Optimus STAV-3780 User Manual

THEATER

POWER

STANDBY

5-D

STAV-3780 AUDIO/VIDEO RECEIVER

DOLBY

VIRTUAL

PRO LOGIC

SRS

Cat. No. 31-3045

Audio/Video
Receiver

STAV-3780

DOLBY SURROUND

PRO LOGIC

DSP

MODE

DSP

DIGITAL
SIGNAL

PROCESSOR

OSR

VCR

DVD/TV LD/SAT CD FM/AM PHONO

TAPE 1

DVD 5.1CH

TAPE 2
MONITOR

VOLUME

PHONES

Owner’s Manual

5X100WATT

EQUAL POWER OUTPUT

SPEAKERS

MUTINGLOUDNESS

DIRECT

TUNING
SELECT

CLASSMPX MODE MEMORY

SELECT

STATION

TUNING

TONE

L BALANCE R

MAXMIN

Please read before using this equipment.

Introducing the Optimus STAV-3780

Your Optimus STAV-3780 Audio/Video Receiver operates as the perfect
control center for your audio/video system. It combines 100 watts-per­channel of clean power with modern styling. It provides connections for
one tape deck, one VCR, two audio/video sources, a turntable, a CD
player, and two TV’s or video monitors.

Your receiver has special sound options. Dolby Pro Logic
Sound delivers movie theater sound for audio/video programs (espe­cially those encoded with Dolby Surround Sound signals). DSP Effects
creates a listening environment that simulates a concert hall, jazz club,
theater, or a d an ce hall. Virtual Dol by Surround uses TruSurround tech-
nology to provide a three-dimensional sound field using only the front
left and right speakers. 5-D Theater provides clear dynamic sound effect
by sending audio signals through the rear channel to simulate stereo
sound.

In addition, you can connect a multi-channel decoder or DVD player
with 5.1-channel output so that all five channels and the subwoofer
have independent signals.

Additional features include:

Digital-Synthesized Tuner Precisely tunes to AM and FM stations.

30 Memory Locations Let you store and recall the frequencies for up to 30 AM/FM stations.

Automatic Tuning Searches for the next available AM/FM station.

Tape Monitoring Lets you listen to the actual recording as you record, if your tape deck

has a tape-monitoring feature.

Built-In Protection Circuits Automatically turn off the receiver to help avoid power surges or short

circuit damage.

Remote Control Lets you use a single remote control for the receiver and other compati-

ble components connected to the receiver.
Note: The remote control requires two AA batteries (not su pplied).

®

Surround

We recommend you record the receiver’s serial number here. The number is on the re­ceiver’s back panel.

Serial Number:_____________________________________________

Note to the Cable TV System Installer:

This reminder is provided to call the CATV system installer’s attention to Article 820-40 of the National Electrical Code that
provides guidelines for proper grounding and, in particular, specifies that the cable ground shall be connected to the ground­ing system of the building as close to the point of cable entry as practical.



1999 Tandy Corporation.

RadioShack and Optimus are registered trademarks used by Tandy Corporation.

All Rights Reserved.

2

IMPORTANT SAFETY INSTRUCTIONS

s

(

)

This receiver is made and tested to meet exacting
safety standards. It meets both UL and FCC require­ments.

:

WARNING

hazard, do not expose this product to rain or
moisture.

To reduce the risk of fire or shock

CAUTION

RISK OF ELECTRIC SHOCK.

DO NOT OPEN.

CAUTION

ELECTRIC SHOCK, DO NOT REMOVE
COVER OR BACK. NO USER-SERVICE­ABLE PARTS INSIDE. REFER SERVICING
TO QUALIFIED PERSONNEL.

: TO REDUCE THE RISK OF

This symbol is intended to alert
you to the presence of uninsu­lated dangerous voltage within
the product’s enclosure that might
be of sufficient magnitude to con­stitute a risk of electric shock. Do
not open the product’s case.

This symbol is intended to inform
you that important operating and
maintenance instructions are

!

included in the literature accom­panying this product.

!

CAUTION

Power Lines

power lines.

Nonuse Periods

when you will not use it for extended periods.

Outdoor Antenna Grounding

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 antenna­discharge unit, connection to grounding electrodes,
and requirements for the grounding electrode. See the
example below.

