press TAPE 2 MONITOR again so TAPE2disap-  
pears.  
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 so TAPE2disappears from the display.  
• Do not press TAPE 2 MONITOR while you are recording on the deck con-  
nected to TAPE 2 MONITOR REC. If you do, the recording is interrupted for  
about 1 second.  
The receiver sends the audio of the program source you selectVCR/TAPE 1,  
CD, LD/DVD, TUNER, or PHONOto the VCR/TAPE 1 OUT (audio) and TAPE 2 MONI-  
TOR REC jacks (if you select VCR/TAPE 1 or LD/DVD, the video program is also sent  
to the TO MONITOR TV jack).  
Recording an Audio Source  
Dubbing a Cassette Tape  
The VOLUME control does not affect the level of the signal going to the tape  
decks.  
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 VCR/TAPE 1 jacks as the source, and the deck you connected to the TAPE 2  
REC jacks as the recording deck. Then press TAPE 2 MONITOR so TAPE2and the  
last program source you selected appear on the display. See “Using the VCR/  
TAPE 1 and TAPE 2 MONITOR Buttons.”  
 
18  
Cassette Deck/VCR Features  
You can connect two video sources to the receiver. If you connect a VCR to the  
Playing and Recording  
Video Tapes  
VCR/TAPE 1  
LD/DVD  
audio and video jacks, you can copy video cassette  
and  
tapes from one VCR to another and monitor the dubbing process.  
Playing a Video Tape  
VCR/TAPE 1  
To play a video tape, load the tape into the VCR connected to either  
LD/DVD  
VCR/TAPE 1  
LD/DVD  
or ) that corresponds to the jack  
or  
. Press the button (  
the VCR is connected to. VCRor LD/DVDappears on the display. Follow the  
VCR’s instructions to begin playback. If you connected a monitor to the  
TO MONITOR TV  
receiver’s  
jack, you can view the program on that monitor.  
Copying a Video Tape  
Follow these steps to copy a video tape from one VCR to another.  
LD/DVD  
1. Load the tape you want to copy into the VCR connected to  
.
2. Load a blank tape (or one you want to record over) into the VCR con-  
VCR/TAPE 1  
nected to the  
jacks.  
LD/DVD  
3. Press  
.
4. Begin recording and playback on the VCRs.  
Important: Most material performed in public, such as concerts, plays, and  
movies, or distributed on prerecorded video tapes is copyrighted. The unautho-  
rized recording or duplication of copyrighted material is a violation of the copy-  
right laws of most countries and such duplication may result in fines,  
imprisonment, or both. Note, however, that in the United States, it is not a viola-  
tion of U.S. copyright laws for a consumer to record a broadcast television pro-  
gram for private (in-home) viewing.  
 
19  
Using Advanced Sound Options  
Your receiver has four special sound options: Dolby Pro Logic Surround, Dolby  
3CH Logic, Studio-Effect Surround, and Simulated Surround. These special  
options enhance a program source.  
Notes:  
To get the full benefit from programs encoded with Dolby Surround  
Sound, you need a stereo VCR.  
• Dolby Surround does not operate correctly if the signal passes through a  
graphic equalizer. If you connected an equalizer to the TAPE 2 MONITOR  
jacks, do not select TAPE 2 MONITOR when you listen to Dolby Surround  
signals.  
To activate Dolby Pro Logic Surround or Dolby 3CH Logic, press DOLBY PRO  
LOGIC, then press CENTER MODE on the remote control to select the Dolby Pro  
Logic options (normal, wide, or phantom) or Dolby 3CH Logic.  
For studio effect or simulated surround, press SFC MODE until the desired option  
appears on the display. On the remote control, press SURR MODE to select the  
sound options; when you select the Dolby Pro Logic, use CENTER MODE to make  
a selection (see “Sound Mode Adjustments (Remote Control Only)” on  
Page 21).  
Dolby Pro Logic Surround  
Dolby Pro Logic Surround puts you in the middle of the action. The center- and  
rear-channel speakers add incredible realism by directing the sound to the  
appropriate speakers, making you feel like you are really there. You can find  
hundreds of movies, television shows, and compact discs produced with Dolby  
Surround.  
Dolby 3CH Logic  
Dolby 3CH Logic produces a more spacious sound field than is possible with  
ordinary stereo playback, by combining the front and rear speaker sounds.  
Select this mode when you play a Dolby Surround Sound program and do not  
have rear speakers. The rear channel’s sound is sent to the front left and right  
speakers.  
Studio Effect  
Studio Effect gives the effect of listening in a recording studio. The front speak-  
ers provide normal stereo, and the rear speakers provide a subtly reverberated  
sound. Select this mode when you listen to sources not encoded with Dolby  
Surround.  
Simulated Surround  
Simulated Surround simulates a surround effect when you listen to a monaural  
(mono) source.  
 
