Optimus STAV-3790 User Manual (English)

Questions and Answers:

M
Melissa DiazAug 14, 2025
Why is my Optimus STAV-3790 Receiver having a high noise level?
- C
  Charles SanchezAug 14, 2025
  If your Optimus Receiver is producing a high level of noise, there might be several reasons: * The station might not be correctly tuned, so try adjusting the tuning. * The antenna might not be connected; ensure it is properly connected. * The FM antenna could be coiled or not pointing correctly; stretch it taut and reposition it. * The AM loop antenna might not be pointing correctly; adjust its position. * The noise could be coming from another electrical appliance; try using an AC line noise filter.
B
beth95Aug 18, 2025
Why is my Optimus STAV-3790 remote control not working?
- H
  hernandezelizabethAug 18, 2025
  If your Optimus Receiver remote control isn't working, it could be due to these reasons: * The remote might be set to control another device. Try pressing the CONTROL MODE button for the device you want to control. * The batteries might be weak. Replace them with new ones.
J
Justin MillerAug 21, 2025
Why is there no sound coming from my Optimus STAV-3790 Receiver?
- C
  Christopher AlvarezAug 21, 2025
  If your Optimus Receiver isn't producing any sound, here are a few things to check: * Make sure all connections are correct. * Ensure the mute function is not activated by pressing the MUTING button. * Check that the volume is turned up. * Verify that the speaker wires are properly connected. * Confirm that the speakers are turned on by pressing the SPEAKER button so SP A appears on the display and disconnect any connected headphones. * Ensure the TAPE 2 function is not engaged by pressing the TAPE 2 button so TAPE 2 clears from the display.
M
Madison ZunigaAug 25, 2025
How to fix Optimus STAV-3790 when power does not turn on?
- N
  nicolestephensAug 25, 2025
  If your Optimus Receiver's power does not turn on, it could be due to the following reasons: * The power cord might be disconnected. Ensure it is properly plugged in. * The protection circuit might be activated. Unplug the power cord and then plug it in again.
F
Faith SantosAug 28, 2025
What to do if Optimus STAV-3790 does not respond to button presses?
- J
  jamesjacksonAug 28, 2025
  If your Optimus Receiver isn't responding to button presses, it might be due to static discharge. Try unplugging the power cord and then plugging it back in. If static electricity is a recurring issue, use the remote control as much as possible.
B
becklarryAug 31, 2025
What to do if there is no picture when selecting a video source on Optimus Receiver?
- J
  Julia MartinezAug 31, 2025
  If you're not getting a picture when you select a video source on your Optimus Receiver, it could be because: * The selected video source is not set correctly. You should correct the problem with the selected video source. * The connections are incorrect. Check and correct the connections.
J
Jennifer BrooksSep 3, 2025
Why doesn't my Optimus STAV-3790 Receiver remote control my cassette deck or CD player?
- X
  xmooreSep 3, 2025
  If your Optimus Receiver's remote does not control the cassette deck or CD player, it could be due to these reasons: * The cassette deck or CD player might not be compatible. This feature only works with Optimus Professional Series components. * The control cable might not be plugged in. Properly connect the control cable. * The audio cables might not be plugged in. Properly connect the audio cables.
B
brandon40Sep 7, 2025
Why does automatic tuning not stop when searching for stations on my Optimus STAV-3790 Receiver?
- B
  bernardheatherSep 7, 2025
  If the automatic tuning on your Optimus Receiver doesn't stop when searching for stations, it's likely because the stations are too weak. Try using a better antenna.
T
Thomas SuarezSep 10, 2025
Why can't I make copies of video tapes with my Optimus STAV-3790 Receiver?
- F
  Felicia FrenchSep 10, 2025
  If you cannot make copies of video tapes with your Optimus Receiver, it might be because: * The tapes are protected by a copy protection method, meaning you cannot make a good copy. * The video connections are incorrect. Check and correct the connections.

