Cat. No. 31-3039
Audio/Video
Receiver
STAV-3680
DOLBY SURROUND
P R O • L O G I C
STAV-3680 AUDIO/VIDEO RECEIVER
STAND BY
DOLBY
PRO LOGIC
VCR
TAPE 2
SFC
MODE
5-D
THEATER
OSR
TAPE 1
DVD/TV
LD/SAT
CD
TUNER PHONO MONITOR
LOUDNESS
POWER
VOLUME
BASS
BALANCE
RETURN
FM MONO CLASS
MEMORY FM/AM
SELECT
ENTER
MULTI
JOG
TREBLE
PHONES
5–CHANNEL
EQUAL POWER OUTPUT
SPEAKERS
L
R
MIN
MAX
A
B
Owner’s Manual
Please read before using this equipment.
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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
shock hazard, do not expose this product
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.
CAUTION
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).
RISK OF ELECTRIC SHOCK.
!
DO NOT OPEN.
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
: TO REDUCE THE RISK OF
ELECTRIC SHOCK, DO NOT REMOVE
COVER OR BACK. NO USER-SERVICE-
ABLE PARTS INSIDE. REFER SERVICING
TO QUALIFIED PERSONNEL.
Carts — Move the product on a cart carefully. Quick stops, excessive force, and
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.
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.
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.
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.
This symbol is intended to inform you that
important operating and maintenance in-
!
structions are included in the literature ac-
companying this system.
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
Power Lines — Locate an outdoor antenna away from
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 lines.
Nonuse Periods — Unplug the receiver’s power cord
when you will not use it for extended periods.
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.
Outdoor Antenna Grounding — If an outside an-
tenna 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 70, 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
Antenna
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.
Discharge Unit
(NEC Section 810-20)
Electric
Service
Equipment
Grounding Conductors
(NEC Section 810-21)
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.
Grounding Clamps
Power Service Grounding
Electrode System
(NEC Article 250, Part H)
Wall or Ceiling Mount — The product should be mounted to a wall or ceiling only as recommended
by the manufacturer.
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.
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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
Balance Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Loudness Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Muting the Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Using Headphones . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Tuning the Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Using FM Mono . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Cassette Deck/VCR Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Using the VCR/TAPE 1 and TAPE 2 Monitor Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Recording a Program Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Dubbing a Cassette Tape . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Playing and Recording Video Tapes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Using Advanced Sound Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Sound Mode Adjustments (Remote Control Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Using the Remote Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Returning Controls to Factory Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Care and Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
The FCC Wants You to Know . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Index to Features by Control Name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
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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 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.
• 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 surround speakers (rear) behind
or to the sides of the listening point (see “Using Advanced Sound Options” on
Page 21). Also, place the center speaker above, below, or behind the TV.
Sound might not appear to coincide with the picture if you place the center
speaker beside the TV.
TV
Front Left
Speaker
Front Right
Speaker
Center Speaker
Front
Listening
Area
Rear
Rear Left
Speaker
Rear Right
Speaker
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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.
• Be sure you properly connect all
speakers.
Follow these steps to prepare the speaker wires.
• 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
the Speakers A jacks and one set to
the Speakers B jacks.
Wire Strands
Conductor
• Optimus and other high-quality speak-
ers have color-coded speaker termi-
nals (red for positive polarity and
black for negative polarity). Use these
color-coded terminals as a guide to
help you properly connect the speak-
ers 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 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 exposed wire to secure any loose strands.
Setting the Impedance Selector Switch
Before connecting speakers, check your speaker system’s impedance (see
IMPED-
your speaker system’s specifications). Normally it is 8W. If it is, leave the
ANCE SELECTOR
8W~16W/ SPEAKER
. If your speaker system has 6W
switch set to
6
Ω
~16 /SPEAKER
.
impedance, set the switch to
Ω
CAUTION: SPEAKER IMPEADANCE
16
R
L
8
/SPEAKER
A
B
A
B
CAUTION: SEE INSTRUCT MANUAL
6
8
16 /SPEAKER
16 /SPEAKER
R
L
IMPEDANCE
SELECTOR
FRONT SPEAKERS
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6
Preparing Your Receiver
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.
