Optimus STAV-3790 User Manual

31-3046.fm Page 1 Monday, January 29, 2001 12:43 PM

Cat. No. 31-3046

Audio/Video
Receiver

STAV-3790

STANDBY

POWER

PHONES

STAV-3790 AUDIO/VIDEO RECEIVER

MPX

STATION

TUNING

MODE

TUNING
SELECT

CLASS MEMORY

DSP

DIGITAL
SIGNAL

PROCESSOR

SPEAKERS BASS

B

A

VCR DVD/LD TV/SAT VIDEO CD FM/AM MD/TAPE 1

DVD 5.1CH

TREBLE

OSR

SIGNAL
SELECT

DIRECTLOUDNESS

TAPE 2

MONITOR

DSP

MODE

MIDNIGHT

MODE

VIDEO
INPUT

VOLUME

UPDOWN

VIDEO L AUDIO R

Owner’s Manual

Please read before using this equipment.

31-3046.fm Page 2 Monday, January 29, 2001 12:43 PM

Introducing the Optimus STAV-3790

Your Optimus STAV-3790 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, an additional tape
deck or audio source, a CD player, and a video monitor.

Your receiver also has special sound options. Dolby Digital produces the
digitally-processed true lifelike sound in every channel including sub­woofer. Dolby Pro Logic® Surround 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 dance hall.

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

Midnight Listening Mode Lets you enjoy the quality surround sound even at low volumes without

disturbing others.

Optical Digital Output Lets you directly output the digital source signals to a digital recording

device, such as MD, DAT, or CD-R.

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 supplied).

We recommend you record the receiv er’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

s

(

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31-3046.fm Page 3 Monday, January 29, 2001 12:43 PM

IMPORTANT SAFETY INSTRUCTIONS

This receiver is made and te sted to me et exacting safety
standards. It meets both UL and FCC requirements

To reduce the risk of fire or shock

WARNING

:

.

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

CAUTION

RISK OF ELECTRIC SHOCK.

DO NOT OPEN.

CAUTION

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

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
Powe r Li nes

—Locate an outdoor antenna away from

power lines.

Nonuse Periods

—Unplug the receiver’s power cord

when you will not use it for extended periods.

Outdoor Antenna Grounding

—If an outside antenna
or cable system is connected to the receiver, ground the
antenna or cable system so as to provide some protec­tion against voltage surges and built-up static charges.
Article 810 of the National Electrical Code, ANSI/NFPA
80, provides information about proper grounding of the
mast and supporting structure, grounding of the lead-in
wire to an antenna discharge unit, size of grounding
conductors, location of antenna-discharge unit, connec­tion to grounding electrodes, and requirements for the
grounding electrode. See the example below.

Ground Clamp

Electric
Service
Equipment

Grounding Clamps

Power Service Grounding

NEC -- National Electrical Code

Electrode System

NECArticle 250,Part H

!

Antenna
Lead-In
Wire

Antenna
Discharge Unit
(NEC Section 810-20)

Grounding Conductor
(NEC Section 810-21)

Careful attention is devoted to quality standards in the manuf acture of y our receiver, and saf ety 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 oper ating instructions bef ore using y our receiv er . F ol­low them closely, and retain them for future reference.

Heed Warnings
Cleaning

— Follow all wa rnings on the product and in the operating instructions.

— 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.

Water and Moisture

— Do not use this product near water (f or exampl e, near a bathtub , w ashbowl,

kitchen sink, or laundry tub; in a wet basement; or near a swimming po ol).

Accessories

— Do not place this product on an unstable cart, stand, tripod, bracket, or tabl e. The
product may f all, cau sing serious inju ry to a child or adu lt, a nd serious damage t o the prod uct. U se
only with a car t, s ta nd, tripod, bracket, or table recommended by the manufacturer or s ol d with the
product. Follow the man ufacturer's instructions f or mounting, and use a recommende d mounting ac­cessory.

— Move the product on a cart carefully. Quick stops, excessive force, and

Carts

uneven surfaces may cause the product/cart to overturn.

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

Power Sources

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 o ther similar surf ace. Do
not place the product in a built-in bookcase or rack unless it provi des pro per ven­tilation as specified by the manufacturer.

— 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 powe r com pan y.

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, con­tact your electrician to replace your obsolete outlet. Do not defeat the safety purpose of the polar­ized plug. If you need an extension, use a polarized cord.

Power-Cord Protection

— Route power-supply cords so they are not likely to be walked on or
pinched by items placed on or against them, paying particular attention to cords at plugs, conve­nience 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 unat­tended and unused f or long periods of time , unp lug it fr om the w all outlet and disconn ect the ante n­na or cable system. This will pre v ent damage to the product due to l ightning and po we r-line surges .

Overloading

— Do not overload wall outle ts, e xt ension cords , or integr al con v enience receptacles ,

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

Objects and Liquids

— Never push object s of an y kind into th is product th rough openings , as the y
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

— 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 person­nel.

Damage Requiring Service

— Unplug this product from the wall o utlet and ref e r servicing to qual-

ified service personnel under the following condi tions:

• 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 cov ered b y the ope rating in structions, as an improper a djustment of other
controls may result in damage and will often require extensive work by a qualified technician to
restore the product to normal operation.

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

• When the produ ct exhibits a distinct change in performance.

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.

Safety Check

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

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

Wall or Ceiling Mount

— The product should be mounted to a wall or ceiling only as recommended

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.

3

31-3046.fm Page 4 Monday, January 29, 2001 12:43 PM

Contents

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

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

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

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

Connecting the Antennas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Using One Remote Control for More than One Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Installing the Remote Control’s Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Using the AC Power Outlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Connecting to AC Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Initial Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Basic Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Basic Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Tuning the Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Using MPX MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Using Headphones . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Muting the Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Loudness Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Bypassing the Sound Controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Adjusting the Display Brightness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Switching Analog/Digital Signal Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Using ATT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Cassette Deck/VCR Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Using the MD/TAPE 1 and TAPE 2 MONITOR Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Monitoring a Program Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Dubbing a Cassette Tape . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Playing and Recording Video Tapes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Using Advanced Sound Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Adjustment Using Test Tone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Dolby Digital Playback. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

DVD 5.1-Channel Playback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Using the Midnight Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Program Format Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Using the Remote Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Care and Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

The FCC Wants You to Know . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Index to Features by Control Name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

4

a

e

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Preparing Your Receiver

Caution:

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

Positioning Speakers

a

L

b

b

Person in Listening Area

Normal Listening Point

• 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 par­ticularly important for the center
speaker since it is usually located
closest to the TV.

R

Halfway Point

Midway Point

Between Speak

Between Speakers

a=b

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, or 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 26). Also, 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.

You can also compensate the speaker positioning by adjusting the con­trol settings for the front, center, or subwoofer speakers. See “Initial
Setup” on Page 17.

Front Left
Speaker

Rear Left
Speaker

Center Speaker

Front

Listening

Area

Rear

Front Right
Speaker

Rear Right
Speaker

5

d

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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 color­coded 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 Stran

Wire Strands

Conductor

Speaker Wire

Wire Strands

Conductor

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 3/4 inch of insulation
from the end of each conductor.

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

Wire Strands

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

position.

ΩΩΩΩ

8~16

A

B

R

FRONT SPEAKERS

CENTER

SPEAKER

L

LR

LR

SURROUND
SPEAKERS

A

B

CAUTION:

CAUTION:

IMPEDANCE SELECTOR

SPEAKER IMPEDANCE
6 OR 8 ~16 / SPEAKER

SEE INSTRUCTION
MANUAL

8~16 / SPEAKER

6~LESS THAN 8 /SPEAKER

IMPEDANCE

position. If

6

31-3046.fm Page 7 Monday, January 29, 2001 12:43 PM

Preparing Your Receiver

AUDIO

IN

AUDIO

IN

Amplified
Subwoofer

Right

Front Speakers
Center Speaker

R

A

B

R

FRONT SPEAKERS

CENTER
PREOUT

SUB
WOOFER
PREOUT

CENTER

SPEAKER

SURROUND
SPEAKERS

Surround Speakers

Left

L

A

B

L

CAUTION:

SPEAKER IMPEDANCE
6 OR 8 ~16 / SPEAKER

LR

LR

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

Note: You can connect two sets of front speakers to
but only A speaker terminals are active when you use the surround
sound system. If you connect only one set of front speakers, be sure to
connect them to the A terminals.

terminals.

left terminals.

FRONT SPEAKERS R

FRONT SPEAKERS R (–

(+) red lever and insert

) black lever and insert

FRONT

and B terminals,

A

7

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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 “Preparing Your Receiver” on Page 7 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 “Preparing Y our Receiver” on Pag e 7 to connect the cen­ter speaker to the

CENTER SPEAKER

terminals.

Or, if you prefer to use the amplified speaker as your center speaker,
connect

CENTER PRE OUT

to its line-level input. You can also connect this

jack to the audio input of your TV.

Connecting a Subwoofer Amplifier

Your receiver includes a line-level subwoofer output. Connecting a sub­woofer to your system dramatically extends bass response for incredible
richness and depth. When you listen to surround-sound programs, a
subwoofer enhances your home theater experience by realistically re­creating the rumble of an earthquake, the bone-jarring percussion of a
cannon, and more. To use the subwoofer output, connect

PRE OUT

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

which you have connected a subwoofer.

