Meridian Audio 568 manual DSP presets, Multi-channel digital sources, Dolby Digital

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DSP presets

The digital surround processor provides an extremely comprehensive range of digital signal processing options for decoding both analogue and digital audio signals and processing them for multi-channel reproduction. These are referred to as DSP presets, and are designed to provide the best results with a range of different types of music and film material.

In addition to selecting built-in DSP presets, the digital surround processor allows you to create your own presets based on the standard ones. For example, you may want to add more delay to the rear speakers to create a more spacious sound. You can store your modified preset with a name of your choice, and recall it for use at a later date.

This section gives information about each of the built-in DSP presets, and gives recommendations for the best preset to choose for different types of material.

Multi-channel digital sources

Several alternative multi-channel digital formats are currently available which encode up to eight different channels onto a digital signal. Four alternatives are currently in use: Dolby Digital, DTS, MPEG Surround, and MLP. However, the 568 has been designed so that it can be upgraded by downloading a software update, to cater for new formats as they are introduced.

Dolby Digital

Dolby Digital, previously called AC-3, is the preferred sound format for DVD video, and is widely used on LaserDisc soundtracks. It is also the audio standard for US digital television.

DTS

DTS uses an audio compression technique to encode five channels of audio onto a digital signal. The DTS format is used to encode multi-channel film soundtracks on LaserDiscs and DVD video discs.

Introduction

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Contents Meridian 568 Digital Surround Processor Meridian 568 Digital Surround Processor User Guide Sales and service in the USA Contents DSP presets Setting up the digital surround processorTroubleshooting 105 Configuring the digital Surround processor Using a computerGlossary115 Preface Introduction Digital Signal Processing 568 Digital Surround ProcessorMeridian High Resolution MHR Series communicationsSample configurations Meridian Compact TheatreMeridian Digital Theatre Specification and accessories SpecificationMeridian 511 S-patch Box Available accessoriesMeridian 519 Demodulator Fan kit Rack mount kitMulti-channel digital sources DSP presetsDolby Digital Mpeg Surround Multi-channel sources encoded onto two channelsPro Logic Conventional stereo sources TV LogicTHX Cinema AmbisonicSpecial DSP presets Using the digital surround processor Using the digital surround processor Front panelMeridian System Remote Quick guide to operating the 568 with the remote Selecting a source To switch on from standbyTo select a source To switch to standby Adjusting the volume To restore the soundTo change the volume To mute the soundChanging the DSP preset To change the DSP presetChanging the display To change the displayUsing the digital surround processor Defining your own presets To lock the menus Locking and unlocking the menusTo unlock the menus Using a Meridian DSP loudspeaker Changing the DSP parametersTo change a DSP parameter Standard parametersStandard parameters OSDChanging treble, bass, or phase To change the absolute phaseTo change the bass To change the trebleChanging the listening position To move the listening position to the left or rightAdjust their level until Changing the integration of the centre To change the relative delay of the centre speakerTo change the relative level of the centre speaker To change the relative delay of the rear or side speakers Changing the spaciousness of the soundChanging the lip sync and on-screen display To adjust the lip syncTo change the position of the on-screen display Changing the DSP preset for a source To change the DSP preset for a sourceDefining your own presets To save the preset settingsSto.ser To clear a user-defined preset DSP presets Logic DSP presets Pro LogicTHX Cinema Pro Logic and THX Cinema DSP preset parametersTV Logic Mono DSP preset parameters TV Logic DSP preset parametersMono Music Music DSP presetsTrifield Music and Trifield DSP preset parameters Ambisonic Super StereoMusic Logic DSP preset parameters Ambisonic and Super Stereo DSP preset parametersMusic Logic Stereo and Direct DSP preset parameters DTS MusicMpeg Music Stereo and DirectDolby Digital Movie DSP presetsDolby Digital THX, DTS THX, Movie DSP preset parameters Using dynamic range controlUsing peak-level limiting Setting up the digital surround processor Unpacking Radio interferenceSafety warnings Positioning the digital surround processorTo avoid interference To avoid overheatingRear panel Connecting the digital surround processorVideo connections Digital audio inputs Analogue audio inputsCommunications connections Audio outputsOther connections Connecting video On-screen displayConnecting speakers To connect to Meridian DSP loudspeakersUp the digital surround processor To connect an active subwoofer eg Meridian M1500 or M2500 Connecting sources To connect to an analogue source eg Meridian 504 FM TunerTo connect to a DVD player eg Meridian DVD Player To connect to a LaserDisc playerTo connect to a 562 or Multimedia Controller Connecting to other Meridian equipment To connect to other Meridian 500 Series equipmentPage Choosing a standard setting Configuring To select a TypeStandard source settings DTS MpegUsing a Sound Pressure Level meter Using the calibration procedureCalibrating the system To start the calibration procedure To choose the distance unitsTo exit from the calibration procedure To move between the calibration testsCalibration tests LevelsDistance Display shows the speaker beingFine tuning Page Setting up subwoofers To turn on Sine/Sub modeTo turn off Sine/Sub mode To adjust the subwoofer crossover frequencyTo use the sinewave sweep test To change the sweep rateTo select other test signals To select the channelConfiguring the digital surround processor using a computer Meridian Configuration program PresetsSetup SourcesInstalling the Meridian Configuration program To install the Meridian Configuration programPlanning the configuration RequirementsTo run the Meridian Configuration To connect the serial cable Creating a new settings file To display the settings To enter your personal detailsTo display or edit the settings Setting up speakers To specify the speaker layoutMains Surrounds CentreSubwoofers To specify the speaker sizes Speaker protectionSubwoofer filtering and type To complete the speaker setupPeak-level limiting To set up sources Setting up sourcesTo configure the source options Configuring the digital surround processor using a computer Configuring the digital surround processor To set the advanced source optionsTo modify a built-in preset Configuring presetsTo set up presets To restore the DSP parameters to their defaults To create a user-defined presetTo delete a user-defined preset Changing the setup options To change the setup optionsConfiguring the digital surround processor using a computer Calibrating the settings with your system To store the settings to the digital surround processorTo save the settings To print a summary of settingsTo fetch the calibrated settings To calibrate the loudspeakersCreating a User Type To name the User TypeTo create additional User Types Click the Copy as new user type buttonTo copy settings between User Types To save the current settings Completing the configurationTo store the settings to the 568 Digital Surround Processor 104 Troubleshooting General operating problems Standby point not litRemote not working Erratic or unexpected system behaviourUnit is overheating Hum on analogue input Audio problemsThere is radio interference Audible hiss at high volume settings Crackling on optical inputsSound not clear There is a hiss when starting DTS LaserDiscsCentre not working Video problems Poor picture qualityMeridian Configuration program problems Preset options do not appear or are not availableService Service and guaranteeGuarantee 114 Absolute phase Controller Dolby Surround GlossaryAC-3 Aspect ratioLFE sub LayoutLimit Max SPLPreset Mono surroundsSource Steered surroundsSurroundType THXIndex 120 121 MHR Sources 124
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568 specifications