20  
Using Advanced Sound Options  
Center Mode Setting  
Sound Mode Adjustments  
(Remote Control Only)  
The center mode setting affects the center channel’s bass signals. It operates  
only when you select the Dolby Pro Logic Surround or Dolby 3CH Logic mode.  
AUDIO SURROUND  
SURROUND  
. Each time you  
Slide  
press  
on the remote control to  
Note: If you do not use a center speaker,  
the monaural signals are only repro-  
duced if you select PHANTOM.  
CENTER MODE  
on the remote control, the setting changes and the  
receiver’s corresponding indicator lights: NORMAL, WIDE, or PHANTOMDolby  
Pro Logic Surround options, or 3CH LOGIC.  
NORMAL — Select this mode if you use a small center speaker. The front left  
and right speakers play the center-channel bass sounds.  
WIDE— Select this mode if you use a medium or large center speaker. The  
center speaker plays the center-channel bass sounds.  
PHANTOM— Select this mode if you have no center speaker. All center-chan-  
nel sound comes from the front left and right speakers.  
Test Tone  
The test tone feature provides a test tone that lets you balance the signal levels  
between all your speakers. To adjust the levels, see “Center Level” and “Rear  
Level.”  
To activate the test tone, select one of the surround sound modes and set  
AUDIO SURROUND  
SURROUND  
TEST TONE  
. Then press . The  
on the remote to  
receiver sounds a 2-second tone from the front left, center, front right, and rear  
speakers, in sequence. The center test tone sounds only when you select the  
Dolby Pro Logic Surround or Dolby 3CH Logic sound mode.  
In the Dolby 3CH Logic sound mode, the receiver sounds a 2-second tone from  
the left, center, and right speakers, in sequence.  
TEST TONE  
Press  
again to turn off this feature.  
Center Level  
– CENTER LEVEL +  
Press  
to adjust the center speaker sound level while in the  
Dolby Pro Logic Surround or Dolby 3CH Logic mode.  
Notes:  
VOLUME  
• Use the  
control to adjust the  
overall sound level.  
Rear Level  
• Set the center mode to a selection  
other than PHANTOM before adjusting  
the center level.  
– REAR LEVEL +  
Press  
to adjust the rear speakers’ sound level while in the Dolby  
Pro Logic Surround or Simulated Surround mode.  
Delay Time  
In the Simulated Surround and Dolby Pro Logic Surround modes, the receiver  
slightly delays the sound going to the rear speakers. You can change the delay  
time from 15 to 30 milliseconds (ms) in 5 ms steps. Adjust this for the best sur-  
round effect.  
Notes:  
• For Dolby Pro Logic Surround, the de-  
lay is preset to 5 ms.  
• The delay time does not affect the Stu-  
dio Effect mode.  
AUDIO SURROUND  
SURROUND  
DELAY TIME  
. Then hold down to change the  
Slide  
to  
delay time. The receiver displays the selected time.  
 