SUBWOOFER

RadioShack stores sell a variety of suitable subwoofers and amplifiers.

8

MD Recorder

CD Player

Cassette Deck

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Preparing Your Receiver

Connecting
Program Sources

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

DVD 5.1 CH

SURROUND

L

R

L

R

L

REC PLAY

REC

INPUT OUTPUT

MD

INPUT

L

R CENTER
IN INOUT

PLAY

MD/TAPE 1

R

LINE

L

R

PLAY

SUBWOOFER

REC

L

R

L

R

TO
MONITOR
TV

CONTROL

OUT IN

IN

PLAY

CD TAPE 2 MONITOR

L

R

R

L

OUT PUT

L
R

VIDEO

OUT

REC

CD

IN IN

IN

TV/

SAT

R

L

INOUT

DVD/

LD

DVD 5.1 CH

FRONT

R

IN

IN OUT

VCR

L

R

L

LINE

REC PLAY

L
R

REC

PLAY

INPUT OUTPUT

OUT

VIDEO

L

R

L

R

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 CD Player

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

R CD IN

jacks.

Connecting Cassette Decks

You can connect cassette decks to the

MD/TAPE 1

Connect the cassette deck’s output jacks to the

MONITOR IN PLAY
MD/TAPE 1 OUT REC

jacks, and connect the cassette deck’s input jacks to the

or

TAPE 2 MONITOR OUT REC

and

MD/TAPE 1 IN PLAY

jacks.

TAPE 2 MONITOR

or

jacks.

TAPE 2

Connecting MD Recorder

To connect a MD recorder to the receiver, connect the MD recorder’s left
and right output jacks to the receiver’s L and
and connect the MD recorder’s input jacks to the

R MD/TAPE 1 IN PLAY

MD/TAPE 1 OUT REC

jacks.
You can also use the fiber-optic cable (not supplied) or digital coaxial

cable (not supplied) to connect the digital output jack of the CD player
or MD recorder (for playback only) to the

DIGITAL IN OPT 1 or 2

See “Digital Connections” on Page 12.

or

jacks

COAX

jack.

9

31-3046.fm Page 10 Monday, January 29, 2001 12:43 PM

Preparing Your Receiver

Note: If you have a turntable with magnetic cartridge and want to con­nect it to the STAV-3790, you need to connect a pre-amplifier between
the turntable and the receiver. Some turntables have a switchable built­in amplifier: if your turntable has this feature, switch it to preamp
mode. Connect the output of the pre-amplifier to any unused audio
input jacks (

MD/TAPE1, CD, TAPE2 MONITOR, TV/SAT, DVD/LD

, or

VCR

).

Connecting Video Sources

DVD 5.1 CH

SURROUND

L

INPUT

L

SUBWOOFER

R CENTER
IN INOUT

CONTROL

OUT IN

TO
MONITOR
TV

VIDEO

OUT

IN IN

IN

IN

IN

OUT

VIDEO

INOUT

IN OUT

L

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.

R

REC

PLAY

VIDEO

MD/TAPE 1

V

IN

TV

V

PLAY

CD TAPE 2 MONITOR

V

V

VIDEO

OUT

L
R

L

R

AUDIO

SAT

REC

OUT

TV/

DVD/

SAT

LD

DVD 5.1 CH

FRONT

R

L

L

R

L

AUDIO

OUT

R

L
R

DVD

VCR

V

V

VIDEO

OUT

R

R

L

L

L

AUDIO

REC PLAY

L

R

REC

PLAY

INPUT OUTPUT

L

R

VIDEO

OUT

IN

VCR

R

R

DVDSAT

V

V

V

V

VCR

If you connect three video sources, such as VCRs, laser disc (LD) play­ers, digital video disc (DVD) players, or satellite receivers to your
receiver, you can use the receiver to select each video source. You can
also use the receiver to record from these video sources to the source
connected to

VCR

.

10

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

VCR IN, DVD/LD IN

from the receiver’s

, or

VCR OUT

TV/SAT IN

jacks. Then connect phono cables

jacks to the source’s audio input jacks.

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

VCR VIDEO IN, DVD/LD VIDEO IN

nect video cables from the receiver’s

, or

TV/SAT VIDEO IN

VCR VIDEO OUT

jacks. Then con-

jack to the source’s

video input.
You can also use the fiber optic cable (not supplied) or digital coaxial

cable (not supplied) to connect the digital output jack of the DVD player
to the

DIGITAL IN OPT1, 2 or COAX

jack. See “Digital Connections” on

Page 12.

DVD

31-3046.fm Page 11 Monday, January 29, 2001 12:43 PM

Preparing Your Receiver

Connecting a Camcorder

You can connect the camcorder (or other audio/video device) to the
front panel

VIDEO INPUT

with plugs that fit the receiver’s jacks and the camcorder’s jacks for this
connection.

Insert the plugs at one end of the cable into the VIDEO INPUT jacks on
the receiver’s front panel. Then insert the plugs at the other end of the
cable into the audio/video out jacks on your camcorder or other audio/
video source. Be sure to connect video to video and audio to audio (use
the plug’s color code as a guide).

Connecting a Video Monitor

jacks. You need a stereo A/V cable (not supplied)

The monitor (or TV with baseband video input) you connect to the

MONITOR TV

receiver’s
the receiver’s

terminal can monitor any program you connect to the

VCR IN, DVD/LD IN

, or

VIDEO OUT TO MONITOR TV

TV/SAT IN

jacks. Connect a video cable from

jack to the monitor’s video input.

TO

DVD 5.1-Channel Inputs

The receiver accepts 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.

DVD 5.1 CH

INPUT

SURROUND

L

SUBWOOFER

R CENTER
IN INOUT

L

R

REC

PLAY

MD/TAPE 1

R

L

, and

TO
MONITOR
TV

CONTROL

OUT IN

IN

PLAY

CD TAPE 2 MONITOR

V

SUBWOOFER

VIDEO

OUT

IN IN

IN

TV/

REC

SAT

DVD 5.1 CH

R

L

output jacks for sig-

IN

OUT

VIDEO

INOUT

IN OUT

L

DVD/

FRONT

LD

R

VCR

R

L

SURROUND

OUT

L
R

SUBWOOFER

OUT

CENTER

OUT

VIDEO

OUT

DVD

R

L

V

AUDIO

OUT

L
R

11

31-3046.fm Page 12 Monday, January 29, 2001 12:43 PM

Preparing Your Receiver

Notes:

• You must remove the DIGITAL IN OPT
1 or 2 jack’s rubber cover in order to
connect to either jack.

• Keep the cover in place when you are
not using either jack.

Digital Connections

You can connect up to three digital output devices to your receiver. Two
inputs use the fiber-optic cable, and one uses coaxial digital audio
cable.

DIGITAL

IN

PCM/

OPT

1

OPT

2

PCM/

COAX

If you are connecting a LD or DVD

Note:

player with AC-3 RF, you need a sepa­rate RF demodulator (not supplied). For
details, see the manual provided with the
RF demodulator.

DIGITAL

OUT

OPTICAL

CD Player

CD

DIGITAL

OUT

COAXIAL

DVD

DVD

DIGITAL

OUT

OPTICAL

MD

MD Recorder

Using the appropriate cable, make connections between the digital out­put jack of your device and the digital input jack on the receiver.

The digital input jacks are assigned to the following function at the fac­tory. For example, when you select the CD function, the

OPT 1

jack input

activates.

: CD player

OPT 1

: MD recorder

OPT 2

: DVD player

COAX

You can change this arrangement to suit your needs. See “ Initial Setup”
on Page 17.

12

31-3046.fm Page 13 Monday, January 29, 2001 12:43 PM

Preparing Your Receiver

Connecting the Antennas

Base

Antenna
Wires

Antenna
Wires

AM Loop
Antenna

Outdoor AM Antenna

FM
UNBAL

ANTENNA

AM
LOOP
ANTENNA

75

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 the antenna’s bottom tabs into the
base’s slot. If the receiver is in a rack or on a shelf and there is no room
for the AM loop antenna, use two screws (not supplied) to mount the
base on the wall or another location.

Attach the antenna wires to the

AM LOOP ANTENNA

nals (upper two terminals).
Place the antenna on a flat surface and rotate 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.

and (ground) termi-

AM Loop
Antenna

FM
UNBAL

For the best results, use 75-ohm

Note:

ANTENNA

AM
LOOP
ANTENNA

75

coaxial cable to connect an outdoor an­tenna to the receiver.

ANTENNA

FM
UNBAL

75

LOOP
ANTENNA

AM

You can also 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 receiver’s AM terminal.

FM Antennas

Connect the supplied FM antenna to the

FM UNBAL 75

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, then

Ω

13

31-3046.fm Page 14 Monday, January 29, 2001 12:43 PM

Preparing Your Receiver

Warning:

To prevent injury, read and fol­low all cautions and warnings that ac­company the outdoor antenna.

Caution:

The cable’s shielding should
only touch the terminal.

For the best radio reception, use an outdoor antenna. Follow these
steps to connect an outdoor FM antenna to the receiver using 75Ω coax­ial cable.

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
terminal.

Ω

75

FM UNBAL

2. With a stripping tool, remove about 11/2 inches of the outdoor

antenna cable’s outer insulation to expose the cable’s shielding.