NEC -- National Electrical Code

—Locate an outdoor antenna away fr om

—Unplug the receive r’s power cord

—If an outside antenna

Antenna
Lead-In
Wire

Ground Clamp

Antenna
Discharge Unit

Electric
Service
Equipment

(NEC Section 810-20)
Grounding Conductor

(NEC Section 810-21)

Grounding Clamps

Power Service Grounding
Electrode System

NECArticle 250,Part H

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 a nd
accessories. Read all the included safety and operating instructions before using your receiver.
Follow them closely, and retain them for future reference.

Heed Warnings
Cleaning

cleaning. Do not use liquid or aerosol cleaners.

Attachments

turer, as they might create a hazard.

Water and Moisture

bowl, kitchen sink, or laundry tub; in a wet basement; or near a swimming pool).

Accessories

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 recomm ended mounting
accessory.

Power Sources

label. If you are not sure of your home's power type, consult your product dealer or local power
company.

Polarization

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, con­tact your electrician to replace your obsolete outlet. Do not defeat the sa fe ty pur pose of the polar ­ized plug. If you need an extension, use a polarized cord.

Power-Cord Protection

pinched by items placed on or against them, paying particular atten tion to cords at plugs, conve ­nience receptacles, and the point where they exit from the product.

Lightning

tended and unused for long periods of time, unplug it from the wall outlet and disconnect the
antenna or cable system. This will prevent damage to the product due to lightning and power-line
surges.

Overloading

cles, as this can result in a risk of fire or electric shock.

Objects and Liquids

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.

Servicing

expose you to dangerous voltage or other hazards. Refer all serv icing to q ualified service person ­nel.

Damage Requiring Service

qualified service personnel under the following conditions:

— Follow all warnings on the product and in the oper atin g instruc tions.

— Unplug this product from the wall outlet before cleaning. Use only a damp cloth for

— Do not use attachm ents /acces sories no t reco mmen ded by the pr od uct manufac -

— Do not use this product near water (for example, near a bathtub, wash-

— Do not place this product on an unstable cart, stand, tripod, bracket, or table. The

— Move the prod uct on a cart car efully. Quick stops, excess ive fo rce, a nd

Carts

uneven surfaces may cause the product/cart to overturn.

Ventilation

able operation, and protect from overheating. Do not block or cover these open­ings, 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 ven­tilation as specified by the manufacturer.

— Slots and opening s in the cabinet provide ventilation , ensure reli-

— Operate th is product using only the power source indicated on its marking

— This product is equipped with a pola rized AC line plug (a plug having one blade

— Route po wer-supply cords so they are not likely to be walked on or

— For added protection for this pro duct during a lightning storm, or when it is left unat-

— Do not overload wall outlets, extension cords, or integral convenience recepta-

— Never pu sh objects of any kind into this product through openings, as

— Do not attempt to se rvice this product yo urself, as opening or remo ving covers ma y

— Unplug th is product from the wall outlet and refer servicing to

• 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 adjustmen t of
other controls may result in damage and will ofte n require e xtensive work by a qualified tech ni­cian to restore the product to normal operation.

• If the product has been dropped or damaged in any way.

• When the product exhibits a distinct change in performance.

Replacement Parts

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.

Safety Check

to perform safety checks to determine that the product is in proper operating condition.

Wall or Ceiling Mount

mended by the manufacturer.

— The product should be situated away from heat sources such as radiators, heat registers,

Heat

stoves, or other products (including amplifiers) that produce heat.

— When replacement parts are required, be sure the service technician uses

— Upon completion of service or repairs to this pro duct, ask the service technician

— The product sh ould be mounted to a wall or ceiling only as recom-

3

Contents

Preparing Your Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Positioning Speakers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Connecting Speakers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Connecting Program Sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Connecting the Antennas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Using One Remote Control for More than One Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Installing the Remote Control’s Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Using the AC Power Outlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Connecting to AC Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Basic Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Tuning the Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Using MPX Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Adjusting Balance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Using Headphones . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Muting the Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Loudness Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Bypassing the Sound Controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Cassette Deck/VCR Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Using the VCR/TAPE 1 and TAPE 2 MONITOR Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Monitoring a Program Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Dubbing a Cassette Tape . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Playing and Recording Video Tapes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Using Advanced Sound Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Sound Mode Adjustments (Remote Control Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Using the Remote Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Care and Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

The FCC Wants You to Know . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Index to Features by Control Name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

4

Preparing Your Receiver

Caution:

Make all the necessary connections before you plug in or turn on the receiver.