21  
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.  
AUDIO SURROUND Switch  
Set the switch to AUDIO to control audio components such as CD players or cas-  
sette decks. Set the switch to SURROUND when setting the surround sound  
options.  
AUDIO SURROUND  
When you set the switch to SURROUND, dual-function buttons control the function  
marked in gold next to the button. For example, the button marked TEST TONE  
and RETURN operates the test tone function when you set the switch to SUR-  
ROUND and returns the system to default settings when you set the switch to  
AUDIO.  
SURROUND  
AUDIO  
ASMS  
CD  
RANDOM  
BEST  
DISC  
Receiver/Amplifier Operation  
DECK1  
DECK2  
TAPE  
Before operation press RECEIVER POWER to select receiver/amplifier operation.  
STATION  
CLASS FM MONO  
TAPE2  
STATION  
AU-  
Moves to the next higher or lower station in memory with  
REAR  
FUNCTION  
LEVEL  
MONITOR  
DIOSURROUND set to AUDIO.  
CENTER  
LEVEL  
SURR  
MODE  
Receiver/  
MUTING  
CLASS  
AUDIOSUR-  
Selects the class of the station in memory with  
ROUND set to AUDIO.  
Amplifier  
TEST  
DELAY  
TIME  
CENTER  
MODE  
TONE  
Section  
RETURN  
S.BASS  
POWER  
CD  
MASTER  
VOLUME  
RECEIVER  
TAPE  
FM MONO  
AUDIOSURROUND  
set to  
Selects the FM reception mode with  
AUDIO. See Page 17.  
AUDIO/VIDEO  
SYSTEM REMOTE  
OSR  
– REAR LEVEL +  
TAPE 2 MONITOR  
Controls the relative volume of the rear speakers. See Page 21.  
Switches the receiver to monitor the source connected to the  
TAPE 2 MONITOR jacks. See Page 15.  
FUNCTION  
Selects a program source (VCR/TAPE 1, PHONO, TUNER, CD,  
or LD/DVD). Repeatedly press FUNCTION until the display shows  
your desired program source. See Page 15.  
RECEIVER  
POWER  
– CENTER LEVEL +  
SURR MODE  
Controls the relative volume of the center speaker. See Page 21.  
Selects between Dolby Pro Logic Surround or Simulated Sur-  
round sound. See Page 20.  
MUTING  
Silences the receiver. Press again to restore the sound to its pre-  
vious level. See Page 17.  
TEST TONE  
RETURN  
AUDIOSURROUND  
set  
Sounds test tones from each speaker with  
to SURROUND. See Page 21.  
Returns the receiver to its default settings with  
AUDIOSUR-  
ROUND set to AUDIO. See Page 24.  
CENTER MODE  
DELAY TIME  
Selects among the three center modes or 3CH Logic. See Page  
21.  
Sets the rear-channel delay for Dolby Pro Logic Surround and  
Simulated Surround programs with AUDIOSURROUND set to  
SURROUND. See Page 21.  
S. BASS  
AUDIOSURROUND  
Enhances bass sound with  
set to .  
AUDIO  
+ MASTER VOLUME –  
Adjusts the system’s volume. See Page 15.  
Turns the receiver on and off. See Page 15.  
RECEIVER POWER  
Using the Remote Control  
 
22  
CD Player Operation  
Before operation:  
• Set AUDIOSURROUND to AUDIO.  
• Press CD POWER to select the CD player operation.  
• You must connect the CD player to both your receiver’s CONTROL OUT 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.  
Stops playback.  
Press to pause play. Press again to resume.  
Plays the CD.  
SURROUND  
AUDIO  
ASMS  
RANDOM  
BEST  
Plays the tracks on a CD in random order.  
CD  
CD Player  
With a CD player that has a BEST track memory function, such  
as an Optimus Professional Series CD-8200/8300/8400, press to  
select and play your favorite CD tracks.  
Section  
RANDOM  
BEST  
DISC  
DECK1  
DECK2  
DISC  
Selects discs in a multi-play CD changer.  
TAPE  
Tape Section  
Note: Some CD players might not function with DISC SELECT.  
STATION  
CLASS FM MONO  
TAPE2  
REAR  
FUNCTION  
LEVEL  
MONITOR  
CENTER  
LEVEL  
Tape Operation  
SURR  
MODE  
MUTING  
TEST  
DELAY  
TIME  
CENTER  
MODE  
TONE  
RETURN  
S.BASS  
Before operation:  
POWER  
CD  
MASTER  
VOLUME  
RECEIVER  
TAPE  
• Set AUDIOSURROUND to AUDIO.  
AUDIO/VIDEO  
SYSTEM REMOTE  
OSR  
• Press TAPE POWER to select the cassette deck operation.  
• For a dual cassette deck, select DECK 1 or DECK 2. If you use a single cas-  
sette deck, press DECK 2.  
TAPE POWER  
CD POWER  
• You must connect the cassette deck to both your receiver’s CONTROL OUT  
and audio jacks for these functions to work.  
DECK 1/DECK 2  
Selects Deck 1 or Deck 2 when you use a dual cassette deck.  
Press to play the other side of an auto-reverse cassette deck.  
Press to start normal playback.  
and  
Lets you quickly locate and play the beginning of recorded mate-  
rial during play.  
When the tape is stopped, lets you rapidly search forward or  
backward to locate a specific section of the tape.  
Stops playback/recording.  
Press to temporarily stop playback/recording. Press again to re-  
sume.  
TAPE POWER  
Turns on/off the cassette deck.  
Note: TAPE POWER does not work with all decks.  
 