3. Fold back the shielding from the inner insulation.

4. Remove about 1 inch of the inner insulation from around the cen-

ter wire.

5. Pull the shielding to one side. Connect the center wire to the

receiver’s

FM UNBAL 75

loose wire strands, and connect it to the

Outer Insulation

terminal. Twist the shielding to secure any

Ω

terminal.

FM UNBAL 75

Inner Insulation

Center Wire

Shielding

Ω

Outdoor FM Antenna

Shielding

Cente

Wire

r

FM
UNBAL

ANTENNA

AM
LOOP
ANTENNA

75

Note: Grounding is not necessary for reception, but we recommend it
for better FM reception and to avoid damage from lightning when you
use an outdoor FM antenna. Use a separate piece of thick polyvinyl
insulated wire to connect the

terminal to the building’s power ser-

vice grounding electrode system.
Warning: Never connect a wire to a gas pipe for grounding since sparks

might ignite the gas.

14

31-3046.fm Page 15 Monday, January 29, 2001 12:43 PM

Preparing Your Receiver

Using One Remote Control
for More than One Unit

When you plug the cable into a

Note:

component’s

CONTROL IN

jack, that com­ponent’s remote sensor does not func­tion.

CONTROL

OUT

Receiver

Remote To the CONTROL IN jack
Control of Another Component

CONTROL

IN

OUT

Other Component
with OSR Mark

having the OSR Mark

Installing the
Remote Control’s Batteries

If you also have an Optimus professional series CD player, VCR, or cas­sette deck with the OSR mark ( ), you can connect its

CONTROL IN

jack
to the receiver so you can control all of your equipment with a single
remote control. You can also use the other component’s remote control
by pointing it at the receiver’s front panel.

1. Connect each component to the receiver as shown in “Connecting
Program Sources” on Page 9.

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.

2. Connect the cable supplied with the CD player, VCR, or cassette
deck to the receiver’s

CONTROL IN

jack.

CONTROL OUT

jack and the other component’s

3. When you want to control more than one other component using
the receiver’s remote control, daisy-chain the

CONTROL IN

connections as shown.

CONTROL OUT

and

Your remote control requires two AA batteries (not included) for power.
For the best operation and longest life, we recommend alkaline batter­ies, available at your local RadioShack store.

Cautions:

• Use only fresh batteries of the required
size and recommended type.

• Always remove old or weak batteries.
Batteries can leak chemicals that can
damage electronic circuits.

If the remote’s range is reduced,

Note:

replace the batteries.

(

9

9

(

1. Press and slide open the battery compartment cover.

2. Place two fresh AA batteries in the compartment as indicated by
the polarity symbols (+ and –) marked in the compartment.

3. Replace the battery compartment cover.

15

31-3046.fm Page 16 Monday, January 29, 2001 12:43 PM

Preparing Your Receiver

Using the AC Power Outlet

Caution:

high power consumption, such as a
heater, iron, monitor, or TV, to this AC
outlet. Doing so can cause a risk of over­heating and fire, and could damage the
receiver.

Do not connect appliances with

Connecting to AC Power

Warning:

not use this polarized plug with an exten­sion cord, receptacle, or other outlet un­less you can fully insert the blades to
prevent b lade exposure.

To prevent electric shock, do

Your receiver has an AC power outlet that you can use to power an elec­tronic device, such as a cassette deck or VCR. This switched outlet
turns on and off with the receiver and provides a maximum of 100
watts.

L

R

CENTER
PREOUT

SUB
WOOFER
PREOUT

A

B

FRONT SPEAKERS

CENTER

SPEAKER

A

B

R

L

CAUTION:

SPEAKER IMPEDANCE
6 OR 8 ~16 / SPEAKER

CAUTION:

DO NOT CONNECT

LR

TV SET OR MONITOR.

AC 120V 60Hz

AC OUTLET

SWITCHED
100W MAX

0.8A MAX

SURROUND
SPEAKERS

LR

CAUTION:

SEE INSTRUCTION
MANUAL

8~16 / SPEAKER

6~LESS THAN 8 /SPEAKER

IMPEDANCE SELECTOR

Before you plug in the receiver’s power cord, double check all other con­nections.

To power the receiver, plug the supplied power cord into a standard AC
outlet. The power cord’s plug is polarized and fits only one way.

L

R

A

A

B

B

R

L

CAUTION:

SPEAKER IMPEDANCE

FRONT SPEAKERS

CENTER
PREOUT

SUB
WOOFER
PREOUT

CENTER

SPEAKER

6 OR 8 ~16 / SPEAKER

CAUTION:

DO NOT CONNECT

LR

TV SET OR MONITOR.

AC 120V 60Hz

AC OUTLET

CAUTION:

SEE INSTRUCTION
MANUAL

LR

8~16 / SPEAKER

SWITCHED
100W MAX

6~LESS THAN 8 /SPEAKER

IMPEDANCE SELECTOR

0.8A MAX

SURROUND

SPEAKERS

16

31-3046.fm Page 17 Monday, January 29, 2001 12:43 PM

Initial Setup

To obtain the best possible surround sound, you need to set up and
adjust your receiver and its components. This is particularly important
when you use the (Dolby) sound mode. These are one-time adjust­ments and you need not to repeat (unless you change the configuration
of your system).

Basic Procedure

Notes:

• When you select
you cannot select L for center or sur­round speakers.

• When you set the front speakers to S,
the

SUBWF

S

for front speakers,

sets to ON.

1. Press

2. Press

3. Press or until the component you want to adjust appears on

4. Press ▲ or ▼ to select the option of the displayed component. The

5. Repeat Steps 3 and 4 to adjust the other components.

POWER (RECEIVER POWER

RECEIVER

vate remote setup.

the display. We recommend that you perform adjustments in the
order that they appear on the display when you initially set up the
receiver.

setting is automatically entered.

located in the center of the remote control to acti-

) to turn on the receiver.

Speaker Size Setting

1. Press until F.L.--C.L.--S.L. appears on the display.

2. Select the front speaker size using ▲ or ▼. If your speaker systems
have a 5-inch or larger cone or if you have not connected a sub­woofer, select L (large). The receiver sends the bass frequencies to
the front speakers. If you use smaller speaker systems, select S
(small): the receiver sends bass frequencies to the subwoofer.

3. Press to move the cursor to the right and select the center
speaker size by pressing ▲ or ▼. Choose L for a 5-inch or larger
cone, S for a smaller cone, or ✱ if you did not connect a center
speaker . When you select ✱, the center speaker signals are sent to
left and right front speakers.

4. Press to move the cursor to the right and select the surround
speaker size using ▲ or ▼: L if they are 5-inch or larger, S if they
are smaller, or ✱ if you did not connect surround speakers. When
you select ✱, the surround speaker signals are sent to the left and
right front speakers.

Subwoofer On/Off Setting

Press until SUBWF ON appears on the display and press ▲ or ▼ to
turn the subwoofer on or off.

17

31-3046.fm Page 18 Monday, January 29, 2001 12:43 PM

Initial Setup

Crossover Frequency Setting

When you select S for any of the speaker’s size setting modes, the
receiver sends the bass frequencies that were destined for that particu­lar speaker to the subwoofer. This setting determines the frequency that
is sent to the subwoofer. If you set all speakers (front, center, and sur­round) to L, you cannot set the crossover frequency (✱✱✱ appears on
the display).

1. Press and XOVER 100 appears on the display.

2. Press ▲ or ▼ to select the crossover frequency, 100, 150, or 200
Hz.

Low Frequency Effect Attenuator Setting

Dolby Digital audio sources include ultra-low bass tones. Set the Low
Frequency Effect (LFE) attenuator as required to prevent this bass tone
from distorting speaker sound.

1. Press until LFEATT 0 appears on the display.

When the

Note:

selected, you cannot set the center
speaker’s distance .

C✱

speaker setting is

2. Press ▲ or ▼ to select the attenuation level, 0, 10, or ✱✱ dB.

Note: The ✱✱ setting, disables the LFE.

Low Cut Filter On/Off Setting

This setting turns the low cut filter for the subwoofer on or off. You can­not adjust this setting if the subwoofer on/off is set to OFF.

1. Press until LCF ON appears on the display.

2. Press ▲ or ▼ to select ON or OFF.

Speaker Distance Settings

You can program speaker distance settings for optimal sound in your
listening area.

1. Press until FRT 10ft. appears on the display.

2. Press ▲ or ▼ to enter the distance between the front speakers and
your listening area. Each time you press the button, the distance
changes 1 foot (between 1 to 30 feet).

3. Press until CNT 10ft. appears on the display.

4. Press ▲ or ▼ to enter the distance between the center speaker and
your listening area. Each time you press the button, the distance
changes 1 foot (between 1 to 30 feet).

5. Press until SUR 10ft. appears on the display.

18

31-3046.fm Page 19 Monday, January 29, 2001 12:43 PM

Initial Setup

Note:

When the

S✱

speaker setting is
selected, you cannot set the surround
speaker’s distance .

6. Press ▲ or ▼ to enter the distance between the surround speakers
and your listening area. Each time you press the button, distance
changes for 1 foot (between 1 to 30 feet).