Right
Front A Speakers
Front B Speakers
Left
Right
Left
Center Speaker
Center Channel
Power Amplifier
CENTER
AUDIO
IN
PRE OUT
L
R
R
PRE OUT
SUB
AUDIO
IN
L
REAR
CENTER
SPEAKER
WOOFER
SPEAKERS
R
L
A
B
A
B
Amplified
Subwoofer
R
L
FRONT SPEAKERS
Surround
Speakers
Right
Left
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 back 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 back 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 through 4 to connect the left speaker to the receiver’s left FRONT
SPEAKERS A terminals.
Repeat this entire process to connect a second pair of speakers to the FRONT
SPEAKERS B terminals.
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7
Preparing Your Receiver
Connecting Surround-Sound Speakers
You can connect a pair of speakers to the receiver’s REAR SPEAKERS terminals
for surround-sound programs. Follow the steps in “Connecting the A and B
Speakers.”
Connecting the Center Speaker
The center speaker gives additional ambience to surround sound. Connect the
center speaker to the CENTER SPEAKER terminals. Follow the steps in “Connect-
ing the A and B Speakers.”
Connecting Center Channel and Subwoofer Amplifiers
To increase the center channel’s output power, you can connect an amplifier to
the CENTER jack. Then connect the center channel speaker to the 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 re-creating the rumble of an earth-
quake, the bone-jarring percussion of a cannon, and more. To use the sub-
woofer output, simply connect it 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.
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8
Preparing Your Receiver
You can connect up to six external program sources to your receiver.
Connecting Program Sources
VIDEO
TO MONITOR TV
OUT
CONTROL
Use shielded audio cables with phono
connectors for all audio connections.
IN
OUT
OUT
IN
IN
IN
OUT
IN
VIDEO
OUT
PLAY REC
IN
IN
IN
IN
IN
L
L
L
R
R
R
LD/
SAT
VCR/
TAPE 1
DVD/
TV
TAPE2
CD
PHONO
MONITOR
SIGNAL GND
L
L
R
R
LINE
LINE
REC
PLAY
PLAY
REC
PLAY
PLAY
OUT PUT
L
L
L
R
R
R
REC
REC
OUTPUT INPUT
OUTPUT INPUT
CD
Turntable
CD Player
Cassette Deck
Cassette Deck
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.
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 Cassette Deck(s)
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 IN
(audio) or
VCR/TAPE 1 OUT
Connect the cassette deck’s output jacks to the
PLAY
jacks, and connect the cassette deck’s input jacks to the
TAPE 2 OUT REC
(audio) or
jacks.
LD/SAT IN
You can connect a third cassette deck (for playback only) to the
dio) jacks.
(au-
Connecting a CD Player
To connect a CD player to the receiver, connect the CD player’s left and right
CD
output jacks to the receiver’s
jacks.
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9
Preparing Your Receiver
Connecting Video Sources
If you connect three video sources such as VCRs, laser disc players, or DVD
(digital video disc) players to your receiver, you can use the receiver to select
each video source. You can also use the receiver to easily record from the 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.
VIDEO
TO MONITOR TV
OUT
CONTROL
IN
OUT
IN
IN
OUT
IN
VIDEO
OUT
IN
IN
IN
PLAY REC
IN
IN
OUT
IN
L
L
R
R
DVD/
TV
TAPE2
LD/
SAT
VCR/
TAPE 1
CD
PHONO
MONITOR
SIGNAL GND
L
VIDEO
AUDIO
AUDIO
OUT
AUDIO
OUT
VIDEO
OUT
VIDEO
OUT
PLAY
REC
VIDEO
IN
IN
OUT
L
L
L
R
R
R
PLAY
REC
OUTPUT INPUT
VCR
TV Monitor
LD Player
VCR
LD Player
Connect phono cables from a VCR’s audio outputs to the receiver’s VCR/TAPE 1
IN or LD/SAT IN (audio) jacks. Then connect phono cables from the receiver’s
VCR/TAPE 1 OUT (audio) jacks to the VCR’s audio input jacks.