23  
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  
Suggestion  
• Plug in the power cord.  
Power does not turn on.  
• Power cord is disconnected.  
• Protection circuit is activated.  
• Unplug the power cord, then plug it in again.  
The receiver does not respond  
to button presses.  
• Static discharge has affected the  
receiver.  
• Unplug the power cord, then plug it in again. (If  
static electricity is a problem, use the remote con-  
trol as much as possible.)  
No sound.  
• Incorrect connections.  
• Check and correct the connections.  
• Press MUTING.  
• The mute function is activated.  
• The volume is turned down.  
• Speaker wires are disconnected.  
• Turn up the volume.  
• Connect the speaker wires.  
• Neither set of speakers is selected. • Press in SPEAKERS A or B.  
• TAPE 2 function is engaged.  
• Press TAPE 2 so TAPE 2clears from the display.  
No picture when you select a  
video source.  
• The selected video source is not  
set correctly.  
• Correct the problem with the selected video  
source.  
• Incorrect connections.  
• Station not correctly tuned.  
• Antenna not connected.  
• Check and correct the connections.  
• Tune to a stronger station.  
• Connect the antenna.  
High noise level.  
• FM antenna still coiled or is not  
pointing in the correct direction.  
• Stretch both ends of the antenna taut and reposi-  
tion the antenna.  
• AM loop antenna not pointing in  
the correct direction.  
• Adjust the AM loop antenna.  
• Noise is coming from another elec- • Try using an AC line noise filter to reduce the  
trical appliance.  
noise.  
Automatic tuning does not stop • Stations are too weak.  
when searching for FM stations.  
• Use a better antenna.  
Cannot make copies of video  
tapes.  
Tapes are protected by a copy pro- • You cannot make a good copy.  
tection method.  
• Video connections are incorrect.  
• Check and correct the connections.  
Remote does not control cas-  
sette deck or CD player.  
• Cassette deck or CD player is not • The feature only works with Optimus Professional  
compatible.  
Series components.  
• Control cable is not plugged in.  
• Audio cables are not plugged in.  
• Properly connect the control cable.  
• Properly connect the audio cables.  
Press RETURN on the remote control to return the controls to the following set-  
tings.  
Returning Controls to  
Factory Defaults  
Tape 2 Monitor Off  
Source  
TUNER  
FM (Set to the last-tuned frequency. If the receiver cannot  
receive the frequency, it starts searching for the next strong  
station.)  
Band  
Surround Mode Off  
Muting  
Off  
Off  
Super Bass  
 
24  
Care and Maintenance  
Your Optimus STAV-3670 Audio/Video Receiver is an example of superior design and craftsmanship. The following sugges-  
tions 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  
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.  
 
25  
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.  
 
26  
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  
Front Channel Surround Power Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 Watts per Channel (1 kHz, 0.8% THD, 8 Ohms)  
Center Channel Surround Power Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 Watts (1 kHz, 0.8% THD, 8 Ohms)  
Continuous Rear Surround Power Output . . . . . . . . . . . . . . . . . . . . . . . . . . 80 Watts per Channel (1 kHz, 0.8% THD, 8 Ohms)  
Input Sensitivity/Impedance  
Phono . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.8 mV/47 kOhms  
CD, LD/DVD, VCR/TAPE 1, 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 ±0.3 dB  
CD, LD/DVD, VCR/TAPE 1, TAPE 2 Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Hz to 100,000 Hz +0/–3 dB  
Output Level/Impedance  
VCR/TAPE 1 OUT, TAPE 2 Monitor REC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 mV/2.2 kOhms  
Tone Controls  
Bass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±8 dB (150 Hz)  
Treble . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±8 dB (10 kHz)  
Super Bass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +8 dB (80 Hz)  
Signal-to-Noise Ratio (IHF, Short Circuited, A Network)  
Phono . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 dB  
CD, LD/DVD, VCR/TAPE 1, TAPE 2 Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 dB  
Signal-to-Noise Ratio (EIA, at 1 Watt, 1 kHz)  
Phono . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 dB  
CD, LD/DVD, VCR/TAPE 1, TAPE 2 Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 dB  
Video Section  
Input Sensitivity/Impedance VCR/TAPE 1, LD/DVD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Volt Peak-to-Peak/75 Ohms  
Output Level/Impedance VCR/TAPE 1, Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Volt Peak-to-Peak/75 Ohms  
Frequency Response VCR/TAPE 1, LD/DVD Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Hz to 7 MHz +0/–3 dB  
Signal-to-Noise Ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 dB  
Crosstalk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 dB  
 
27  
Specifications  
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 dB (at 85 dBf)  
Stereo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 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  
General  
Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120 Volts AC, 60 Hz  
Power Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230 Watts, 330 VA (UL)  
AC Outlet Ratings Switched . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Total 100 Watts (0.8 Amps) Maximum  
Dimensions (HWD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51/2 × 169/16 × 1215/16 Inches  
(140 × 420 × 328 mm)  
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 lb 9 oz  
(7.5 kg)  
Specifications are typical; individual units might vary. Specifications are subject to change and improvement without notice.  
 