Dynamic Range Control Setting

In Dolby Digital mode, the dynamic range (how loud and soft sounds are
produced) is compressed so you can better hear low-level sound. This
setting determines the level of compression. Use the MAX setting for low
volume levels, OFF for high volume levels and MID for medium volume
levels.

1. Press until DRC OFF appears on the display.

2. Press ▲ or ▼ to select OFF, MAX, or MID.

Digital Input Setting

Use this setting to assign the rear panel digital input jacks to the
desired components. (See “Digital Connections” on Page 12.)

1. Press until COAX DVD appears on the display.

2. Press ▲ or ▼ to select the device you connected to rear panel coax
digital input, DVD, TV (satellite receiver or TV tuner), CD, MD, VCR,
or OFF (no connection).

3. Press until OPT1 CD appears on the display.

We suggest you set the speaker

Note:

level’s when all setup is complete. (See
“Adjustment Using Test Tone” on
Page 27.)

4. Press ▲ or ▼ to select the device you connected to rear panel
digital input, DVD, TV (satellite receiver or TV tuner), CD, MD, VCR,
or OFF (no connection).

5. Press until OPT2 CD appears on the display.

6. Press ▲ or ▼ to select the device you connected to rear panel
digital input, DVD, TV (satellite receiver or TV tuner), CD, MD, VCR,
or OFF (no connection).

OPT1

OPT2

19

31-3046.fm Page 20 Monday, January 29, 2001 12:43 PM

Basic Operation

Warning:

loss, turn

To prevent possible hearing

to

VOLUME

before you turn

MIN

on the receiver or change the program
sources. After you turn on the receiver or
change the program source, adjust

to a comfortable listening level.

UME

If you select a source while

Note:

MONITOR

is engaged,

TAPE 2

VOL-

TAPE 2

flashes
five times on the display, reminding you
to disengage the

TAPE 2 MONITOR

func-

tion.

The controls on the remote control work the same as the buttons on the
receiver’s front panel, though some are labeled differently.

Follow these steps to use the receiver.

1. Press

2. Press

to turn on the receiver’s power.

POWER

SPEAKERS A

or B on the front panel (if necessary) so SP A or

B appears on the display.

3. Select a program source.
To tune to a radio station, see “Tuning the Radio” on Page 21.
To listen to signals from the component connected to

TOR

, press

TAPE 2 MONITOR

so TAPE 2 appears on the display.

To listen to a source other than one connected to
be sure

TAPE 2 MONITOR

tal video disc/laser disc),
jacks), CD,

TAPE 2 does not show on the display. If necessary, press

so TAPE 2 disappears. Then press

(front panel

, or repeatedly press

FM/AM

(tuner), or

TV/SAT,VIDEO

MD/TAPE 1

the remote control, to display the desired program source.

4. Adjust

VOLUME

wise to decrease it. Or, you can use

clockwise to increase the volume or counterclock-

on the remote control.

VOL –/+

The display shows the current volume setting in dB. -- dB is the
minimum level. Depending on the level setting for each channel,
the maximum level can range between 0 dB and -10 dB.

TAPE 2 MONI-

TAPE 2 MONITOR

VCR, DVD/LD

VIDEO INPUT

(digi-

FUNC

,

on

To deter mine the use of a par ticu -

Note:

lar button or control, see “Using the Re­mote Control” on Page 28 (for the remote
control) or “Index to Features by Control
Name” on Page 43 (for the front panel) to
find the page where the button or control
is described.

5. To adjust the relative volume levels between speakers, press

RECEIVER

on the remote control. Repeatedly press

CH SELECT

the speaker for which you want to change volume levels appears
on the display, FL (front left), CT (center), FR (front left), SR (sur­round right), SL (surround left), and SW (subwoofer). Then, adjust
the level using

CH LEVEL +

–

. You can change the levels within the

range of ±10 dB.
You can check the speaker volume levels by making the receiver

generate a test tone for each speaker’s volume level. See “Adjust­ment Using Test Tone” on Page 27.

6. Press

BASS

or

TREBLE

on the receiver to adjust the bass

and treble to suit your listening preference.

7. Press

to turn off the receiver.

POWER

until

20

31-3046.fm Page 21 Monday, January 29, 2001 12:43 PM

Basic Operation

Tuning the Radio

For weak signals, we recommend

Note:

manual tuning.

Your receiver has four types of electronic tuning — manual, automatic,
direct access, and memory.

Manual and Automatic Tuning

Follow these steps to manually or automatically tune to stations.
Hint: If none of the tuning buttons on the remote control operate, press

first.

TUNER

1. Press

remote control) until the band name and frequency appears on the
display to select the tuner. Then press
control) again to select the desired band. The receiver tunes to and
displays the frequency last selected in that band.

If A, B, or C and a single digit number appear to the left of the sta­tion frequency, press
band name (AM or FM) appears. You do not need to press

if you are tuning with the remote control.

LECT

2. To manually select the next lower or higher frequency, press

TUNING (– TUNE +

the next lower or higher frequency. Or, hold down the button to
rapidly change frequencies, and release it.

To automatically search for the next lower or higher station, hold
down
starts to change, then release it. The receiver searches down or up
the band to the next strong station.

on the front panel (or repeatedly press

FM/AM

TUNING SELECT

on the front panel until the

on the remote control) once to manually select

TUNING (– TUNE +

on the remote control) until the display

FM/AM (ENTER

on the

FUNC

on the remote

TUNING SE-

Notes:

• TUNED appears when you receive a strong signal.

• If you press
at the bottom of the frequency range, the display

ING

TUNING

at the top of the frequency range or

returns to the other end of the range.

Direct Access Tuning (Remote Control Only)

Follow these steps to directly enter a frequency.

1. Repeatedly press
select the desired band. The receiver tunes to and displays the fre­quency last selected in that band.

2. Press

. __ __ __ __ appears on the display with the

MENU

first __ flashing.

3. Enter the desired frequency using the number buttons.

Notes:

• If you enter an invalid frequency (for example, entering 828), the
receiver tunes to the closest valid frequency (830 kHz).

• If you do not press a key within 5 seconds, the receiver exits direct
access tuning. Start over at Step 2.

to select the tuner. Then press

FUNC

ENTER

TUN-

to

21

31-3046.fm Page 22 Monday, January 29, 2001 12:43 PM

Basic Operation

Memory Tuning

Notes:

• A class is a group of up to 10 station
frequencies.

• If you store a frequency in a memory
that already contains a frequency, you
replace the previous frequency.

• If your receiver is disconnected from
AC power for several days, it loses all
the stored frequencies.

Memory tuning lets you store up to 30 AM or FM frequencies in three
different classes (10 frequencies in each class), then quickly tune to a
class and station.

Follow these steps to store a station in a memory location using the
front panel controls. (You cannot store a station in memory using the
remote control.)

1. Press

to select the tuner, then press

FM/AM

again to select the

FM/AM

desired band.

2. Tune to the frequency you want to store.
If desired, press

MPX MODE

for FM stereo or monaural sound (see

“Using MPX MODE” ). This setting is also stored in memory.

__

3. Press

MEMORY

. The class (A, B, or C) and

(for the channel num-

ber) flash on the display for about 5 seconds.

4. Press
press

until the class you want (A, B, or C) appears, then

CLASS

STATION

until the channel number you want appears.

In about five seconds, the class and channel number light steadi­ly, indicating the receiver stored the frequency.

To tune to a stored station, press
appears, then repeatedly press

so the desired class number

CLASS
STATION

to select the channel. Or,
you can directly enter the channel number using that number’s key on
the remote control.

Using MPX MODE

Using Headphones

To receive FM stations in stereo, press

MPX MODE

so MONO disappears
from the display. STEREO appears when you receive an FM broadcast in
stereo.

You can improve the reception of weak FM stations by pressing

FM MONO

until MONO appears. This reduces noise while you listen to a weak FM
station, but you get monaural instead of stereo sound.

To listen using optional headphones (not supplied), insert the head­phones’ 1/4-inch plug into the receiver’s front panel

PHONES

jack and

H.P SP appears on the display. The speakers are automatically

silenced.

Listening Safely

To protect your hearing, note the following when using headphones.

• Set the volume to its lowest setting before you begin listening.
After you begin listening, adjust the volume to a comfortable level.

• Do not listen at extremely high volume levels. Extended high­volume 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.

22

31-3046.fm Page 23 Monday, January 29, 2001 12:43 PM

Basic Operation

Muting the Receiver

Loudness Control

Bypassing the Sound
Controls

Adjusting the Display
Brightness

Switching Analog/Digital
Signal Input

To temporarily mute the sound, press

--MUTING -- appears. Press

To increase the high and low ranges of sounds for improved audio at a
low listening level, press
pears. Press

To bypass your receiver’s sound controls (
sound options) so you can hear the audio at its original tonal quality (for
example), press
off this feature.

Note: When you turn off the bypass feature, you will have to reselect
any desired special sound options (see “Using Advanced Sound
Options” on Page 26).

You can change the display brightness so it is easy for your eyes in a
dark environment. Press
you reach the desired brightness level.

When you connect a device to any of the rear panel digital input jacks,
you must switch the input signal for digital or analog.

Select the device desired, then press

SIG SELECT

input mode is switched between ANALOG and DIGITAL as shown on the
display. When the Dolby Digital signal is input, AC-3 appears on the
display.