Positioning Speakers

a

L

b

Normal Listening Point

• Surround speakers generally sound
best if you position them above ear
level.

• To avoid picture interference of a
nearby TV, use magnetically shielded
speaker systems. This is particularly
important for the center speaker since
it is usually located closest to the TV.

R

Midway Point
Between Speakers

a=b

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 different locations for your speakers.

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 , o r raise
them 6 to 18 inches off the floor. You can buy speaker stands at your
local RadioShack store.

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.

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 dispersion. You can angle the speakers toward you for better
stereo effect.

To position your speakers for surround sound, place the 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 22). Place the center speaker above, below, or
behind the TV. If you place it beside the TV, the picture may not coin­cide with the sound.

Front Left
Speaker

Rear Left
Speaker

Center Speaker

Front

Listening

Area

Rear

Front Right
Speaker

Rear Right
Speaker

5

Preparing Your Receiver

Connecting Speakers

Follow these guidelines when you select
and connect speakers.

• Only connect speakers that are rated
at between 6 and 16 Ohms.

• Be sure you properly connect all
speakers.

• Do not connect two pairs of speakers
to a single set of terminals at the
same time.

• Optimus and other high-quality speak­ers have color-coded speaker termi­nals (red for positive polarity and
black for negative polarity). Use these
color-coded terminals as a guide to
help you properly connect the speak­ers to the receiver.

• Use 16-gauge (or larger) speaker wire
for all speaker connections, and con­sider possible speaker locations be­fore you decide how much speaker
wire you need.

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 steps to prepare the speaker wires.

Wire Strands

Speaker Wire

Conductor

1. Cut the speaker wires to the necessary length.

2. Separate the wires about 4 inches on each end.

3. Using a wire stripper, carefully strip about
from the end of each conductor.

4. Twist the end of each conductor to secure any loose wire strands.

Wire Strands

3

/4 inch of insulation

Setting the Impedance Selector Switch

Before proceeding to speaker connection, be sure to set the

SELECTOR

with 6- to 8-ohm impedance, set the switch to
you are using 8- to 16-ohm impedance, set it to

switch to the appropriate position. If you connect speakers

6~LESS THAN 8 W

8~16

6

position.

ΩΩΩΩ

IMPEDANCE

position. If

Preparing Your Receiver

AUDIO

IN

AUDIO

IN

Amplified
Subwoofer

Right Front Speakers

Right

Center Speaker

R

CENTER

SPEAKER

A

B

L

L

R

SURROUND

SPEAKERS

R

R

FRONT SPEAKERS

L

L

CENTER
PRE OUT

PRE OUT

SUB

WOOFER

Surround SpeakersRight Left

R

CAUTION:

A

B

Left

SPEAKER IMPEDANCE
6Ω OR 8Ω ~16Ω / SPEAKER

Left

Be sure you connect the re-

Note:

ceiver’s right and left positive (+) and
negative (–) terminals to the speaker’s
corresponding right and left positive (+)
and negative (–) terminals.

Connecting the Front Speakers

Follow these steps to connect the right speaker to the receiver’s right

FRONT SPEAKERS

1. Press open the receiver’s
the ridged or color-coded conductor’s end into the small hole.
Press the lever closed to secure the conductor.

2. Press open the receiver’s
the other conductor’s end into the small hole. Press the lever
closed to secure the conductor.

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

SPEAKERS

terminals.

left terminals.

FRONT SPEAKERS R

FRONT SPEAKERS R (–

(+) red lever and insert

) black lever and insert

FRONT

7

Preparing Your Receiver

Preparing Your Receiver

Connecting Surround-Sound Speakers

You can connect a pair of speakers to the receiver for surround-sound
programs. Follow the steps in “Connecting the Front Speakers” to con­nect the speakers to the

SURROUND SPEAKERS

terminals.