Optimus STAV-3790 Specifications

General

Speaker load impedance	8 ohms
Power output	100 watts per channel into 8Ω (stereo)
Frequency response	20Hz to 20kHz
Input sensitivity	2.5mV (MM)
Tuning range	FM: 88-108 MHz, AM: 530-1710 kHz

Summary

Introduction to the Optimus STAV-3790 Receiver

Digital Synthesized Tuner Functionality

Precisely tunes to AM and FM stations, enhancing radio reception.

30 Station Memory Locations

Store and recall up to 30 AM/FM station frequencies for quick access.

Midnight Listening Mode Operation

Enjoy surround sound at low volumes without disturbing others.

Optical Digital Output Capability

Outputs digital source signals directly to recording devices like MD or CD-R.

Automatic AM/FM Tuning

Automatically searches for the next available AM or FM station.

Tape Monitoring Feature

Listen to the actual recording if your tape deck has a monitoring feature.

Built-In Protection Circuits

Protects the receiver from power surges and short circuit damage.

Integrated Remote Control Usage

Control the receiver and other compatible components with one remote.

Important Safety Instructions

General Operational Safety Precautions

Warnings on water, ventilation, power sources, liquids, servicing, and heat.

Antenna and Electrical Safety Guidelines

Advice on power lines, grounding, polarization, and safe electrical connections.

Preparing Your Receiver: Speaker Placement

Optimizing Speaker Positioning

Guidelines for placing speakers to achieve the best sound quality and stereo effect.

Preparing Your Receiver: Speaker Connections

Connecting Speakers and Preparing Wires

Instructions for connecting speakers and preparing speaker wires for connection.

Setting the Impedance Selector Switch

Properly setting the impedance switch based on speaker Ohm ratings.

Preparing Your Receiver: Front Speaker Setup

Connecting Front Speakers to Receiver

Step-by-step guide for connecting front left and right speakers.

Preparing Your Receiver: Surround Sound Setup

Connecting Surround and Center Speakers

Instructions for connecting surround and center speakers for immersive audio.

Connecting a Subwoofer Amplifier

How to connect a subwoofer for enhanced bass response and depth.

Preparing Your Receiver: Connecting Program Sources

Connecting Audio and Video Sources

Connecting CD players, MD recorders, and cassette decks to the receiver.

Preparing Your Receiver: Connecting Video Sources

Connecting Various Video Sources

Connecting VCRs, DVD players, and satellite receivers to the receiver's inputs.

Preparing Your Receiver: Device Connections

Connecting Camcorders and Video Monitors

Connecting camcorders to front jacks and monitors to video output.

Understanding DVD 5.1-Channel Inputs

Using 5.1-channel inputs for DVD players and multi-channel decoders.

Preparing Your Receiver: Digital Audio Connections

Digital Audio Connection Methods

Connecting digital audio sources via fiber-optic or coaxial cables.

Preparing Your Receiver: Antenna Connections

Connecting AM and FM Antennas

Instructions for connecting AM loop and FM antennas for optimal reception.

Preparing Your Receiver: Outdoor Antenna Installation

Connecting an Outdoor FM Antenna

Steps to connect an outdoor FM antenna using 75-ohm coaxial cable.

Preparing Your Receiver: Remote Control and Power Setup

Using One Remote for Multiple Components

Controlling multiple Optimus components with the receiver's remote.

Installing Remote Control Batteries

Procedure for installing batteries in the remote control unit.

Preparing Your Receiver: Power Connections

Using the Receiver's AC Power Outlet

Guidelines for using the receiver's switched AC outlet for other devices.

Connecting the Receiver to AC Power

How to safely connect the receiver to a standard AC power outlet.

Initial Setup Guide

Basic Receiver Setup Procedure

Steps to set up and adjust the receiver for optimal surround sound.

Speaker Size and Subwoofer Configuration

Configuring speaker sizes and the subwoofer on/off status.