LOUDNESS

DIRECT

on the remote control). Each time you press the button the

LOUDNESS

again to turn off this feature.

so DIRECT appears. Press

DIMMER

again to restore the audio level.

MUTING

on the front panel so LOUDNESS ap-

on the remote control repeatedly until

SIGNAL SELECT (RECEIVER

on the remote control.

MUTING

BASS, TREBLE

DIRECT

or any special

again to turn

followed by

Using ATT

Notes:

•

SIGNAL SELECT

that is not assigned to any of the digital input jacks.

• Some laser discs have only analog audio signals. If your laser disc
is this type, use the ANALOG setting.

• The receiver accepts Dolby Digital or PCM (32 kHz/44 kHz/48
kHz) digital signals only. For other formats of digital signals, use
the ANALOG setting.

During analog operation, if the receiver receives signals that are too
strong, the overload indicator (a dot above the 2nd character position)
lights. If this happens, press
nal and prevent the distortion. ATT lights on the display.

does not function for any analog device or device

on the remote control to lower the sig-

ATT

23

31-3046.fm Page 24 Monday, January 29, 2001 12:43 PM

Cassette Deck/VCR Features

Using the MD/TAPE 1 and
TAPE 2 MONITOR Buttons

You can connect two cassette decks to the receiver. Selecting either

or

TAPE 1

TAPE 2 MONIT OR

deck you connected to the receiver’s corresponding (

MONITOR

Press

) jacks.

MD/TAPE 1

. MD/TAPE1 appears on the display. You hear the play-

lets you hear the playback from the cassette

MD/TAPE 1

or

TAPE 2

back from the cassette deck or VCR you connected to the receiver’s

TAPE 1 IN

Press

jacks.

TAPE 2 MONITOR

. TAPE 2 appears on the display along with the last
program source you selected. You can hear playback or monitor a
recording from the cassette deck you connected to the receiver’s

MONITOR

jacks. The

TAPE 2 MONITOR REC

from the previously selected source after you press
To return to the previous source, press

jacks continue to output sound

TAPE 2 MONITOR

TAPE 2 MONITOR

again so TAPE 2

TAPE 2

.

disappears.

Notes:

• If you press

TAPE 2 MONIT OR

when that cassette deck is neither play­ing nor recording, the receiver mutes the current audio source. To
hear the audio source, press

TAPE 2 MONITOR

so TAPE 2 disappears

from the display.

• Do not press
connected to

TAPE 2 MONIT OR
TAPE 2 MONITOR REC

while you are recording on the deck

. because it interrupts the record-

ing for about 1 second.

MD/

MD/

Monitoring a
Program Source

Dubbing a Cassette Tape

The receiver sends the audio of the program source you select—

DVD/LD, TV/SAT, VIDEO, CD
TAPE 2 MONITOR OUT/REC

, or

jacks. If you select one of the audio/video source,

the video program is also sent to the
The

VOLUME

control does not affect the level of the signal going to the

(tuner)—to the

FM/AM

MD/TAPE 1 OUT/REC

VIDEO OUT TO MONITOR TV

jack.

VCR

and

,

tape decks.

You can copy (dub) a cassette tape from one cassette deck to another
through the STAV-3790.

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
nected to the

MONITOR

TAPE 2 REC

so TAPE 2 and the last program source you selected appear on

MD/TAPE 1

jacks as the source, and the deck you con-

jacks as the recording deck. Then press

TAPE 2

the display. (See “Using the MD TAPE 1 and TAPE 2 MONITOR But­tons”.)

The

VOLUME

control does not affect the level of the signal going to the

tape decks.
Note: The receiver passes through the original signals as they are.

Therefore, you cannot dub the digital signal to analog signal or vice
versa.

24

31-3046.fm Page 25 Monday, January 29, 2001 12:43 PM

Cassette Deck/VCR Features

Playing and Recording
Video Tapes

You can connect four v ideo sources to the receiver . If you connect a VCR
to the
panel

and another VCR or camcorder to

VCR

VIDEO INPUT

audio and video jacks, you can copy video cassette

DVD/LD, TV/SAT

, or front

tapes from one VCR to another and monitor the dubbing process.

Playing a Video Tape

To play a video tape, insert the tape into the VCR. Press the button (

DVD/LD, TV/SAT

, or

) that corresponds to the jack to which the VCR is

VIDEO

connected. The selected function name appears on the display. Follow
the VCR’s instructions to begin playback. If you connected a monitor to
the receiver’s

TO MONITOR TV

jack, you can view the program on that mon-

itor .

VCR

Copying a Video Tape

Follow these steps to copy a video tape from one VCR or camcorder to
another through the STAV-3790.

1. Insert the tape you want to copy into the VCR or camcorder con-

nected to

DVD/LD, TV/SAT

2. Insert a blank tape (or one you want to record over) into the VCR

connected to the

3. Press the button that corresponds to the jack to which the play-

back VCR or camcorder is connected.

VCR

, or

jacks.

VIDEO INPUT

.

,

4. Begin recording and playback on the VCRs/camcorder.

Important: Most material performed in public, such as concerts, plays,
and movies, or distributed on prerecorded video tapes is copyrighted.
The unauthorized recording or duplication of copyrighted material is a
violation of the copyright 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 violation of U.S. copyright laws for a consumer
to record a broadcast television program for private (in-home) viewing.

25

31-3046.fm Page 26 Monday, January 29, 2001 12:43 PM

Using Advanced Sound Options

Your receiver has three special sound options: Dolby Digital, Dolby Pro
Logic Surround, and DSP Effect. These special options enhance the
sound from a connected program source.

Notes:

• To get the full benefit from programs encoded with Dolby Sur­round Sound, you need a stereo VCR or DVD/LD player.

• Dolby Surround does not operate correctly if the signal passes
through a graphic equalizer. If you connected an equalizer to the

TAPE 2 MONITOR

Dolby Surround signals.

To turn on Dolby Digital or Dolby Pro Logic Surround, press .

PRO LOGIC appears on the display. The receiver automatically judges

whether the received signal is Dolby Digital or Dolby Pro Logic Surround
and switches itself to the correct mode. When the receiver receives 5.1­channel Dolby Digital signal, DIGITAL lights on the display.

jacks, do not select

TAPE 2 MONITOR

when you listen to

To turn on a DSP effect, press
on the display along with SFC.

DSP MODE

until the desired option appears

Dolby Digital

Dolby Digital is a compression format that records the sound of six
channels (front L/R, center, surround L/R, and subwoofer). Since the
subwoofer has a smaller frequency range, the term 5.1-channel is used.
All channels’ sounds are digitally compressed using a method called
AC-3. When playing back, the masking and digital filtering technology
yields the best sound quality. The LFE (low frequency effect) technique
adds strong bass sounds. See “Low Frequency Effect Attenuator Set­ting” on Page 18 to set the LFE level. When the source signal has an
LFE channel, LFE lights on the display and the indicator next to it lights
when the receiver actually receives LFE signal.

Dolby Pro Logic Surround

Dolby Pro Logic Surround puts you in the middle of the action. The cen­ter- and rear-channel speakers add incredible realism by directing the
sound to the appropriate speakers.

DSP Effect

You can choose one of five DSP effects — HALL 1, HALL 2, JAZZ,

DANCE, THEATER 1, or THEATER 2. Hall 1 simulates a large concert

hall, Hall 2 simulates a concert hall with stone walls, and both are best
suited for classical music. Jazz provides the acoustic effects generally
heard in jazz clubs. Dance gives the effect of a discotheque. Both the­ater modes provide the effect of a movie theater. THEATER 1 sounds
like a large movie theater. THEATER 2 seems like a smaller theater. Try
each setting to find the best effect for your programs.

26

To change the DSP effect level, press
control), then hold down
level. The effect can vary depending on the source program.

– EFFECT +

DSP MODE

(on the remote) to change the effect

(on the receiver or remote

31-3046.fm Page 27 Monday, January 29, 2001 12:43 PM

Using Advanced Sound Options

Adjustment Using Test Tone

Dolby Digital Playback

DVD 5.1-Channel Playback

The test tone lets you balance the signal levels between all your speak­ers.

To turn on the test tone, press then press
sounds a 2-second tone from the front left, center, front right, and sur­round right, surround left, subwoofer, in sequence. FL, CT , FR, SR, SL,
and SW appear as the test tone sounds.

Note: The test tone sounds only for the speakers that you connected
and activated as described in “Initial Setup.”

Press

– CH LEVEL +

adjust.
Press

TEST TONE

When you want to play a source that has Dolby Digital audio signal, set
the source to digital mode (see “Switching Analog/Digital Signal Input”
on Page 23) and press . Then activate the source device. DOLBY

DIGITAL

ital signals.
Note: When you connect a DVD/LD player that uses AC-3 RF output,

you need to connect an optional RF demodulator.

When you connect a multi-channel decoder or DVD player with 5.1­channel output (see “DVD 5.1-Channel Inputs” on Page 11), press

LD

set the receiver to 5.1-channel mode). DVD 5.1ch appears on the dis­play.

appears on the display as the receiver receives the Dolby Dig-

on the front panel twice (once to select the DVD/LD function, once to

while the test tone sounds for the speaker you want to

again to turn off this feature.