Connect video cables from each video source’s video outputs to the receiver’s
VCR/TAPE 1 VIDEO IN or LD/SAT VIDEO IN jacks. Then connect video cables from the
receiver’s VCR/TAPE 1 VIDEO OUT jack to the VCR’s video input.
You can connect a third video source to the DVD/TV IN jacks. Connect the
source’s video output to the receiver’s DVD/TV VIDEO IN jack, and the source’s au-
dio outputs to the receiver’s DVD/TV IN (audio) jacks.
Connecting a Video Monitor
The monitor (or TV with baseband video input) you connect to the VIDEO OUT ter-
minal can monitor any source you connect to the receiver’s VCR/TAPE 1, LD/SAT,
or DVD/TV input jacks. Connect a video cable from the receiver’s VIDEO OUT TO
MONITOR TV jack to the monitor’s video input.
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10
Preparing Your Receiver
In many cities, the supplied indoor AM loop and FM antennas provide satisfac-
tory reception.
Connecting the Antennas
AM Antennas
Antenna
Tabs
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 at-
LOOP ANTENNA
tach the antenna wires to the
terminals (bottom two terminals).
Base
Place the antenna on a flat surface and rotate it for the best AM reception.
Antenna Wires
If the receiver is in a rack or on a shelf and there is no room for the AM loop an-
tenna, 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.
Antenna Wires
AM Loop Antenna
FM
UNBAL
75
• 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
You can also use a RadioShack shortwave antenna kit (Cat. No. 278-758),
which makes an excellent outdoor AM antenna. Connect the outdoor AM an-
tenna wire to the receiver’s AM terminal, as shown.
LOOP
ANTENNA
ANTENNA
Ground
Outdoor AM Antenna
FM
UNBAL
75
AM
FM Antennas
LOOP
AM Loop Antenna
ANTENNA
FM UNBAL 75
Connect the supplied FM antenna to the
Ω terminal as shown, then
ANTENNA
extend it.
Ground
FM Antenna
FM
UNBAL
75
AM
LOOP
ANTENNA
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 re-
ceiver, 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 FM
antenna to the receiver.
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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 75Ω cable.
Warning: To prevent injury, read and fol-
low all cautions and warnings that ac-
company the outdoor antenna.
Note: If your antenna has 300Ω twin-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 ca-
ble’s outer insulation to expose the cable’s shielding.
3. Fold back the outer insulation 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
Caution: The cable’s shielding should
only touch the GND terminal.
UNBAL 75Ω terminal. Twist the shielding to secure any loose wire strands,
and connect it to the
(ground) terminal.
Center Wire
FM
UNBAL
75
75Ω Coaxial Cable
Shielding
AM
LOOP
ANTENNA
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
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.
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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
jack to the re-
deck with the OSR mark (
), you can connect its
ceiver 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 re-
ceiver’s front panel.
Note: When you plug this system’s cable
CONTROL IN
component’s remote sensor is disabled.
into a component’s
jack, that
1. Connect each component to the receiver as shown in “Connecting Pro-
gram Sources” on Page 8.
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
OUT
IN
IN
OUT
2. Connect the cable supplied with the CD player, VCR, or cassette deck be-
CONTROL OUT
CON-
jack and the other component’s
tween the receiver’s
TROL IN
jack.
3. When you want to control more than one other component using the re-
Receiver
Other Component
with OSR Mark
CONTROL OUT
CONTROL IN
and
ceiver’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 (RadioShack Cat. No. 23-557).
Installing the
Remote Control’s Batteries
Cautions:
• Use only fresh batteries of the recom-
mended size and type.
• Do not mix old and new batteries, dif-
ferent types of batteries (standard,
alkaline, or rechargeable), or re-
chargeable batteries of different ca-
pacities.
1. Press and slide open the battery compartment cover.
2. Place two fresh AA batteries in the compartment as indicated by the po-
larity symbols (+ and –) marked in the compartment.