Initial Setup: Sound Configuration

Crossover Frequency and LFE Attenuator Settings

Adjusting crossover frequency and LFE attenuator for bass management.

Low Cut Filter and Speaker Distance Settings

Setting low cut filter and speaker distances for optimal audio.

Initial Setup: Advanced Configuration

Dynamic Range Control and Digital Input Assignment

Adjusting dynamic range and assigning digital inputs for components.

Basic Operation: Receiver Functions

General Receiver Operation and Controls

Using power, volume, source selection, tone controls, and speaker levels.

Basic Operation: Radio Tuning

Tuning AM/FM Radio Stations

Methods for manual, automatic, and direct access radio tuning.

Basic Operation: Audio Modes and Listening

Memory Tuning and MPX Mode Selection

Storing radio presets and selecting FM stereo or mono reception.

Using Headphones Safely

Connecting headphones and important safety advice for listening.

Basic Operation: Audio Adjustments

Muting, Loudness, and Bypassing Sound Controls

Temporarily muting sound, using loudness, and bypassing audio controls.

Display Brightness and Signal Input Switching

Adjusting display brightness and switching analog/digital inputs.

Using the ATT (Attenuation) Function

Attenuating strong signals to prevent distortion during analog operation.

Cassette Deck and VCR Features

Using Tape Monitor Functions

Operating MD/TAPE 1 and TAPE 2 MONITOR for cassette playback.

Dubbing Cassette Tapes

Copying cassette tapes between decks via the receiver.

Cassette Deck and VCR Features: Video Operations

Playing and Copying Video Tapes

Playing and copying video tapes using connected VCRs.

Advanced Sound Options

Dolby Digital and Pro Logic Surround Modes

Understanding and enabling Dolby Digital and Dolby Pro Logic Surround modes.

DSP Effects for Immersive Listening

Selecting DSP effects to simulate concert halls, jazz clubs, or theaters.

Advanced Sound Options: Calibration and Modes

Test Tone for Speaker Level Adjustment

Using test tones to balance speaker volume levels.

Dolby Digital and DVD 5.1 Playback

Playing sources with Dolby Digital or DVD 5.1-channel audio.

Midnight Mode and Format Indicators

Using Midnight Mode and understanding program format indicators.

Using the Remote Control: Setup and Modes

Programming Control Mode Buttons

Setting up the remote to control other audio/video devices.

Using the Remote Control: Receiver Operations

Receiver/Amplifier Control Button Functions

Explanation of remote buttons for receiver and amplifier operations.

Using the Remote Control: Component Operations

CD/MD Recorder and Cassette Deck Control

Operating CD/MD recorders and cassette decks with the remote.

Using the Remote Control: DVD/LD Operations

DVD/LD Player Control Functions

Controlling DVD and LD players using the remote control.

Using the Remote Control: VCR and TV Operations

VCR and TV/CATV Control Functions

Operating VCRs and TVs/CATV tuners with the remote control.

Using the Remote Control: Satellite and Background Control

Satellite Receiver and Background Control

Operating satellite receivers and controlling devices in the background.

Using the Remote Control: Device Code Lists

Remote Codes for DVD, LD, and SAT Devices

List of pre-programmed codes for controlling DVD, LD, and SAT devices.

Using the Remote Control: Device Code Lists (Continued)

Remote Codes for VCR and Tape Devices

List of pre-programmed codes for controlling VCRs and tape decks.

Using the Remote Control: Device Code Lists (Continued)

Remote Codes for CD and TV Devices

List of pre-programmed codes for controlling CD players and TVs.

Using the Remote Control: Device Code Lists (Continued)

Remote Codes for CATV and MD Devices

List of pre-programmed codes for controlling CATV and MD devices.

Troubleshooting the Receiver

Common Problems and Suggested Solutions

Table of common issues and their suggested solutions for the receiver.

