User manual MERIDIAN AUDIO 568

[. . . ] Meridian 568 Digital Surround Processor u s e r g u id e Meridian 568 Digital Surround Processor User Guide Preface i Sales and service in the UK Meridian Audio Ltd Stonehill Stukeley Meadows Cambs PE18 6ED England Tel (01480) 52144 Fax (01480) 459934 World Wide Web http://www. meridian-audio. com Part no: 568 Copyright © 1995­1999 Digital Gramophone and Wireless 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. [. . . ] For loudspeaker layouts using Meridian DSP loudspeakers as the main left and right, or centre speakers, the Limit value is fixed at -11dBFS and the parameter does not appear in the menu. 48 DSP presets 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. 49 Unpacking The digital surround processor comes in a box containing the following components: FCC Warning: This equipment generates and can radiate radio r Meridian 568 Digital Surround Processor. r 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. It has been type-tested and complies with the limits set out in Subpart J, Part 15 of FCC rules for a Class B computing device. These limits are intended to provide reasonable protection against such interference in home installations. r This manual. If any of these items are missing please contact your dealer. We suggest that you retain the packing in case you need to transport the unit. EEC: This product has been designed and type-tested to comply with the limits set out in EN55013 and EN55020. 50 Positioning the digital surround processor Safety warnings r Do not expose the unit to dripping or splashing. r Do not place any object filled with liquid, such as a vase, on the unit. r Do not place naked flame sources, such as lighted candles, on the unit. r Near strong magnetic radiation, such as near a power amplifier. r Near to a television, or where connecting cables may be subject to or cause interference. Setting up the digital surround processor To avoid interference Do not position the digital surround processor: To avoid overheating Do not position the digital surround processor: r In direct sunlight. r Near heat sources, such as a radiator. r Directly on top of heat producing equipment, such as a power amplifier. Ensure that air can flow through the cooling slots on the base and top cover. Alternatively, an optional Fan kit can be fitted to ensure adequate ventilation when the 568 is installed in an enclosed space. 51 Connecting the digital surround processor Rear panel Expansion connector OFF Power input and fuse Analogue speakers REAR-L SIDE-L/SUB Balanced analogue outputs CENTRE Analogue speakers MAIN-L RADIO Analogue inputs TV 7 EXPANSION 5 3 1 L 8 ON 6 RIGHT CENTRE BALANCED OUTPUT LEFT 4 SUB 2 MAIN-R R A2 A1 ANALOGUE INPUT REAR-R SIDE-R/SUB CDR/D3 CD/D1 Setting up the digital surround processor 7­8 5­6 3­4 1­2 OUT IN LD/O1 RS232 MERIDIAN COMMS TAPE2/D4 DVD/D2 DIGITAL INPUT BYPASS REARS SIDES/SUB CENTRE/SUB DIGITAL OUTPUT MAIN COMPOSITE VIDEO S PC Comms Optical input Digital Digital inputs output Digital speakers Video connections Video connections To take advantage of the on-screen display you should loop either composite or S-video through the 568; do not connect both inputs. Both video loop inputs include DC rejection. Use this connection COMPOSITE/S IN To connect to this The video output from the 581 Video Controller, or a video recorder, TV tuner, or cable television. COMPOSITE/S OUT The video input of a television or monitor. 52 Digital audio inputs The following table gives details of the digital audio inputs: Use this input CD/D1, DVD/D2, CDR/D3, TAPE2/D4 To connect to this A digital source, such as a CD player, DVD player, digital tape recorder, or digital television tuner. LD/01 A digital-optical source, such as a LaserDisc player, the 519 Demodulator, or a CD player with no digital-cable output. The digital connections should be made with high-quality 75 screened cable. Suitable cables are available from Meridian. We do not recommend using audio cables, which do not have adequate shielding or the correct impedance, or cables intended for UHF applications, as these do not provide adequate shielding in the 1­30MHz region. Optical connections should be made using a suitable optical fibre supplied by your dealer. Analogue audio inputs The following table gives details of the analogue audio inputs: Use this input TV/A1, RADIO/A2 To connect to this An analogue source such as a radio tuner, tape recorder, TV tuner, or cable television. [. . . ] 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. 115 DVD Digital Video Disc or Digital Versatile Disc, a CD-sized disc with nearly 30 times the storage capacity of CD. It is capable of storing digital video, high-quality multichannel audio, or computer data. LFE sub A subwoofer which plays the full 120Hz bandwidth LFE signal in Dolby Digital, DTS, and MPEG presets. MHR Meridian High Resolution is a proprietary secure encoding format using encryption and anti-copy methods that allows secure transfer of audio streams between elements of a Meridian-only system for the purpose of playback only. It provides a secure copyright protection environment and has the very important benefit of lowering jitter and improving sound quality on all material. Limit A DSP parameter that sets the peak-level limit of the bass signal added to the main loudspeakers. Layout Refers to a particular arrangement of speakers and subwoofers. You can select different layouts for the cinema, music, and 5. 1 DSP presets. Max SPL MLP A DSP parameter that sets the peak-level limit for the LFE channel. [. . . ]