TEST TONE

. The receiver

DVD/

Using the Midnight Mode

Program Format Indicators

When you select this mode

BLE, BASS, MIDNIGHT

You can compensate for the effect of sound deterioration at low listening
levels to enjoy the surround sound of your favorite movie whenever you
desire.

Press

MIDNIGHT MODE (MIDNIGHT

appears on the display. Press the button again to disable this feature.

The following indicators light to show the channels being played.
In 5.1-channel Dolby Digital mode: L (left front), C (center), R (right

front), LS (left surround), and RS (right surround).
In Dolby Surround mode: L (left front), R (right front), and S (surround).

are disabled.

mode,

DSP

on the remote control) so MIDNIGHT

SIGNAL SELECT, ATT, DIRECT, TRE-

27

31-3046.fm Page 28 Monday, January 29, 2001 12:43 PM

Using the Remote Control

The remote control works up to a distance of about 23 feet, and within a
30-degree angle on either side of the receiver. Point the control at the
receiver’s front panel and press the desired button(s).

Many buttons on the remote control work the same as buttons on the
receiver’s front panel. Use these buttons exactly as you would use the
corresponding buttons on the receiver.

CONTROL MODE Buttons

Control
Mode

RECEIVER POWER

POWER

G

IN

T

U

M

DVD/LD

VCR 1
VCR 2

1

CH SELECT

5

9

MODE CHECK

TUNE

+

ENTER

–

TUNE

VOL VOL

CHANNEL

ASMS

CONTROL MODE

TV/SAT CD

TV CONTROL

RECEIVER

DSP MODE

23

ATT SIG SELECT

TEST TONE

6

7

CH LEVEL

0

+10

TV POWER

TV FUNC

TUNER

MD/TAPE

MIDNIGHT

4

8

EFFECT

MENU

TV/VCRCLASS

DIMMER FUNCTION DIRECT
REMOTE

SET UP

The

CONTROL MODE

buttons select the device you want to control. The
remote control can operate the basic functions of your other audio/
video devices. Follow these steps to recall and program the remote con­trol with the correct manufacturer’s code number for the device.

Note: Some brands have more than one code listed in the charts. If a
code does not work with your device, try another . The listed codes might
not work with all models from the listed manufacturers.

1. While holding

REMOTE SET UP

, press 1. All the

CONTROL MODE

buttons

start to flash and PUSHFUNC flashes on the display.

2. Press the

CONTROL MODE

button for the device you want to set the

code. For example, to set the code for CD player, press CD.

: DVD or LD player

DVD/LD

: TV or satellite tuner

TV/SAT

: CD player/changer

CD
MD/TAPE
VCR1
VCR2
TV CONTROL

The selected

: MD recorder or tape recorder
: VCR or cassette deck
: VCR or cassette deck

: TV or CATV tuner

CONTROL MODE

button lights steadily and the first
manufacturer name and its preset code appear alternately on the
display.

3. Repeated press ▲ or ▼ to display the name of the manufacturer of
your device. The selected manufacturer name and its preset code
flashes alternately. The list of all the available preset codes is
located in the back of this manual.

28

4. Point the remote control to the device desired, and enter the three­digit code. The remote control sends the power on/off signal. If the
device turns on or off, you have set the correct code.

If the device does not turn on/off, press or to display other
codes for the selected manufacturer. If you try every preset code
and the device still does not function, you must use the original
remote control supplied with your device.

5. Press

REMOTE SET UP

You can clear all the programmed codes if necessary. Press

and 0 at the same time for about three seconds until all the

UP

buttons blink three times.

MODE

to exit the preset mode.

REMOTE SET

CONTROL

Using the Remote Control

31-3046.fm Page 29 Monday, January 29, 2001 12:43 PM

Using the Remote Control

Receiver/Amplifier Operation

RECEIVER POWER

POWER

G

IN

T

U

M

VOL VOL

DVD/LD

VCR 1
VCR 2

1

CH SELECT

5

9

MODE CHECK

ENTER

CHANNEL

ASMS

CONTROL MODE

TV/SAT CD

TV CONTROL

RECEIVER

DSP MODE

23

TEST TONE

6

CH LEVEL

0

TUNE

+

–

TUNE

ATT SIG SELECT

7

+10

TV POWER

TV FUNC

TUNER

MD/TAPE

MIDNIGHT

4

8

EFFECT

MENU

TV/VCRCLASS

DIMMER FUNCTION DIRECT
REMOTE

SET UP

Receiver/
Amplifier

Before operation, press

RECEIVER POWER
MUTING

Turns the STAV-3790 on/off.
Silences the receiver . Press again to restore the sound to its pre-

to select receiver/amplifier operation.

TUNER

vious level.

–

+ Tunes to radio stations.

TUNE

ENTER

–

+ Adjusts the system’s volume.

VOL

CHANNEL
CLASS
MENU

Selects the AM or FM tuner band.

Tunes to the next higher or lower memory location.
Selects the memory class.
LAllows direct input of the station frequency.

Number Buttons Selects the corresponding memory station. During Direct Access,

enter the station’s frequency.
Activates Dolby Digital or Dolby Pro Logic Surround mode when

DSP MODE

pressed after

RECEIVER

Selects the DSP mode; HALL, JAZZ, DANCE, THEATER 1, or

.

THEATER 2.

MIDNIGHT

CH SELECT

TEST TONE

ATT

SIG SELECT

– CH LEVEL +

–

+ Adjusts the level of DSP mode when pressed after

EFFECT

FUNCTION

Activates the midnight operation mode when pressed after

.

CEIVER

Selects the channel to set the speaker sound lev el when pr essed
after

RECEIVER

.

Sounds test tones from each speaker when pressed after

.

CEIVER

Attenuates (lowers) the signal level when pressed after

.

ER

Selects the input signal, digital or analog, when pressed after

.

CEIVER

Sets the level of the channel selected by
pressed after

RECEIVER

.

CH SELECT

Selects a program source (VCR, PHONO, tuner, CD, DVD/TV , or

RE-

RECEIV-

when

RECEIVER

RE-

RE-

.

LD/SAT). Repeatedly press until the display shows the desired
program source.

DIRECT

Bypasses the receiver’s audio control circuits. Press again to re­store the previous settings.

DIMMER
MODE CHECK

Dims the display.
Press to show the current operation mode of the remote control.

The currently active

CONTROL MODE

button lights.

29

31-3046.fm Page 30 Monday, January 29, 2001 12:43 PM

Using the Remote Control

RECEIVER POWER

POWER

G

IN

T

U

M

DVD/LD

VCR 1
VCR 2

1

CH SELECT

5

9

MODE CHECK

TUNE

ENTER

TUNE

VOL VOL

CHANNEL

ASMS

CONTROL MODE

TV/SAT CD

TV CONTROL

RECEIVER

DSP MODE

23

ATT SIG SELECT

TEST TONE

6

7

CH LEVEL

0

+10

TV POWER

+

–

TUNER

MD/TAPE

EFFECT

DIMMER FUNCTION DIRECT

REMOTE

TV FUNC

MIDNIGHT

4

8

MENU

TV/VCRCLASS

SET UP

CD
Buttons

CD Player/MD Recorder Operation

Note: You must have connected the CD player to both of your receiver’s

CONTROL OUT

and audio jacks or programmed the code for your CD

player/MD recorder into the remote control for these functions to work.
Before operation, press CD to select CD player operation.

POWER

/ Rapidly advances backward/forward within a track.

|

/ | Returns to the beginning of the current track or advances to the

Number Buttons Selects track.

+10

MENU (CD player only)

Turns the CD player/MD recorder on and off.
Press to pause play. Press again to resume. Press together with

to start recording on MD recorder.

Plays the disc.

next track.
Stops playback. Press together with to start recording on the

MD recorder.

Enters 10 of the track number. For example, to enter track 15,
press

then 5 (might not work with some CD players).

+10

Selects discs in a multi-play CD changer (might not work with
some CD players). Enter the disc number using the number but­tons then press

MENU

.

Cassette Deck Operation

RECEIVER POWER

POWER

G

IN

T

U

M

VOL VOL

DVD/LD

VCR 1
VCR 2

1

CH SELECT

5

9

MODE CHECK

ENTER

CHANNEL

ASMS

CONTROL MODE

TV/SAT CD

TV CONTROL

RECEIVER

DSP MODE

23

TEST TONE

6

CH LEVEL

0

TUNE

+

–

TUNE

ATT SIG SELECT

7

+10

TV POWER

TV FUNC

TUNER

MD/TAPE

MIDNIGHT

EFFECT

TV/VCRCLASS

DIMMER FUNCTION DIRECT
REMOTE

SET UP

4

8

MENU

MD
Recorder
Buttons

Note: You must have connected the cassette deck to both your
receiver’s

CONTROL OUT

and audio jacks for these functions to work when
using an Optimus Professional Series cassette deck with the OSR ( )
mark (see “Using One Remote Control for More than One Unit” on
Page 15). If you are using any other brand of cassette deck, you must
program the remote control with the appropriate code. Otherwise, the
remote control will not operate. (See “Using the Remote Control” on
Page 35 for a listing of codes.)

Before operation, press

to select cassette deck operation.