28  
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 22.  
Control  
Page  
BALANCE  
BASS  
17  
15  
CD  
15  
CLASS  
16  
DOLBY PRO LOGIC  
FM MONO  
FM/AM  
20  
17  
16  
LD/DVD  
15  
MEMORY  
16  
PHONES  
17  
PHONO  
15  
POWER  
15  
SFC MODE  
SPEAKERS A and B  
STATION  
20  
15  
16  
SUPER BASS  
TAPE 2 MONITOR  
TREBLE  
15  
15, 18  
15  
TUNER  
16  
TUNING  
16  
VCR/TAPE 1  
VOLUME  
15, 18  
15  
 
29  
Notes  
 
30  
Notes  
 
31  
Limited Two-Year Warranty  
This product is warranted by RadioShack against manufacturing defects in material and workman-  
ship under normal use for two (2) years from the date of purchase from RadioShack company-  
owned stores and authorized RadioShack franchisees and dealers. EXCEPT AS PROVIDED  
HEREIN, RadioShack MAKES NO EXPRESS WARRANTIES AND ANY IMPLIED WARRANTIES,  
INCLUDING THOSE OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE,  
ARE LIMITED IN DURATION TO THE DURATION OF THE WRITTEN LIMITED WARRANTIES  
CONTAINED HEREIN. EXCEPT AS PROVIDED HEREIN, RadioShack SHALL HAVE NO LIABIL-  
ITY OR RESPONSIBILITY TO CUSTOMER OR ANY OTHER PERSON OR ENTITY WITH RE-  
SPECT TO ANY LIABILITY, LOSS OR DAMAGE CAUSED DIRECTLY OR INDIRECTLY BY USE  
OR PERFORMANCE OF THE PRODUCT OR ARISING OUT OF ANY BREACH OF THIS WAR-  
RANTY, INCLUDING, BUT NOT LIMITED TO, ANY DAMAGES RESULTING FROM INCONVE-  
NIENCE, LOSS OF TIME, DATA, PROPERTY, REVENUE, OR PROFIT OR ANY INDIRECT,  
SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, EVEN IF RadioShack HAS BEEN AD-  
VISED OF THE POSSIBILITY OF SUCH DAMAGES.  
Some states do not allow the limitations on how long an implied warranty lasts or the exclusion of in-  
cidental or consequential damages, so the above limitations or exclusions may not apply to you.  
In the event of a product defect during the warranty period, take the product and the RadioShack  
sales receipt as proof of purchase date to any RadioShack store. RadioShack will, at its option, un-  
less otherwise provided by law: (a) correct the defect by product repair without charge for parts and  
labor; (b) replace the product with one of the same or similar design; or (c) refund the purchase  
price. All replaced parts and products, and products on which a refund is made, become the prop-  
erty of RadioShack. New or reconditioned parts and products may be used in the performance of  
warranty service. Repaired or replaced parts and products are warranted for the remainder of the  
original warranty period. You will be charged for repair or replacement of the product made after the  
expiration of the warranty period.  
This warranty does not cover: (a) damage or failure caused by or attributable to acts of God, abuse,  
accident, misuse, improper or abnormal usage, failure to follow instructions, improper installation or  
maintenance, alteration, lightning or other incidence of excess voltage or current; (b) any repairs  
other than those provided by a RadioShack Authorized Service Facility; (c) consumables such as  
fuses or batteries; (d) cosmetic damage; (e) transportation, shipping or insurance costs; or (f) costs  
of product removal, installation, set-up service adjustment or reinstallation.  
This warranty gives you specific legal rights, and you may also have other rights which vary from  
state to state.  
RadioShack Customer Relations, Dept. W, 100 Throckmorton St., Suite 600, Fort Worth, TX 76102  
We Service What We Sell  
3/97  
RadioShack  
A Division of Tandy Corporation  
Fort Worth, Texas 76102  
<ARB7121-A>  
6A7  
Printed in Singapore  
 

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