Pioneer VSX-D908TX-G manual Techno Tidbits and Problem-solving, Dolby Digital, Laser disc format

Page 76

Techno Tidbits and Problem-solving

Dolby Digital

Dolby Digital is a compression format which records the sound of 6 channels of the theater surround system (Dolby Digital) on the movie film digital track. Of the 6 channels, the sub woofer channel is intended for bass only, and because the frequency range is smaller than the main channel, it is expressed as 5.1 channel.

Dolby Digital is the name of the Dolby surround multi-channel digital system that was developed after the Dolby Surround System and Dolby Pro Logic Surround System.

5.1 channel digital

4 channel analog

surround track

sound track (Matrix)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Dolby

Digital encoding

Dolby Digital for movie films

The number of movies made using Dolby Digital since 1992 has exceeded 300 and continues to increase. For compact disc players and laser disc digital sounds, 16 bits are used to sample the original analog audio waveform and sampling is carried out 44,100 times every second. However, because an enormous amount of recording signal data is required for the multi channel system with this method, AC-3 is used to compress the data.

In reproducing audio signals, the smaller the bit number used, the lower the sound quality. With AC- 3, drop in auditory sound quality is prevented by using masking technology and digital filtering technology based on the human auditory characteristics.

Laser disc format

Laser discs are now available on the market in large numbers. This means that the recording of different format audio signals on the laser disc raises the important question of compatibility with existing laser discs. Dolby Digital tracks on Laser discs record signals using the space of one analog audio channel so it will maintain compatibility with existing discs and players.

As shown in the following figure, the digital audio sounds of Dolby Digital discs can be played back as currently done. Analog sounds are played back by using the other channel without the Dolby Digital signals for monaural audio signals.

Analog sound

 

Dolby Digital

 

 

(Monaural)

 

 

sound

 

 

 

 

Digital

 

 

 

 

 

 

Video

 

 

 

 

 

 

sound

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

4

6

8

10

12

14 MHz

 

 

 

 

 

 

Frequency

Comparison with Dolby Pro Logic Surround

Dolby Digital is also known as the 5.1 channel system. It is equipped with 5 channels (front left, front right, center, surround left, surround right) in the frequency range from 20 Hz to 20 kHz and an independent Low Frequency Effect (LFE) channel. The sub woofer channel is also called Low Frequency Effect (LFE).

The sub woofer channel can be used as desired to enjoy strong bass sounds.

The table on the next page shows the comparison with Dolby Pro Logic Surround effects.