TAPE

The remote control operates a single cassette deck and Deck 2 on a dual
cassette deck. To operate Deck 1 on a dual cassette deck, use the but­tons shown in parentheses (these buttons do not work with all decks).

POWER

(3)
(2)

(1)/ (4)

Turns on/off the cassette deck.
Press to temporarily stop playback/recording. Press again to re-

sume. Press together with to start recording.
Press to start normal playback.
Stops playback/recording. Press together with to start record-

ing.
Quickly locates and plays the beginning of recorded material dur-

ing play.
Or, when the tape is stopped, rapidly searches forward or back-

ward to locate a specific section of the tape.

30

31-3046.fm Page 31 Monday, January 29, 2001 12:43 PM

Using the Remote Control

DVD/LD Player Operation

Note: You must have programmed the code for your DVD or LD player
into the remote control for these functions to work.

RECEIVER POWER

POWER

G

IN

T

U

M

VOL VOL

DVD/LD

VCR 1
VCR 2

1

CH SELECT

5

9

MODE CHECK

ENTER

CHANNEL

ASMS

CONTROL MODE

TV/SAT CD

TV CONTROL

RECEIVER

DSP MODE

23

TEST TONE

6

CH LEVEL

0

TUNE

+

–

TUNE

ATT SIG SELECT

7

+10

TV POWER

TV FUNC

TUNER

MD/TAPE

MIDNIGHT

4

8

EFFECT

MENU

TV/VCRCLASS

DIMMER FUNCTION DIRECT
REMOTE

SET UP

DVD/LD
Buttons

Before operation, press

POWER

Turns on/off the DVD/LD player.

to select DVD/LD player operation.

DVD/LD

Press to pause play. Press again to resume. On some DVD play­ers, press to pause the playback so you can view a single frame
(freeze-frame operation).

Plays the disc.
Stops playback.

/ Rapidly advances backward/forward within a chapter/track.

|

/ | Returns to the beginning of the current chapter/track or advances

to the next chapter/track.

Number Buttons Selects chapter/track.

+10

MENU

Enters 10 of the chapter/track number. For example, to enter
chapter/track 15, press

+10

then 5.

Turns the menu on/off on D VD play er , sele cts the side of a disc on
the LD player.

Press the

DVD/LD CONTROL MODE

button twice in succession to enable fol-

lowing operation with some number buttons.

2
3

6

8
9

Up arrow (▲).
ENTER
Right/left arrow ( / )
MENU
TITLE

31

31-3046.fm Page 32 Monday, January 29, 2001 12:43 PM

Using the Remote Control

RECEIVER POWER

POWER

G

IN

T

U

M

TUNE

ENTER

TUNE

VOL VOL

CHANNEL

ASMS

CONTROL MODE

DVD/LD

TV/SAT CD

TV CONTROL

VCR 1

RECEIVER

VCR 2

DSP MODE

23

1

CH SELECT

MODE CHECK

TEST TONE

5

CH LEVEL

9

ATT SIG SELECT

6

0

+10

7

TV POWER

TV FUNC

+

–

TUNER

MD/TAPE

MIDNIGHT

EFFECT

DIMMER FUNCTION DIRECT
REMOTE

SET UP

VCR Operation

Note: You must have programmed the code for your VCR into the
remote control for these functions to work.

Before operation, press

VCR1 or VCR2

operation) to select VCR operation.

POWER

Press to temporarily stop playback/recording. Press again to re-

VCR
Buttons

Press to start normal playback.

/ Quickly locates and plays the beginning of recorded material dur-

4

8

MENU

TV/VCRCLASS

CHANNEL

Number Buttons Selects channel directly (might not work with some VCRs).

+10

TV/VCR

Turns on/off the VCR.

sume. Press together with to start recording.

Stops playback/recording. Press together with to start record­ing.

ing play.
Or, when the tape is stopped, rapidly searches forward or back-

ward to locate a specific section of the tape.
Press to change the VCR’s tuner channel.

With some VCRs, you might need to press this to enter the chan­nel you selected with number buttons.

Press to switch the VCR antenna output, VCR’s tuner output or
direct signal from antenna to use TV’s tuner.

(the one you assigned your VCR

RECEIVER POWER

POWER

G

IN

T

U

M

ENTER

TUNE

+

–

TUNE

VOL VOL

CHANNEL

ASMS

CONTROL MODE

DVD/LD

TV/SAT CD

TV CONTROL

VCR 1

RECEIVER

VCR 2

DSP MODE

1

23

CH SELECT

MODE CHECK

TEST TONE

5

CH LEVEL

9

6

0

ATT SIG SELECT

7

+10

TV POWER

TV FUNC

TUNER

MD/TAPE

MIDNIGHT

4

8

EFFECT

MENU

TV/VCRCLASS

DIMMER FUNCTION DIRECT
REMOTE

SET UP

TV/CATV
Buttons

TV/CATV Operation

Note: You must have programmed the code for your TV into the remote
control for these functions to work.

Before operation, press

TV CONTROL or TV/SAT

TV operation) to select TV operation.

TV POWER

POWER

Turns on/off the TV. This button works in any remote operation
mode. (Operative for the TV assigned to the
only.)

Turns on/off the TV.

▲/▼ Increases/decreases the TV volume.

CHANNEL

TV FUNC

– VOL +

Number Buttons Selects channel directly.

Press to change the tuner channel.
Selects the TV’s input mode, antenna or line input. This button

works in any remote operation mode.
Adjusts the volume.

(the one you assigned your

TV CONTROL

button

32

31-3046.fm Page 33 Monday, January 29, 2001 12:43 PM

Using the Remote Control

RECEIVER POWER

POWER

G

IN

T

U

M

VOL VOL

DVD/LD

VCR 1
VCR 2

1

CH SELECT

5

9

MODE CHECK

ENTER

CHANNEL

ASMS

CONTROL MODE

TV/SAT CD

TV CONTROL

RECEIVER

DSP MODE

23

TEST TONE

6

CH LEVEL

0

TUNE

+

–

TUNE

ATT SIG SELECT

7

+10

TV POWER

TV FUNC

TUNER

MD/TAPE

MIDNIGHT

EFFECT

TV/VCRCLASS

DIMMER FUNCTION DIRECT
REMOTE

SET UP

4

8

MENU

SAT
Buttons

Satellite Receiver Operation

Note: You must have programmed the code for your SAT receiver to the
remote control for these functions to work.

Before operation, press

POWER

/ /

▲/▼

ENTER

|

/ | Turns the program information screen on/off.

Number Buttons Selects channel directly.

MENU

Turns the power on.
Moves the cursor left/right/up/down.
Selects the position selected by the cursor buttons //▲/▼.

Turns the menu on/off.

receiver to select SAT receiver operation.

TV/SAT

Background Control

You can control one device while listening to another. For example, you
can rewind a tape while listening to CD.

1. While operating one device, press
selected

CONTROL MODE

2. Repeatedly press

button lights.

MODE CHECK

so the button for the device you want

to control lights.

3. Operate the newly selected device.

MODE CHECK

. The current

4. Press

MODE CHECK

so the original

CONTROL MODE

button lights. You
can also press the original button to return to the original func­tion.

33

31-3046.fm Page 34 Monday, January 29, 2001 12:43 PM

Using the Remote Control

Following is the list of the pre-programmed remote control codes for
other devices.

DVD Brand Code

Akai 007
JVC 004
Panasonic 003
Pioneer 000,003
RCA 009
Samsung 005
Sharp 006
Sony 002
Toshiba 001

LD Brand Code

Kenwood 103
Mitsubishi 100
Panasonic 105,106
Philips 104
Pioneer 100
RCA 107
Sony 101

SAT Brand Codes

Pioneer 200
RCA 201,203
Sony 202

34

31-3046.fm Page 35 Monday, January 29, 2001 12:43 PM

Using the Remote Control

VCR Brand Code

Fisher 410,426,412,427,425,420
Goldstar 411,409
Grandiente 452
Hitachi 408,401,406,436,434
JVC 428,430,429,408,414,431,407
Magnavo x 414,408,426,403
Mitsubishi 409,420,421,422,423,424,408,407
Optimus 408,432,433,402,418,419
Panasonic 408,432,433
Pioneer 400,453
RCA 401,406,408,414,405,413,411,415
Sanyo 410,412,425,435
Sharp 402,418,419
Sony 416,417,404,408
Toshiba 405,409,426
Zenith 403,404,417

TAPE Brand Code

Denon 810
Fisher 813
JVC 802
Kenw ood 804,807
Onkyo 809,808
Optimus 800
Pioneer 800
Sony 801,806
TEAC 805
Technics 803
Yamaha 811,812

35

31-3046.fm Page 36 Monday, January 29, 2001 12:43 PM

Using the Remote Control

CD Brand Code

Denon 309
JVC 303
Kenw ood 310,321,311
Marantz 323,312,324
Onkyo 320,308,307
Optimus 300
Philips 312,322
Pioneer 300
RCA 302,319,313
Sanyo 313
Sony 301,316,317,318
TEAC 305,306,327,324,325
Technics 304,326
Yamaha 315,314,328

TV Brand Code

GE 601,608,607,610,611,617,602,628,618
Goldstar 610,623,621,602
Grandiente 635
Hitachi 606,610,624,625,618
JVC 613,623
Magnavox 607,610,603,612,629
Mitsubishi 609,610,602,621
Panasonic 608,622,607
Philips 607
Pioneer 600
RadioShack 610,623,621,602
RCA 601,610,615,616,617,618

36

Sanyo 621,614
Sharp 602,619,627
Sony 604
Toshiba 605,602,626,621
Zenith 603,620

31-3046.fm Page 37 Monday, January 29, 2001 12:43 PM

Using the Remote Control

CATV Brand Code

Jerrold 711,701,702,712,704,713,703,714,716,715
Pioneer 700
S.A. 705,706,708,709
Zenith 707,717,710

MD Brand Code

Denon 906
Kenwood 903
Onkyo 905
Pioneer 900, 902
Sharp 902
Sony 901
TEAC 904

37

31-3046.fm Page 38 Monday, January 29, 2001 12:43 PM

Troubleshooting

If the receiver is not working as it should, the following suggestions might help. If you f ollo w the suggestions in this chart and the
receiver still does not work properly, contact your local RadioShack store for assistance.

