JVC TH-A25 manual Surround Mode Introduction, Dolby Digital and DTS Digital Surround

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Surround Mode Introduction

You can use the following surround to reproduce a realistic sound field.

•Multichannel Surround—Dolby Digital and DTS Digital Surround

•Dolby Pro Logic II modes

■Dolby Digital and DTS Digital Surround

To enjoy surround effectively, all the speakers need to be connected and activated.

Dolby Digital*

Used to reproduce multichannel sound tracks of the software

encoded with Dolby Digital ().

Dolby Digital encoding method (so-called discrete 5.1 channel digital audio format) records and digitally compresses the left front channel, right front channel, center channel, left surround channel, right surround channel, and LFE channel signals (total 6 channels, but LFE channel is counted as 0.1 channel. Therefore, called 5.1 channel).

Since each channel is completely independent from the other channel signals to avoid interference, you can obtain much better sound quality with much stereo and surround effects.

When the system detects Dolby Digital signals, the indicator lights up on the display.

DTS Digital Surround**

Used to reproduce multichannel sound tracks of the software

encoded with DTS ( or ).

DTS Digital Surround is another discrete 5.1 channel digital audio format available on CD, LD, and DVD software.

Compared to Dolby Digital, audio compression rate is relatively low. This fact allows DTS Digital Surround format to add breadth and depth to the reproduced sounds. As a result, DTS Digital Surround features natural, solid and clear sound.

When the system detects DTS signals, the indicator lights up on the display.

■Dolby Pro Logic II modes

Dolby Pro Logic II*

Dolby Pro Logic II is the multichannel playback format to decode any 2 channel (stereo) sources—either digital or analog—into 5.1 channel.

Matrix-based encoding/decoding method for Dolby Pro Logic II makes no limitation for the cutoff frequency of the rear treble and enables stereo rear sound compared to conventional Dolby Pro Logic.

Dolby Pro Logic II enables to reproduce spacious sound from original sound without adding any new sounds and tonal colorations. Dolby Pro Logic II has four modes—Music mode, Movie mode, Matrix mode, and Pro Logic mode:

Pro Logic II Music (PLII MUSIC)—suitable for reproduction of any 2 channel stereo music sources. You can enjoy wide and deep sound by using this mode.

Pro Logic II Movie (PLII MOVIE)—suitable for reproduction of Dolby Surround encoded sources bearing the mark DOLBY SURROUND . You can enjoy sound field very close to the one created with discrete 5.1 channel sounds.

Pro Logic II Matrix (PLII MATRIX)—suitable for reproduction

of monaural sources.

Pro Logic (PRO LOGIC)—suitable for reproduction of sources encoded with Dolby Surround.

•When one of Dolby Pro Logic II modes is activated, the

indicator lights up on the display.

*Manufactured under license from Dolby Laboratories. “Dolby,” “Pro Logic,” and the double-D symbol are trademarks of Dolby Laboratories. Confidential Unpublished Works. ©1992–1997 Dolby Laboratories. All rights reserved.