• 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.
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13
Preparing Your Receiver
Your receiver has an AC power outlet that you can use to power another elec-
tronic device, such as a turntable, cassette deck, or so on. This switched outlet
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.
CENTER
PRE OUT
L
R
MAFUFACTURED UNDER LICENSFROM DOLBY LABORATORIES
LICENSING CORPOTATION.
"DOLBY"
,
"PRO LOGICAND THE DOUBLE
•
D
SYMBOL ARE
TRADEMARKS OF DOLBY LABORATORIES LICENSING CORPOTARION.
LISTED
8778
AUDIO EQUIPMENT
44688
U
L
E
R
PRE OUT
SUB
WOOFER
L
R
CENTER
SPEAKER
REAR
SPEAKERS
CAUTION: SPEAKER IMPEADAE
16
AC 120V 60HZ
R
L
8
/SPEAK
A
B
A
CAUTION: SEE INSTRUCT MANUA
CAUTION:
DO NOT CONNECT
TV SET OR MONITOR.
6
8
16 /SPEAKER
16 /SPEAKER
B
SWITCHED
100W MAX
0.8A MAX
R
L
IMPEDANCE
SELECTOR
FRONT SPEAKERS
AC OUTLET
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 receiver’s 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.
CENTER
PRE OUT
L
R
MAFUFACTURED UNDER CENSE FROM DOLBY LABORATORIES
LICENSING CORPOTATIO
"DOLBY"
,
"PRO LOGICAND THE DOUBLE
•
D
SYMBOL ARE
TRADEMARKS OF DOLBY ABORATORIES LICENSING CORPOTARION.
LISTED
8778
AUDIO EQUIPMENT
44688
U
L
E
R
PRE OUT
SUB
WOOFER
L
R
CENTER
SPEAKER
REAR
SPEAKERS
CAUTION: SPEAKER IMPEADAE
6
AC 120V 60HZ
R
L
8
/SPEAKR
A
B
A
CAUTION: SEE INSRUCT MANUA
CAUTION:
DO NOT CONNECT
TV SET OR MONITOR.
6
8
16 SPEAKER
16 SPEAKER
B
SWITCHED
100W MAX
0.8A MAX
R
L
IMPEDANCE
SELECTOR
FRONT SPEAKERS
AC OUTLET
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14
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 MASTER 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 VOLUME 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. Aappears when SPEAKERS A is selected. Bappears
when SPEAKERS B is selected.
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,
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 23 (for the remote control) or Page
30 (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 turn off all speakers so you can listen pri-
vately with headphones.
3. Select a program source.
To tune to a radio station, see “Tuning the Radio” on Page 17.
To listen to signals from the component connected to TAPE 2 MONITOR,
press TAPE 2 MONITOR so TAPE 2appears 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
TAPE 2does not show on the display. If necessary, press TAPE 2 MONI-
TOR so TAPE 2disappears. Then press VCR/TAPE 1, DVD/TV, LD/SAT, CD,
TUNER, PHONO, or repeatedly press FUNCTION on the remote control to dis-
play the desired program source.
4. Adjust MASTER VOLUME clockwise to increase the volume or counterclock-
wise 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.
6. Adjust BALANCE to suit your listening preferences. See “Balance Control”
on Page 16.
7. Press POWER to turn off the receiver.
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15
Basic Operation
Balance Control
BALANCE
The
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
For an unusual speaker placement, adjust
as follows:
TUNER
FM/AM
to select the FM band.
1. Select
2. Press
. Then press
FM MONO
so MONOappears. The sound is monaural instead of ste-
reo, 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
so MONOdisappears from the display.
To increase the high and low ranges of sounds for improved audio at a low lis-
Loudness Control
Muting the Receiver
Using Headphones
LOUDNESS LOUD.
tening level, press
(
on the remote control) so LOUDNESSap-
LOUDNESS
pears on the display. Press
again to turn off this feature.
MUTING
To temporarily mute the sound, press
on the remote control. MUTING
MUTING
appears. Press
again to restore the audio level.