Problem Cause Suggestion

Power does not turn on. Power cord is disconnected. Plug in the power cord.

Protection circuit is activated. Unplug the power cord, then plug it in again.

The receiver does not respond
to button presses.

Static discharge has affecte d the r e­ceiver .

Unplug the power cord, then plug it in again. (If
static electricity is a problem, use th e remote control
as much as possible.)

No sound. Incorrect connections. Check and correct the connections.

The mute function is activated. Press

MUTING

.
The volume is turned down. Turn up the volume.
Speaker wires are disconnected. Connect the speaker wires.
Speakers are turned off. Press

SPEAKER

so SP A appears on the disp lay.

Disconnect the headphones if connected.

No picture when you select a
video source.

TAPE 2 function is engaged. Press
The selected video source is not set

Correct the problem with the selected video source.

correctly.

so TAPE 2 clears from the display.

TAPE 2

Incorrect connections. Check and correct the connections.

High noise level. Station not correctly tuned. Adjust tuning.

Antenna not connected. Connect the antenna.
FM antenna still coiled or is not

pointing in the correct direction.
AM loop antenna not pointing in the

Stretch both ends of the antenna taut and reposition
the antenna.

Adjust the AM loop antenna.

correct direction.
Noise is coming from another electri-

Try using an AC line noise filter to reduce the noise.

cal appliance.

Automatic tuning does not stop

Stations are too weak. Use a better antenna.

when searching for stations.
Cannot make copies of video

tapes.

Tapes are protected by a copy pro­tection method.

You cannot make a good copy.

Video connections are incorrect. Check and correct the connections.

Remote control does not work. Remote is set to other device. Press the

control.

Batteries are weak. Replace the batteries.

Remote does not control cas­sette deck or CD player.

Cassette deck or CD player is not
compatible.

The feature only works with Optimus Professional

Series components.
Control cable is not plugged in. Properly connect the control cable.
Audio cables are not plugged in. Properly connect the audio cables.

38

CONTROL MODE

button for the device to

31-3046.fm Page 39 Monday, January 29, 2001 12:43 PM

Care and Maintenance

Your Optimus STAV-3790 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 and its remote control only in normal tem­perature environments. Temperature extremes can shorten the life of
electronic devices, damage batteries, and distort or melt plastic parts.

Keep the receiver away from dust and dirt, which can cause premature
wear of parts.

Wipe the receiver with a damp cloth occasionally to keep it looking new.
Do not use harsh chemicals, cleaning solvents, or strong detergents to
clean the receiver.

Use only fresh batteries of the recommended size and type in the remote
control. Always remove old or weak batteries. They can leak chemicals
that can destroy electronic circuits.

Modifying or tampering with your receiver’s internal components can cause a malfunction and might invalidate the
receiver’s warranty and void your FCC authorization to operate it. If the receiver is not operating as it should, take
it to your local RadioShack store for assistance.

39

31-3046.fm Page 40 Monday, January 29, 2001 12:43 PM

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.

40

31-3046.fm Page 41 Monday, January 29, 2001 12:43 PM

Specifications

Amplifier

Front Channel Average Power Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 Watts per Channel into 8 Ohms

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 (1 kHz, 0.8% THD, 8 Ohms)

Center Channel Surround Power Output . . . . . . . . . . . . . . . . . . . . . . . . . 100 Watts (1 kHz, 0.8% THD, 8 Ohms)

Continuous Rear Surround Power Output . . . . . . . . . . . . . . 100 Watts per Channel (1 kHz, 0.8% THD, 8 Ohms)

Input Sensitivity/Impedance

Frequency Response

Output Level/Impedance

Tone Controls

Signal-to-Noise Ratio (IHF, Short Circuited, A Network)

Signal-to-Noise Ratio (EIA, at 1 Watt, 1 kHz)

CD, DVD/LD, TV/SAT, VCR, VIDEO, MD/TAPE, TAPE 2 MONITOR . . . . . . . . . . . 200 mV/47 kOhms

CD, DVD/LD, TV/SAT, VCR, VIDEO, MD/TAPE, TAPE 2 MONITOR . . . . 5 Hz to 100,000 Hz +0/–3 dB

VCR REC, MD/TAPE REC, TAPE 2 MONITOR REC . . . . . . . . . . . . . . . . . . . . . . . 200 mV/2.2 kOhms

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±

Bass
Treble

Loudness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +9 dB/+7 dB (100 Hz/10 kHz)

CD, DVD/LD, TV/SAT, VCR, VIDEO, MD/TAPE, TAPE 2 MONITOR . . . . . . . . . . . . . . . . . . . . . . 97 dB

CD, DVD/LD, TV/SAT, VCR, VIDEO, MD/TAPE, TAPE 2 MONITOR . . . . . . . . . . . . . . . . . . . . . . 80 dB

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±

From 20 to 20,000 Hz,

6 dB (100 Hz)
6 dB (10 kHz)

Video Section

Input Sensitivity/Impedance VCR, DVD/LD, TV/SAT, VIDEO . . . . . . . . . . . . . . . . . 1 Volt Peak-to-Peak/75 Ohms

Output Level/Impedance VCR, MONITOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Volt Peak-to-Peak/75 Ohms

Frequency Response VCR, MONITOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Hz to 7 MHz +0/–3 dB

Signal-to-Noise Ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 dB

Crosstalk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 dB

41

31-3046.fm Page 42 Monday, January 29, 2001 12:43 PM

Specifications

FM Tuner

Frequency Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87.5 to 108 MHz

Usable Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Mono: 13.2 dBf, IHF (1.3 µV/75 Ohms)

50 dB Quieting Sensitivity

Signal-to-Noise Ratio

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

Mono . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20.2 dBf

Stereo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38.6 dBf

Mono . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 dB (at 85 dBf)

Stereo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 dB (at 85 dBf)

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 280 Watts

AC Outlet Ratings Switched . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Total 100 Watts (0.8 Amps) Maximum

Dimensions (HWD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61/4 × 169/16 × 153/8 Inches

Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 lb 10 oz

Specifications are typical; individual units might vary. Specifications are subject to change and improvement with­out notice.

(158 × 420 × 391 mm)

(9.8 kg)

42

31-3046.fm Page 43 Monday, January 29, 2001 12:43 PM

Index to Features by Control Name

This table lists the control and indicator names found on the front of your receiver, al ong with the page number where the con­trol or indicator is discussed. To find a description for the buttons on the remote control, see “Using the Remote Control” on
Page 28

Control Page

26

BASS

CD

CLASS

DIRECT

DSP MODE

DVD/LD

FM/AM

LOUDNESS

MD/TAPE

MEMORY

MIDNIGHT MODE

MPX MODE

PHONES

POWER

SIGNAL SELECT

SPEAKERS A/B

STATION

TAPE 2 MONITOR

TREBLE

20
20
22
23
26
20
21
23
20
22
27
22
22
20
23
20
22
20, 24
20

TUNING

TUNING SELECT

TV/SAT

VCR

VIDEO

VIDEO INPUT

VOLUME

21

21
20
20, 25
20
11
20

43

31-3046.fm Page 44 Monday, January 29, 2001 12:43 PM

This product is warranted by RadioShack against manufacturing defects in material and workman­ship under normal use for two (2) years from the date of purch ase from RadioShack company­owned 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 LIABIL­ITY OR RESPONSIBILITY TO CUSTOMER OR ANY OTHER PERSON OR ENTITY WITH RE­SPECT 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 WAR­RANTY, INCLUDING, BUT NOT LIMITED TO, ANY DAMAGES RESULTING FROM INCONVE­NIENCE, LOSS OF TIME, DATA, PROPERTY, REVENUE, OR PROFIT OR ANY INDIRECT,
SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, EVEN IF RadioShack HAS BEEN AD­VISED OF THE POSSIBILITY OF SUCH DAMAGES.
Some states do not allow the limitations on how long an implied warranty lasts or the exclusion of in­cidental 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 o ption, un­less 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 prod ucts, and products on which a refun d is made, become the prop­erty of RadioShack. New or reconditi oned 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 instal lation 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) transpor ta tion, shippin g 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

Limited Tw o-Year Warranty

We Service What We Sell 3/97

RadioShack

A Division of Tandy Corporation

Fort Worth, Texas 76102

06A99 Printed in Indonesia

<ARB7198-A>