User manual MERIDIAN AUDIO 568 2

[. . . ] Meridian 568. 2 Digital Surround Processor u s e r g u id e Meridian 568. 2 Digital Surround Processor User Guide Preface i Sales and service in the UK Meridian Audio Ltd Stonehill Stukeley Meadows Cambs PE29 6EX England Tel (01480) 445678 Fax (01480) 445686 World Wide Web http://www. meridian-audio. com Part no: 568. 2/1 Copyright © 2002 Meridian Audio Ltd. Manufactured under license from Dolby Laboratories Licensing Corporation (Canadian patent 1, 037, 877), Lucasfilm Ltd. (US patents 5, 043, 970; 5, 189, 703; 5, 222, 059), Trifield Productions Ltd, and Nimbus Records Ltd. Dolby, Pro Logic, AC-3, and the double-D symbol are trademarks of Dolby Laboratories Licensing Corporation. [. . . ] Auto automatically detects bitstreams marked as EX encoded *. EZ * Auto is only available for Dolby Digital sources. DSP presets * Some EX-encoded discs may not be marked as EX encoded, in which case select On rather than Auto. 50 Multi-channel presets With the optional multi-channel input card the 568. 2 Digital Surround Processor can process sources consisting of up to six discrete multi-channel digital inputs. The Discrete preset uses the subwoofer configuration specified for Music presets. Cinema Each source can be configured to use either the multi-channel input, or a two-channel input such as D5, D6, or D7. If a source, such as DVD, is configured to use the multi-channel input, you can specify a separate two-channel preset and sixchannel preset to be selected automatically, depending on the audio format of the source. In addition, for one enhanced multi-channel source you can specify four alternative presets: Music 2, Music 6, Movie 2, and Movie 6, which will be selected according to the audio content. The Music or 5. 1 Movie subwoofer configuration will also be selected automatically, as appropriate. For more information see MHR Smart Link, page 2. The Cinema preset uses the subwoofer configuration specified for 5. 1 Movie presets. DSP presets The Cinema preset is a user preset which is provided when you reset the 568. 2 to a standard Type; see Choosing a standard setting, page 68. It is based on the built-in Discrete preset, but with settings more appropriate for movie soundtracks. When using the Meridian Smart Link it is automatically selected for the enhanced source for Movie 6 materials. The Cinema preset can be modified, or even deleted if you prefer to use Discrete for all the multi-channel materials; see Defining your own presets, page 34. Discrete The Discrete preset is designed for music, and treats the inputs very much like 5. 1 channel compressed sources; for example the same dynamic bass limiting is used to protect the speakers. 51 Discrete preset parameters Parameter HS Out?* Options Y or N What it changes Select Y for high-rate audio, upsampled if necessary. Select N for standard-rate audio, downsampled if necessary. Off, On Adds a 10dB cut to the LFE input. 2+2+2 Off, 5. 1, Side, 7. 1 Determines how channels 3+4 are used. LFE -18dB to +10dB Limit DSP presets Ambisonics The Ambisonics preset allows you to decode multi-channel sources which have been encoded in Ambisonics B format. Ambisonics B format contains four independent channels of information to give a three-axis representation of the sound at the recording position. The signals are: mono sound pressure, left-right velocity component, front-back velocity component, and up-down velocity component. The Ambisonics preset uses the subwoofer configuration specified for Music presets. The relative level of the LFE bass channel. The peak-level limit of the total bass signal added to the main speakers. -15 to -5dBFS * Only available with compatible hardware; contact your Meridian dealer. 52 Setting up the digital surround processor This chapter explains how to install the digital surround processor. It describes what you should find when you unpack the unit, how you should Setting up the digital surround processor connect it to your other audio equipment and speakers, and the siting constraints. Before you begin installation you should ensure that your digital surround processor is the correct voltage for your local AC supply. If it is not, do not try to install the unit, and contact your dealer. You should not make any connections to the digital surround processor, or to any other component in your system, while the AC power supply is connected and switched on. 53 Unpacking The digital surround processor comes in a box containing the following components: FCC Warning: This equipment generates and can radiate radio Meridian 568. 2 Digital Surround Processor. RS232 computer serial lead. Setting up the digital surround processor Radio interference frequency energy and if not installed and used correctly in accordance with our instructions may cause interference to radio communications or radio and television reception. [. . . ] Like Dolby Digital it provides five full-frequency range channels (left, centre, right, left surround, and right surround) and an additional Low Frequency Effects (LFE) channel. Glossary Aspect ratio The overall shape of the speaker layout. Compress A DSP parameter providing dynamic range control for Dolby Digital sources. 117 DVD Digital Video Disc or Digital Versatile Disc, a versatile CD-sized disc with nearly 30 times the storage capacity of CD. It is capable of storing digital video, highquality multi-channel audio, or computer data. DVD-Video A DVD containing video tracks together with one or more soundtracks, menus, and other entertainment features. LFE sub A subwoofer which plays the full 120Hz bandwidth LFE signal in Dolby Digital, DTS, and MPEG presets. Layout Refers to a particular arrangement of Limit A DSP parameter that sets the peak-level limit of the bass signal added to the main loudspeakers. DVD-Audio A DVD disc containing audio tracks in one or more of a number of alternative formats to provide higher quality or higher capacity than CD, multi-channel audio, together with the option of still images or video. A DVD-Audio disc may also include lower quality versions of the material in DVDVideo format for compatibility with players that do not support DVD-Audio. Glossary speakers and subwoofers. You can select different layouts for the cinema, music, and 5. 1 DSP presets. Max SPL LFE A DSP parameter that sets the peak-level The Low Frequency Effects (LFE) channel which enhances movie soundtracks with sound effects and ambient sounds. [. . . ]