Connecting the Center Speaker

The center speaker gives additional ambience to surround sound. Fol­low the steps in “Connecting the Front Speakers” to connect the center
speaker to the

Or, if you are intending to use the amplified speaker as your center
speaker, connect
nect this jack to the audio input of your TV.

CENTER SPEAKER

CENTER PRE OUT

terminals.

to its line-level input. You can also con-

Connecting a Subwoofer Amplifier

Your receiver includes a line-level subwoofer output. Connecting a sub­woofer to your system dramatic ally 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 earthquake, the bone-jarring percussion of a
cannon, and more. To use the subwoofer output, simply connect

WOOFER PRE OUT

amplifier to which you have connected a subwoofer.
RadioShack stores sell a variety of suitable subwoofers and amplifiers.

to an amplified subwoofer’s line-level input or to an

SUB-

8

Preparing Your Receiver

Connecting
Program Sources

You can connect up to five external program sources to your receiver.

DVD 5.1CH

Turntable

INPUT

SURROUND

VIDEO OUT

TO MONITOR TV

1

VIDEO

IN IN

L
R

PHONO

R

OUT PUT

CD Player Cassette Deck Cassette Deck

IN IN IN OUT IN OUT

DVD/

TV

CD

DVD 5.1CH

FRONT

SIGNAL GND

L

R

L

L
R

CD

2

LD/

SAT

R

L

REC PLAY

REC

INPUT OUTPUT

SURROUND

VCR/TAPE1

R

L

LINE

L

R

PLAY

L

CENTER

L

WOOFER

R

L

R

R

CENTER
PRE OUT

PRE OUT

SUB

SUB

WOOFER

CONTROL

OUT

PLAY RECPLAY REC

TAPE2 MONITOR

L

R

L

LINE

REC PLAY

L
R

REC

INPUT OUTPUT

L
R

L

R

R

L

R

PLAY

Use shielded audio cables with

Note:

phono connectors for all audio connec­tions.

If you place the cassette deck di-

Note:

rectly above, below, or to the left of the
receiver, the receiver could interfere with
the cassette deck’s operation. If possi­ble, position the cassette deck to the
right or away from the receiver.

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

(right)

R

receiver’s

PHONO IN

jacks. Then connect the turntable’s ground wire to the

SIGNAL GND

terminal.

(left) and

L

Connecting a CD Player

To connect a CD player to the recei ver, connect the CD player’s left and
right output jacks to the receiver’s

and

L

R CD IN

jacks.

Connecting Cassette Decks

You can connect cassette decks to the

VCR/TAPE 1

jacks. Connect the cassette deck’s output jacks to the
or

TAPE 2 MONITOR IN PLAY

jacks to the

VCR/TAPE 1 OUT REC

jacks. Then, connect the cassette deck’s input

or

TAPE 2 MONITOR OUT REC

You can connect a third cassette deck (for playback only) to the
or

(audio) jacks.

LD/SAT

and

TAPE 2 MONITOR

VCR/TAPE 1 IN PLAY

jacks.

DVD/TV IN

9

Preparing Your Receiver

VIDEO

DVD 5.1CH

IN IN

SURROUND

VIDEO OUT

TO MONITOR TV

1

V

VIDEO

IN IN IN OUT IN OUT

SURROUND

2

INPUT

CENTER

CENTER

PRE OUT

L

PRE OUT

SUB

SUB

WOOFER

R

WOOFER

CONTROL

OUT

L
R

V

V

VIDEO

OUT

PLAY RECPLAY REC

TAPE2 MONITOR

R

L

L

R

AUDIO

REC PLAY

REC

INPUT OUTPUT

R

L

L

R

VIDEO

OUT

L
R

IN

PLAY

V

V

V

V

DVD/

PHONO

V

V

IN

VIDEO

OUT

TV

LD/

R

R

SAT

AUDIO

OUT

L

L

VCR/TAPE1

L

R

CD

DVD 5.1CH

FRONT

SIGNAL GND

R

L

R

L

V

AUDIO

OUT

L
R

If your VCR is monaural, use a Y-

Note:

adapter (available at your local Ra­dioShack store) to connect the VCR’s
audio output to both the

and R audio in-

L

puts on the receiver.