1
To listen with headphones (not supplied), insert the headphones’ /4 -inch plug
PHONES
into the receiver’s front panel
jack. To silence the speakers, press
SPEAKERS A
B
and to turn off any special sound options.
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.
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16
Basic Operation
You can tune your receiver manually or you can store stations in memory.
Tuning the Radio
Manual Tuning (Front Panel Only)
Follow these steps to manually tune to a station.
TUNER
FM/AM
to select the desired band.
1. Press
. Then press
When you select the AM or FM band, the receiver tunes to and displays
the frequency last selected in that band.
SELECT
2. Press
so FREQappears on the JOG MODEdisplay.
MULTI JOG
3. Turn
to tune the desired station.
Notes:
• TUNEDappears on the display when you tune to a strong station.
• STEREOappears on the display when the tuner is receiving FM
broadcasts.
Memory Tuning
Memory tuning lets you instantly tune to a stored station. You can store up to 30
AM or FM frequencies in three different classes—10 frequencies in each class.
Follow these steps to store a station in a memory location.
TUNER
FM/AM
to select the desired band.
1. Press
. Then press
2. Using manual tuning, select the station 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 18). This setting is also stored in memory.
MEMORY
3. Press
. MEMORYappears for 5 seconds.
• If your receiver is disconnected from
AC power for several days, it loses all
the stored frequencies.
CLASS
4. While MEMORYis on the display, press
so the class number you
MULTI JOG
want appears on the display, turn
to select the memory number
ENTER
you want, then press
to store the frequency in that memory.
The class and memory number flash, then light steadily.
SELECT
To tune to a stored station, press
so STappears on the JOG MODEdis-
MULTI JOG
play, then turn
until the desired frequency appears on the display.
When you reach the last frequency in a class (frequency number 10 moving for-
ward or number 1 moving in reverse), the receiver automatically moves to the
next class of memory.
STATION
You can also use
on the remote control to select a station in mem-
ory. See “Using the Remote Control” on Page 23.
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17
Basic Operation
Using FM Mono
FM MONO
To receive FM stations in stereo, press
so MONOdisappears from the
display. STEREOappears on the display when the tuner receives an FM broad-
cast in stereo.
FM MONO
You can improve the reception of weak FM stations by pressing
so
MONOappears. This reduces noise while you listen to a weak FM station, but
you get monaural instead of stereo sound.
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18
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 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 se-
lected source when you press TAPE 2 MONITOR.
To return to the previous source, press TAPE 2 MONITOR again so TAPE 2disap-
pears.
Notes:
• If you press TAPE 2 MONITOR when the cassette deck is neither playing nor
recording, the receiver mutes the current audio source. To hear the audio
source, press TAPE 2 MONITOR so TAPE 2disappears 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 program source you select—VCR/TAPE 1, TAPE 2
MONITOR, DVD/TV, LD/SAT, CD, TUNER, or PHONO—to the VCR/TAPE 1 OUT (audio)
and TAPE 2 MONITOR REC jacks.
Recording a Program Source
Dubbing a Cassette Tape
The VOLUME, BALANCE and tone controls do not affect 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
jacks as the recording deck. Then press TAPE 2 MONITOR so TAPE 2appears
on the display to hear the recording. See “Using the VCR/TAPE 1 and TAPE 2
Monitor Buttons.
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19
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
audio and video jacks, you can copy video cassette tapes from one
VCR to another and monitor the dubbing process.
Playing a Video Cassette Tape
VCR/TAPE 1
To play a video tape, load the tape into the VCR connected to either
LD/SAT
VCR/TAPE 1
LD/SAT
or ) that corresponds to the jack
or
. Press the button (
the VCR is connected to. VCRor LD/SATappears on the display. Follow the
VCR’s instructions to begin playback. If you connected a monitor to the re-
TO MONITOR TV
ceiver’s
jack, you can view the program on that monitor.
Copying a Video Cassette Tape
Follow these steps to copy a video tape from one VCR to another.
LD/SAT
1. Load the tape you want to copy into a VCR connected to
.