Meridian Audio is renowned for its high-fidelity audio solutions, and three of its standout products, the 861, 561, and 568, showcase the brand's commitment to excellence in sound reproduction and innovative technology.

The Meridian 861 is a flagship digital surround sound controller that offers unrivaled flexibility and control for multi-channel audio systems. Designed to work seamlessly with both music and cinematic audio, the 861 features advanced digital signal processing (DSP) that enables users to customize their listening experience. This model supports various connectivity options, including HDMI and digital audio inputs, ensuring compatibility with a wide range of sources. One of the key characteristics of the 861 is its ability to deliver high-resolution audio formats, making it a superior choice for audiophiles seeking pristine sound quality.

Moving on to the Meridian 561, this versatile preamplifier is designed for those who appreciate the nuances of carefully crafted audio. With its robust construction and superior circuitry, the 561 emphasizes low distortion and high clarity in audio playback. This model offers a range of inputs, including both analog and digital, allowing integration with various audio components. The 561 features Meridian's proprietary technologies that enhance the listener’s experience, such as Room Correction technology that compensates for acoustic anomalies in the listening environment, delivering optimal sound quality in any space.

The Meridian 568 processor holds its ground as a unique digital surround sound processor used in sophisticated home cinema systems. Known for its precision and clarity, the 568 is fully equipped to handle the complexities of modern audio formats, including Dolby Digital and DTS. With multiple output channels, it provides spacious sound staging, and its intelligent processing capabilities ensure that every frequency is rendered accurately. This model is particularly popular among home theater enthusiasts who demand a cinematic experience with uncompromised audio fidelity.

In summary, the Meridian 861, 561, and 568 not only represent technological prowess but also reflect Meridian Audio's dedication to providing exceptional sound experiences. Each model is engineered with unique features designed to meet diverse audio needs, ensuring that music and cinematic presentations are delivered with breathtaking realism and clarity. With these products, Meridian continues to lead the way in high-performance audio technology, setting benchmarks for quality and innovation in the industry.
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