**“DTS” and “DTS Digital Surround” are trademarks of Digital Theater Systems, Inc.

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Contents TH-A25 If in Doubt Consult a Competent Electrician Important for Laser Products Above ALL Table of Contents Center Unit Parts IdentificationFront Panel DisplayRemote Control Remote ControlChecking the Supplied Accessories Before Installation Putting Batteries in the Remote ControlGetting Started Replace the coverConnecting the FM and AM Antennas FM antenna connectionAM antenna connection Getting Started Speaker Layout DiagramConnecting speaker cords to the speakers Connecting the SpeakersConnecting speaker cords to the center unit When setting the speakersConnecting Audio/Video Component Turn the power off to all components before connectionsTV connection VCR Audio component connectionBasic Disc Operations Turn On the PowerLoad a Disc MutingTo turn off the sounds temporarily Start PlaybackTo activate Dolby Digital or DTS Digital Surround DVDBasic Disc Operations Basic Tuner Operations Select the BandTune into a Station Adjusting the Display Brightness Turning Off the Power with the TimerOther Basic Operations Enjoying Sounds from the External ComponentAdjusting the Sound Using the Test ToneCreating Realistic Sound Fields Press PL II repeatedly to activate all SpeakersPress 3 or 2 to adjust the output balance -00 to -06, OFF Balance and the adjustment bar Appear on the TV screenBasic sound adjustment procedure Creating Realistic Sound FieldsDolby Digital and DTS Digital Surround Surround Mode IntroductionDolby Digital DTS Digital SurroundTo activate Digital Multichannel Surround Activating the Surround ModeTo activate Dolby Pro Logic II modes Plii MatrixIf appears on the TV screen when pressing a button, Disc Introduction-DVD/VCD/SVCD/CDDisc structure-DVD, Video CD VCD/SVCD and Audio CD CD Disc Playback Using the On-Screen BarShowing the On-Screen Bar On ScreenPress 3 / 2 repeatedly to select Press on ScreenPress 5 / ∞ repeatedly to select Press EnterSelecting the Audio Languages Disc PlaybackPress 3/2 repeatedly to select Press 5/∞ repeatedly to select the desired languageSelecting the Multi-Angle Views Selecting the Playback ChannelFor DVD For VCD/SVCD/CDDisc Menu-Driven Playback Press Menu or TOP MenuEnter Press 3/2 to select one of the icons below Moving to a Particular Portion DirectlyPress the number buttons to Track, or playing timeRepeating Playback Press 5/∞ repeatedly to selectPoint Press Step once during playback Special Picture PlaybackPress Step repeatedly to advance the picture frame by frame Press ZoomMP3/JPEG Introduction Starting Playback MP3/JPEG PlaybackInsert a disc Showing the On-Screen BarMP3/JPEG Playback Operations Using the On-Screen DisplayOn-screen display To start playback of the selected fileBrowsing Pictures in the Current Folder Selecting a Particular File/Folder DirectlyPress Menu Press 3/2/5/∞ to select Desired picture, then pressTuner Operations Tuning in StationsSelecting the FM Reception Mode Using Preset TuningUsing the RDS Radio Data System To Receive FM Stations What information can RDS signals provide?Tuner Operations Searching for a Program by PTY Codes Switching to a Selected ProgramJazz music Description of the PTY codesSetting Up the DVD Preferences Setting the System PreferencesChoice Setting Up the DVD Preferences Press 5/∞ to select the desired setting Setting the PreferencesBasic procedure to set up preferences Languages you can select on this menuTo change the password PWD box to verify the passwordLevel, then press Enter BoxTo release the parental lock temporarily No Disc appears on the displayPress and hold 7 for more than 5 seconds Operating TV Control TVTV/VIDEO Cleaning the unit MaintenanceGeneral Notes Handling DiscsProblem TroubleshootingSolution Possible CauseAmplifier section SpecificationsVideo section Tuner sectionTH-A25 DVD Digital Cinema System
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TH-A25 specifications

The JVC TH-A25 is a compact home theater system that combines innovative sound technologies with user-friendly features, making it an excellent choice for those looking to enhance their audio-visual experience at home. One of the standout aspects of the JVC TH-A25 is its impressive surround sound capabilities, which allow users to immerse themselves in a three-dimensional audio environment. This model features advanced audio processing technology designed to enhance the clarity and depth of sound, creating a cinematic experience right in your living room.

The system is equipped with a powerful subwoofer that delivers deep bass, enriching music and movie soundtracks alike. With a total output power of around 300 watts, the JVC TH-A25 ensures that the audio is loud enough to fill medium-sized rooms while maintaining sound quality. The presence of multiple audio channels allows for versatile speaker placement, enhancing the overall soundstage.

Another notable feature of the JVC TH-A25 is its compatibility with various audio formats. This system supports Dolby Digital and DTS decoding, meaning you can enjoy a wide range of movie and music formats without losing audio fidelity. Additionally, the built-in Bluetooth functionality enables users to stream music directly from their smartphones or other devices, offering convenience and modern connectivity options.

The design of the JVC TH-A25 is both sleek and stylish, fitting seamlessly into any home decor. The compact form factor of the speakers makes them easy to integrate into different setups without taking up much space. The intuitive remote control makes it easy to adjust settings, manage volume, and switch between input sources with ease.

Moreover, the setup process is straightforward, allowing users to get started with their home theater experience quickly. The simple wiring and clear user manual ensure that even those who are not tech-savvy can enjoy their new system without frustration.

In summary, the JVC TH-A25 is designed to deliver an engaging audio experience with its advanced surround sound technology, powerful bass, and modern connectivity features. Its compact design and user-friendly interfaces make it suitable for any home theater enthusiast looking to elevate their entertainment experience.
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