2. Load a blank tape (or one you want to record over) into a VCR connected
VCR/TAPE 1
to the
jacks.
LD/SAT
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.
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20
Using Advanced Sound Options
Your receiver has three special sound options: Dolby Pro Logic Surround, SFC
modes (studio and arena), and 5-D Theater. These special options enhance the
sound you hear from 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, press DOLBY PRO LOGIC. For SFC effects
or 5-D Theater, repeatedly press SFC MODE or 5-D THEATER until the desired op-
tion appears on the display. For Dolby 3CH Logic, repeatedly press the remote
control’s C. MODE button until 3CHLOGICappears on the display.
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 ap-
propriate speakers, making you feel like you are really there. You can find hun-
dreds 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 or-
dinary 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 speak-
ers.
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.
Arena Effect
Arena Effect is ideal for sources such as live performances. The front speakers
output the music, and the rear speakers output the sounds and applause of the
audience.
5-D Theater
5-D Theater provides clearer and more dynamic sound effects by outputting au-
dio signals through the rear channel to simulate the stereo sound, compared
with a standard surround system which provides only monaural signals to the
rear speakers. Select 5-D PRO LOGICfor the sources encoded with Dolby
Pro Logic, and select 5-DSurroundfor normal stereo sources.
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21
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
AUDIO/SURROUND
only when you select Dolby Pro Logic Surround Sound. Slide
SURROUND
C. MODE
on the remote
on the remote control to
. Each time you press
Note: If you do not use a center speaker,
the monaural signals are reproduced
only if you select PHANTOM.
control, the setting changes, and the receiver displays: NORMAL, WIDE,
PHANTOM, or 3CHLOGIC.
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.
3CHLOGIC — Select this mode if you do not have rear speakers. The rear
channel’s sound is sent to 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. See “Center Level” and “Rear Level.”
To activate the test tone, select one of the surround sound modes (except
AUDIO/SURROUND
AUDIO
TEST
. Then press
PHANTOM) and set
on the remote to
TONE
. The receiver sounds a 2-second tone from the front left, center, front right,
and rear speakers, in sequence.
Notes:
• The center test tone does not sound if you select PHANTOM surround
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
AUDIO/SURROUND
AUDIO
– CENTER LEVEL +
. Then press to adjust the cen-
Slide
to
Note: Use the VOLUME control to adjust
the overall sound level.
ter speaker sound level.
Rear Level
AUDIO SURROUND
SURROUND
– REAR +
. Then press to adjust the rear
Slide
/
to
speakers’ sound level.
CENTER
REAR LEVEL
work only for the sound system that supports the
Both
and
REAR LEVEL
center or rear speakers. For example,
Logic.
does not work for Dolby 3CH
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22
Using the Remote Control
The remote control works up to a distance of about 23 feet, and within a 30-de-
gree 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
Some buttons on the remote control have two functions. Set the AUDIO/SUR-
ROUND switch to AUDIO to activate the function printed in green on the remote
control’s panel. Set the switch to SURROUND to use the function printed in gold.
For example, the button marked C. MODE and TEST TONE operates as the center
mode adjust when you set the switch to SURROUND and as the test tone function
when you set the switch to AUDIO.
Receiver/Amplifier Section
+
–
MASTER VOLUME
Adjusts the system’s volume. See Page 14.
C. MODE
AUDIO/
Selects among the four center mode settings with
SURROUND set to SURROUND. See Page 21.
TEST TONE
AUDIO/SURROUND
Sounds test tones from each speaker with
set to AUDIO. See Page 21.
–
–
+
CENTER
AU-
Controls the relative volume of the center speaker with
DIO/SURROUND set to AUDIO. See Page 21.
SURROUND
AUDIO
+
DISC
REAR
AUDIO/
Controls the relative volume of the rear speakers with
SURROUND set to SURROUND. See Page 21.
CD
ASMS
RANDOM
BEST
SFC MODE
Selects between Studio Effect or Arena Effect, or turns the
SFC mode off. See Page 20.