Receiver Care and Maintenance

Tips for Receiver Care and Maintenance

Guidelines for keeping the receiver clean, dry, and in good working order.

FCC Compliance Information

Managing Radio or TV Interference

Information on identifying and resolving radio or TV interference from the receiver.

Receiver Specifications: Amplifier and Video

Amplifier and Video Section Specifications

Technical details on amplifier power, input sensitivity, and video specs.

Receiver Specifications: Tuners and General

Tuner and General Specifications

Specifications for FM/AM tuners, power, dimensions, and weight.

Limited Warranty Information

Two-Year Limited Warranty Terms

Details of the product's two-year limited warranty, coverage, and exclusions.

Related product manuals

Optimus STAV-3790 User Manual

Table of Contents

Questions and Answers:

Optimus STAV-3790 Specifications

Summary

Introduction to the Optimus STAV-3790 Receiver

Digital Synthesized Tuner Functionality

30 Station Memory Locations

Midnight Listening Mode Operation

Optical Digital Output Capability

Automatic AM/FM Tuning

Tape Monitoring Feature

Built-In Protection Circuits

Integrated Remote Control Usage

Important Safety Instructions

General Operational Safety Precautions

Antenna and Electrical Safety Guidelines

Preparing Your Receiver: Speaker Placement

Optimizing Speaker Positioning

Preparing Your Receiver: Speaker Connections

Connecting Speakers and Preparing Wires

Setting the Impedance Selector Switch

Preparing Your Receiver: Front Speaker Setup

Connecting Front Speakers to Receiver

Preparing Your Receiver: Surround Sound Setup

Connecting Surround and Center Speakers

Connecting a Subwoofer Amplifier

Preparing Your Receiver: Connecting Program Sources

Connecting Audio and Video Sources

Preparing Your Receiver: Connecting Video Sources

Connecting Various Video Sources

Preparing Your Receiver: Device Connections

Connecting Camcorders and Video Monitors

Understanding DVD 5.1-Channel Inputs

Preparing Your Receiver: Digital Audio Connections

Digital Audio Connection Methods

Preparing Your Receiver: Antenna Connections

Connecting AM and FM Antennas

Preparing Your Receiver: Outdoor Antenna Installation

Connecting an Outdoor FM Antenna

Preparing Your Receiver: Remote Control and Power Setup

Using One Remote for Multiple Components

Installing Remote Control Batteries

Preparing Your Receiver: Power Connections

Using the Receiver's AC Power Outlet

Connecting the Receiver to AC Power

Initial Setup Guide

Basic Receiver Setup Procedure

Speaker Size and Subwoofer Configuration

Initial Setup: Sound Configuration

Crossover Frequency and LFE Attenuator Settings

Low Cut Filter and Speaker Distance Settings

Initial Setup: Advanced Configuration

Dynamic Range Control and Digital Input Assignment

Basic Operation: Receiver Functions

General Receiver Operation and Controls

Basic Operation: Radio Tuning

Tuning AM/FM Radio Stations

Basic Operation: Audio Modes and Listening

Memory Tuning and MPX Mode Selection

Using Headphones Safely

Basic Operation: Audio Adjustments

Muting, Loudness, and Bypassing Sound Controls

Display Brightness and Signal Input Switching

Using the ATT (Attenuation) Function

Cassette Deck and VCR Features

Using Tape Monitor Functions

Dubbing Cassette Tapes

Cassette Deck and VCR Features: Video Operations

Playing and Copying Video Tapes

Advanced Sound Options

Dolby Digital and Pro Logic Surround Modes

DSP Effects for Immersive Listening

Advanced Sound Options: Calibration and Modes

Test Tone for Speaker Level Adjustment

Dolby Digital and DVD 5.1 Playback

Midnight Mode and Format Indicators

Using the Remote Control: Setup and Modes

Programming Control Mode Buttons

Using the Remote Control: Receiver Operations