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Contents VSX-D938TXVSX-D908TXVSX-D908TX-G Information to User VentilationChannel Step Setting VSX-D908TX/D908TX-G only TWO Voltage Selector Switches VSX-D908TX/ D908TX-G onlyFM 100 kHz, AM 10 kHz FM 50 kHz, AM 9 kHzFeatures Table of Contents Checking the Supplied Accessories How to Use This ManualBefore You Start Opening the Front PanelLoading the batteries Preparing the Remote ControlAA drycell batteries AA IEC LR6 × Connecting Your Equipment Cassette deck placementAudio Components Audio cordsFront Video ComponentsAudio/Video cords Digital audio cords/Optical cables Digital ConnectionsDigital audio cord Optical cable Or standard video cord Example of connection using a DVD/LD or LD player VSX-D938TX modelVSX-D908TX/D908TX-G models DVD/LD player Or LD playerExternal Decoder Input Components equipped with 5.1 channel analog output jacksUsing external antennas AntennasAM loop antenna To improve FM receptionPowered sub woofer SpeakersFront Speakers a Rear SpeakersFirst turn the receiver off, then press the power button Speaker impedanceSpeaker terminals While holding down the Speakers buttonSpeaker placement Front CenterRight Sub WooferConnecting Additional Amplifiers Power Connections AC OutletsSwitched Total 100 W MAX Unswitched 100 W MAXDisplays and Controls DisplayProgram Format indicator = Tuner indicatorsSpeaker indicators @ H.P headphones indicatorFront Panel VSX-D938TX = Master Volume Master Volume Press to switch the receiver on or into Standby modeFront Panel VSX-D908TX/D908TX-G Display See p.18 Remote sensor@ Midnight Mode button See p.46 $ Signal Select button See p.42= External Decoder in button See p.47 ~ Direct buttonRemote Control System Setup button Remote Setup button# Master Volume button Signal Select buttonSurround Sound Set Up Switching video system between PAL and NtscOn Screen Display LoudnessSetting Up for Surround Sound Press System Setup buttonSystem Setup Menu appears on your TV screen Turn on the receiver and your TVGo on to the next page to continue set up Select Speaker Setting with the 5´ buttons Speaker settingPress Enter Front default setting is Large Center default setting is LargeSurround default setting is Large SUB Woofer default setting is YESChannel delay Default setting is 3.0 mIf you want to change a setting before proceeding Next, proceed to Channel Level belowSelect aTEST Tone mode Channel levelAuto automatic Test Tone Manual manual Test ToneAuto mode Manu modeIf you are using a Sound Pressure Level SPL meter To exit before outputting the Test ToneCrossover network Select Exit to return to the System Setup MenuSpecify the crossover frequency for your small speakers Bass peak level manager Select Setting Start and press EnterPress Enter to return to the previous screen Range control Digital-in select Choose a Digital in and assign it an input functionBasic Playback Playing Sources with Stereo SoundOn the receiver StandbyStandard mode Home THX Cinema modeMpeg mode VSX-D938TX only Sound ModesStereo mode DSP modesHall JazzSelect the sound mode Selecting a Sound ModeSurrround operation Playing Sources with Dolby Digital or DTS Sound Using Mpeg audio discs VSX-D938TX only Switching ANALOG/DIGITAL signal input Auto Analog AC-3 RF DigitalAnalog Digital AnalogReducing noise during playback Digital NR function Listening in Midnight Listening mode Each press switches Midnight Listening mode on or offPress Midnight MidnightExternal decoder playback front panel only 96kHz/24bit performanceVSX-D938TX Press External Decorder External DecorderAdjusting bass and treble tone control front panel only Listening in Loudness mode front panel onlyDirect playback front panel only Press FL Dimmer Adjusting the brightness of the display front panel onlyFL Dimmer VSX-D938TX Automatic and Manual Tuning Using the TunerMPX mode Direct Access Tuning Using the front panel Memorizing Frequently Used StationsTune in the desired station Press Memory to activate the memory functionUsing the remote control Recalling Memorized StationsUse the number buttons to select the channel you want To skip through each channel in orderRemote Control of Other Components Setting Up the Remote Control to Control Other ComponentsRecalling preset codes Press Remote SetupPress Remote Setup to exit the Preset Recall Setup mode Press Multi Control for the component you wantTo control Press 5´ repeatedly to display the namePress Multi Control for the component you want to control To cancel Learning Setup modeSelected button continues to blink Press Remote Setup to exit the Learning Setup Press the button to be programmedMode To program additional operations for the current componentRemote Controlling Other Components DVD or LD player operationsSource Enter Side A/BChannel -/+ VCR and DVD video recorder operationsENTERTV/VCR CD player operations DiscYou can also use this button when selecting track Allows you to change the display modeMD operations Disc DISP/CHARASTB Satellite Tuner operations GuideExit MenuSTB DTV operations DTV MenuDTV ON/OFF EnterTV operations ´7´3´8´1 BLUE/GREEN/REDYellow Use to select a TV channelCassette deck operations Recording from Audio Components Using Other FunctionsRecord monitor Tape 2 Monitor Signal Select to digital Recording from Digital Audio ComponentsPrepare the source you want to record and set Button on the front panel and choose DigitalPut the receiver in that function. Set the Signal Or AC-3 RF VSX-D938TX only signals is not possibleRecording from Video Components First, decide the component you would like to recordTo cancel Multi Operation Setup mode Multi OperationsPress Function that you want to use to start Multi OperationPress Multi Operation on the remote control Press Remote Setup to exit the Multi Operation Setup modePerforming multi operations Using the system off button System OFFSetting Up the Direct Function Remote back light Press and hold both Remote SetupOFF MID MAX Resetting the Remote Control Erasing the multi operationsErasing the learned remote control commands Erasing all signals learned and preset codesTechno Tidbits and Problem-solving Dolby DigitalLaser disc format Comparison with Dolby Pro Logic SurroundDolby Digital DTSDolby Pro Logic SurroundTHX Mpeg Audio VSX-D938TX onlyVSX-D938TX Preset Code ListDevice Manufacturer Code VCR Perdio Tape YamahaPhonola PortlandFormenti Protech SchneiderFujitsu GECNEI SonokoNikkai SonolorVSX-D908TX/D908TX-G Troubleshooting Symptom Cause RemedyFM broadcasts AM broadcastsSymptomCause Specifications VSX-D938TX Taiwan model/D908TX/ D908TX-G VCR 1 REC, VCR 2 REC, MD/TAPE 1 REC, Tape 2 RECPower cord Caution 99E00EF0P00

VSX-D908TX, VSX-D908TX-G, VSX-D938TX specifications

The Pioneer VSX-D908TX, VSX-D938TX, and VSX-D908TX-G are notable entries in the realm of audio-video receivers, offering a range of advanced features and technologies that cater to both audiophiles and home theater enthusiasts. Each model encapsulates Pioneer’s commitment to audio excellence and cutting-edge technology.

The VSX-D908TX stands out with its robust power handling capabilities, delivering multiple channels of amplification for immersive sound experiences. With a power rating of 100 watts per channel across 5 channels, users can enjoy rich, detailed audio whether they're watching movies or listening to music. This model also incorporates Dolby Digital and DTS decoding, allowing for detailed surround sound reproduction. The onboard Room Calibration system helps tailor the audio output to suit the unique acoustics of any room, enhancing the listener's experience.

The VSX-D938TX takes this foundation further by providing an impressive 110 watts per channel across 7 channels. This allows for even greater sound staging, making it an excellent choice for those looking to build a more expansive home theater system. In addition, it boasts advanced video processing features, including support for various video formats and the capability to upscale standard-definition content, ensuring that viewers can enjoy their favorite shows and movies in the best possible quality. Its connectivity options further enhance versatility, offering multiple HDMI inputs, component, and composite video connections.

The VSX-D908TX-G shares many features with its counterparts but introduces a sleek, modern aesthetic that appeals to contemporary users. Its user-friendly interface is complemented by a comprehensive remote control that simplifies navigation through settings and inputs, making the overall experience comfortable and intuitive.

All three models embody Pioneer’s proprietary technologies, including Advanced Convergence technology, which enhances image clarity and reduces artifacts in digital content. Additionally, they support various audio formats like MP3, WMA, and AAC, ensuring compatibility with a range of digital sources.

Ultimately, the Pioneer VSX-D908TX, VSX-D938TX, and VSX-D908TX-G cater to a diverse audience, providing robust power, advanced decoding capabilities, and user-friendly features, making them formidable additions to any home entertainment setup. These receivers not only enrich the listening experience but also align seamlessly with modern home theater demands.
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