TAPE
DECK2
DECK1
5-D THEATER
Selects between 5-D Pro Logic or 5-D Surround, or turns the
5-D function off. See Page 20.
STATION
CLASS FM MONO
REAR
CENTER
LEVEL
C.MODE
TEST
TONE
PRO LOGIC
LOUD.
Turns the Dolby Pro Logic Surround on and off. See Page 20.
Ρεχειϖερ/
Αµπλιφιερ
Σεχτιον
PRO
LOGIC
5-D
SFC
MUTINTG
THEATER
MODE
Boosts/cuts high and low frequency sounds at low listening
levels. See Page 15.
TAPE2
LOUD
FUNCTION MONITOR
POEWR
MASTER
VOLUME
RECEIVER
CD
TAPE
TAPE 2 MONITOR
FUNCTION
Switches the receiver to monitor the source connected to the
TAPE 2 MONITOR jacks. See Page 18.
STAV-3680 AUDIO/VIDEO
OSR
SYSTEM REMOTE
Selects a program source (VCR/Tape 1, DVD/TV, LD/SAT,
CD, tuner, or phono). Repeatedly press FUNCTION until the
display shows your desired program source. See Page 14.
RECEIVER POWER
MUTING
Turns the receiver on and off. See Page 14.
Silences the receiver. Press again to restore the sound to its
previous level. See Page 15.
CLASS
AUDIO/SURROUND
Selects the receiver’s memory class with
set to AUDIO. See Page 16.
FM MONO
STATION
AUDIO/SURROUND
set to
Selects the FM reception mode with
AUDIO. See Page 17.
Press to tune to the next higher or lower memory location
with AUDIO/SURROUND set to AUDIO. See Page 16.
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23
Using the Remote Control
CD Player Section
Before operation:
• Press CD to select the CD player operation.
• Set AUDIO/SURROUND to AUDIO.
• 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 that have
the CONTROL IN/OUT feature).
|
and
|
Returns to the beginning of the current track/chapter or ad-
vances to the next track/chapter.
DISC
Selects discs in a multi-play CD changer.
Note: DISC does not work with all CD players.
Starts playback.
SURROUND
DISC
AUDIO
CD
CD Player
Section
ASMS
RANDOM
BEST
Stops playback.
Tape
Section
TAPE
DECK2
DECK1
Pauses playback.
STATION
CLASS FM MONO
RANDOM
BEST
Plays the tracks on a CD in random order.
REAR
CENTER
LEVEL
C.MODE
TEST
TONE
PRO
5-D
SFC
Selects your favorite programs. During play of your favorite
program, press BEST. The unit memorizes the track number
then plays only the memorized tracks later.
MUTINTG
LOGIC
THEATER
MODE
TAPE2
MONITOR
LOUD
FUNCTION
RECEIVER
POEWR
CD
MASTER
VOLUME
TAPE
STAV-3680 AUDIO/VIDEO
OSR
Tape Section
SYSTEM REMOTE
Before operation:
• Select the desired equipment (VCR/TAPE 1 or TAPE 2 MONITOR).
• Set AUDIO/SURROUND to AUDIO.
• For a dual cassette deck, select DECK 1 or DECK 2. If you use a single cas-
sette deck, press DECK 2.
• You must connect the tape deck/player to both your receiver’s CONTROL
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.
Pauses playback.
Stops playback.
and
Lets you rapidly scan a tape/CD either forward or backward.
DECK 1/DECK 2
Selects Deck 1 or Deck 2 when you use a dual cassette deck
with AUDIO/VCR set to AUDIO.
TAPE POWER
Turns the connected cassette deck on and off.
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24
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
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 Static discharge has affected control.
to button presses.
Unplug the power cord, then plug it in again.
(If static electricity is a problem, use the re-
mote control whenever possible.)
No sound.
Incorrect connections.
Check and correct the connections.
Press MUTING.
The mute function is activated.
The volume is turned down.
Turn up the volume.
Speaker wires are disconnected.
Neither set of speakers is selected.
Tape 2 monitor function is engaged.