TV Monitor

DVD

DVD

LD Player

VCR

VCR

Connecting Video Sources

If you connect three video sources, such as VCRs, laser disc (LD) play­ers, or digital 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 so urce connected to

.

TAPE 1

VCR/

Connect phono cables from each video source ’s au dio outputs to the
receiver’s

VCR/TAPE 1 IN PLAY, LD/SAT IN,

phono cables from the re cei ver ’s

or

DVD/TV IN

VCR/TAPE 1 OUT REC

jacks. Then connect

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, LD/SA T VIDEO I N

video cables from the receiver’s

, or

DVD/TV VIDEO IN

VCR/TAPE 1 VIDEO OUT

jacks. Then connect
jack to the source’s

video input.

Connecting TVs/Video Monitors

You can connect either two TV’s or video monitors to the receiver. The
monitor (or TV with baseband video input) you connect to the
terminal can monitor any program you connect to the receiver’s vid eo
input jacks. Connect a video cable from the receiver’s

1 or 2 jack to the monitor’s video input.

TOR TV

VIDEO OUT TO MONI-

VIDEO OUT

10

IN IN

PHONO

DVD 5.1CH

SURROUND

VIDEO OUT

TO MONITOR TV

1

VIDEO

IN IN IN OUT IN OUT

DVD/

TV

CD

DVD 5.1CH

FRONT

SIGNAL GND

R

L

V

R

L

V

AUDIO

VIDEO

OUT

OUT

LRL

2

LD/

SAT

R

L

R

L

SURROUND

OUT

R

DVD

SURROUND

VCR/TAPE1

CENTER

OUT

SUBWOOFER

OUT

DVD

Preparing Your Receiver

INPUT

CENTER

L

WOOFER

R

CENTER

PRE OUT

PRE OUT

SUB

SUB

WOOFER

CONTROL

OUT

PLAY RECPLAY REC

TAPE2 MONITOR

L
R

Subwoofer output is obtained only

Note:

when you connect a subwoofer to the

SUBWOOFER PREOUT

jack. If you use a
passive subwoofer (without an amplifier),
subwoofer output is not obtained.

Preparing Your Receiver

DVD 5.1-Channel Inputs

The STAV-3780 accep ts both 2-channel and 5.1 -channel input for DVD
players and multi-channel decoders. Selecting the 5.1-channel mode
enables the

SURROUND L/R, CENTER

nal processing with multi-channel decoder or DVD player with 5.1­channel output.

, and

SUBWOOFER

output jacks for sig-

11

Preparing Your Receiver

Connecting the Antennas

ANTENNA

AM

FM

UNBAL

75Ω

ANTENNA

AM

FM

UNBAL

75Ω

LOOP
ANTENNA

LOOP
ANTENNA

AM Loop

Antenna

Outdoor AM Antenna

AM Loop
Antenna

In many areas, the supplied indoor AM loop and FM antennas provide
satisfactory reception.

AM Antennas

Assemble the supplied AM antenna’s base by swinging the base in the
direction of the arrow and inserting t h e an tenna’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.

Attach the antenna wires to the

AM LOOP ANTENNA

nals (upper two terminals).
Place the antenna on a flat surface and ro tate it for the best AM recep-

tion.

Notes:

• Keep the AM loop antenna connected even when you use another
indoor antenna or an outdoor AM antenna.

• Ensure that the antenna does not touch the receiver or any other
metal object.

• Do not place the antenna near a CD player, a personal computer,
or a TV set.

• If the wire between your AM loop antenna and receiver is too
short, you can add extra wire, available at your local RadioShack
store.

You can als o use an optional RadioShack shortwave antenna kit (Cat.
No. 278-758), which makes an excellent outdoor AM antenna. Connect
the outdoor AM antenna wire to the receiv er’s AM terminal, as shown.

and (ground) termi-

For the best results, use 75-ohm

Note:

coaxial cable to connect an outdoor an­tenna to the receiver.

ANTENNA

AM

LOOP
ANTENNA

FM

UNBAL

Ω

75

12

FM Antennas

Connect the supplied FM antenna to the

FM UNBAL 75

shown, then extend it.
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.

terminal as

Ω