e i d u g r e s u Meridian 556 Stereo Power Amplifier
Sales and service in the UK Meridian Audio Ltd Stonehill Stukeley Meadows Sales and service in the USA Cambs PE18 6ED Meridian America Inc England 3800 Camp Creek Parkway Building 2400 Tel (01480) 52144 Suite 112 Fax (01480) 459934 Atlanta GA 30331 Designed and manufactured in the UK by Digital Gramophone and Wireless Ltd Stonehill Stukeley Meadows Tel (404) 344 7111 Cambs Fax (404) 346 7111 PE18 6ED England Copyright © 1993–1997 Digital Gramophone and Wireless Ltd Preface Part no: 556/1 ii
Contents Introduction 1 Introduces the 556 Stereo Power Amplifier, and provides an overview of the other products available in the Meridian Setting up the stereo power amplifier 7 500 Series. Describes how to unpack, install, and use The Meridian 500 Series ........................ 2 the stereo power amplifier, and explains Sample configurations ........................... 3 what you should do if your amplifier Specification and accessories ............... 6 requires servicing. Unpacking .........
iv Preface
Introduction In choosing the 556 Stereo Power Amplifier you have acquired a component that combines major advances in audio and engineering design. The 556 Stereo Power Amplifier uses a unique feedback topology and precision local error correction system. It is designed and constructed in dual mono format, including a massive twin wound toroidal transformer, and the unit has full thermal, load, and DC protection.
The Meridian 500 Series The Meridian 500 Series is a unique system of digital, analogue, 500 Series communications and video components designed to meet the demand for absolute quality, ease of use, and lasting value. The Meridian 500 Series includes a sophisticated communications link, to ensure that any configuration of units The flexibility of the Meridian 500 Series is such that you can will work together as a fully integrated system.
Sample configurations 506 20-Bit CD Player 500 Compact Disc Transport DSP5000 A500 DSP5000 A500 506 501 500 504 556 504 562 The 506 20-Bit CD Player is an integrated CD transport and The 500 Compact Disc Transport provides a precision digital converter, providing both digital and analogue outputs.
566 20-Bit Digital to Analogue Converter 502 Analogue Controller A500 A500 500 557 Introduction 566 4 502 The digital output provided by the 500 Compact Disc Transport The 502 Analogue Controller is a full function preamplifier for use can be decoded by the 566 20-Bit Digital to Analogue Converter with any analogue source, and includes balanced inputs to allow to provide a high-quality audio output for use with a you to take advantage of balanced sources, including the 566 conventional audio
562V Multimedia Controller DSP6000 DSP6000 Satellite Video recorder 504 Television LaserDisc 500 562V The 562V Multimedia Controller is the ideal control unit for use conventional analogue sources such as the 504 Stereo FM with the Meridian DSP6000 Digital Loudspeakers. Tuner and video sound.
Specification and accessories Specification Available accessories Input 1.6V RMS. Output (stereo) Greater than 100W per channel into 8Ω. Greater than 170W per channel into 4Ω. Distortion Less than 0.1%. Noise Less than -100dB. Finish Black textured enamel and glass. Heatsinks black painted aluminium. Dimensions 88mm x 400mm x 320mm (3.45" x 15.7" x 12.6"). Weight 12kg (26 lbs). Consumption 30VA quiescent, 650VA max.
Setting up the stereo power amplifier This chapter explains how to install the stereo power amplifier. It describes what you should find when you unpack the stereo power amplifier, how you should connect it to your other audio equipment, and the siting constraints. You should not make any connections to the stereo power amplifier or to any other component in your system whilst the AC power supply is connected and switched on.
Unpacking The 556 Stereo Power Amplifier comes in a box containing the If you are not going to use the stereo power amplifier for a following components: period of several days you should switch the unit completely off, at the back panel, and disconnect it from the AC power supply. ❍ 556 Stereo Power Amplifier. ❍ 1 power cord. To position the stereo power amplifier ❍ This manual.
Connecting the stereo power amplifier Back panel Input (R) INPUT Input (L) + – + – OFF – + – + INPUT ON Outputs (-) Outputs Outputs (-) Outputs (+) Alternatively, for loudspeakers providing a single pair of inputs, either of the output terminals can be used. The output terminals should be connected to loudspeakers of 4Ω to 15Ω, using either banana plug or bare wire connections. Each channel of the 556 Stereo Power Amplifier provides twin outputs for bi-wiring.
To connect to a conventional preamplifier To connect to A500 Loudspeakers A500 Loudspeaker A500 Loudspeaker ● Connect the sockets marked INPUT on the back panel of the stereo power amplifier to the outputs from your preamplifier. You should either use a twin-screened audio cable, or a pair of single-screened audio cables.
To bi-wire to A500 Loudspeakers A500 Loudspeaker A500 Loudspeaker ● If necessary, remove the links bridging the LF and HF terminals on the back of each loudspeaker. ● Connect the LF red and black terminals from each loudspeaker to the red and black terminals on the appropriate channel of the stereo power amplifier, using twin loudspeaker cable.
Troubleshooting This section describes problems you may encounter when using The 556 Stereo Power Amplifier also includes a power circuit the stereo power amplifier, and includes suggested solutions. breaker to protect the loudspeakers. If these suggestions fail to cure the problem, please contact ❍ Check the system for the cause of the cut out. your Meridian dealer for further assistance.
Maintenance Cleaning To clean the audio connections When cleaning the stereo power amplifier bear in mind that the The audio sockets on the back of the stereo power amplifier are front of the unit is metal, and the lid is glass. gold-plated and need no cleaning if gold-plated phono plugs are used. Otherwise, it is recommended that you unplug and Disconnect the power cord before cleaning the unit. reconnect the plugs at least once a year. A proprietary contact cleaner can be used to some advantage.
Service and guarantee Service Guarantee The Meridian 500 Series of hi-fi components have been carefully The 556 Stereo Power Amplifier is guaranteed against defects in designed to give years of untroubled service. There are no user- material and workmanship for two years from the date of serviceable parts inside the case, nor do the units require any purchase. form of maintenance.
Index A Accessories 6 M B Bi-wire connection 11 Maintenance 13 P Positioning 8 S Service 14 Meridian 500 Series 2 500 Compact Disc Transport C Cleaning Sound has cut out 12 3, 4, 5 Specification 6 501 Control Unit 3 the audio connections 13 502 Analogue Controller the case 504 Stereo FM Tuner 3, 5 506 20-Bit CD Player 3 13 Components 8 Connecting to a 501 Control Unit 10 T 556 Stereo Power Amplifier 3 557 Stereo Power Amplifier 4 to a conventional preamplifier 10 562 Digi
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