Connect the speaker wires.
Press in SPEAKERS A or B.
Press TAPE 2 MONITOR so TAPE 2disap-
pears 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.
Correct the connections.
Tune to a stronger station.
Connect the antenna.
High noise level.
Station not correctly tuned.
Antenna not connected.
FM antenna still coiled or is not point-
ing in the correct direction.
Stretch both ends of the antenna taut and re-
position the antenna.
AM loop antenna not pointing in the
correct direction.
Adjust the AM loop antenna.
Noise is coming from another electri-
cal appliance.
Try using an AC line noise filter to reduce the
noise.
Cannot make copies of video
tapes.
Tapes are protected by a copy restric-
tion method.
You cannot make a usable copy.
Video connections are incorrect.
Check and correct the connections.
Remote does not control cas- Cassette deck or CD player not com-
This feature works only with Optimus Profes-
sional Series components.
sette deck or CD player.
patible.
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 receiver to return the controls to the following settings.
Returning Controls to
Factory Defaults
Tape 2 Monitor Off
Source
TUNER
On
Speakers A
FM or AM (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
Loudness
Muting
Off
Off
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25
Care and Maintenance
Your STAV-3680 Audio/Video 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 re-
ceiver.
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 de-
stroy 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.
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26
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.
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27
Specifications
Amplifier
Front Channel Average Power Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 Watts per Channel into 8 Ohms
From 20 to 20,000 Hz,
With No More than 0.09% Total Harmonic Distortion
Measured Pursuant to the Federal Trade Commission’s
Trade Regulation Rule on Amplifier Output Power Claims
Front Channel Surround Power Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 Watts per Channel
Center Channel Surround Power Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 Watts
Continuous Rear Surround Power Output . . . . . . . . . . . . . . . . . . . . . . . . . 100 Watts per Channel (1 kHz, 0.8% THD, 8 Ohms)
Input Sensitivity/Impedance
Phono . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.8 mV/47 kOhms
CD, LD, 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, VCR/TAPE 1, TAPE 2 Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Hz to 100,000 Hz +0/–3 dB
Output Level/Impedance
VCR/TAPE 1 REC, Tape 2 Monitor REC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 mV/2.2 kOhms
Tone Controls
Bass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±9 dB (100 Hz)
Treble . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±9 dB (10 kHz)
Loudness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +8 dB/+6 dB (100 Hz/10 kHz)
Signal-to-Noise Ratio (IHF, Short Circuited, A Network)
Phono . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 dB
CD, LD, VCR/TAPE 1, Tape 2 Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 dB
Signal-to-Noise Ratio (EIA, at 1 Watt, 1 kHz)
Phono . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . 75 dB
CD, LD, VCR/TAPE 1, Tape 2 Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 dB
Video Section
Input Sensitivity/Impedance VCR/TAPE 1, LD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Hz to 7MHz +0/–3 dB
Signal-to-Noise Ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 dB
Crosstalk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 dB
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28
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260 Watts, 360 VA (UL)
AC Outlet Ratings Switched . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Total 100 Watts (0.8 Amps) Maximum
Dimensions (HWD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1/8 × 16 9/16 × 14 3/4 Inches
(155 × 420 × 374 mm)
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 lb 1 oz
(9.1 kg)
Specifications are typical; individual units might vary. Specifications are subject to change and improvement without notice.
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29
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 23.
Control
See Page
5-D THEATER
21
16
BALANCE
BASS
15
CD
15
CLASS
17
DOLBY PRO LOGIC
DVD/TV
21
15
FM/AM
17
FM MONO
LD/SAT
18
15
LOUDNESS
MEMORY
MULTI JOG
PHONES
16
17
17
16
PHONO
15
POWER
15
RETURN
25
SELECT
17
SFC MODE
SPEAKERS A and B
TAPE 2 MONITOR
TREBLE
21
15
15, 19
15
TUNER
16
TUNING
17, 24
15, 19
15
VCR/TAPE 1
MASTER VOLUME
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30
Notes
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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
<ARB7118-A>
6A7
Printed in Malaysia
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