e i d u g r e s u Meridian 505 Mono 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 Fax (404) 346 7111 Cambs PE18 6ED England Copyright © 1993–1996 Digital Gramophone and Wireless Ltd Preface Part no: 505/1 ii
Contents Introduction 1 Introduces the 505 Mono Power Amplifier, and provides an overview of the other products available in the Meridian 500 Setting up the mono power amplifier 7 Series. Describes how to unpack, install, and use The Meridian 500 Series ........................ 2 the mono power amplifier, and explains Sample configurations ........................... 3 what you should do if your mono power Specification and accessories ............... 6 amplifier requires servicing. Unpacking ....
iv Preface
Introduction In choosing the 505 Mono Power Amplifier you have acquired a component that combines major advances in audio and engineering design. The 505 Mono Power Amplifier uses a unique feedback topology and precision local error correction system. It includes a massive single wound toroidal transformer, and the unit has full thermal, load, and DC protection. This guide is designed to enable you to obtain the best possible results from the unit in conjunction with the other units in your system.
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 508 Compact Disc Player 500 Compact Disc Transport DSP5000 A500 DSP5000 A500 508 505 500 502 505 504 562 The 500 Compact Disc Transport provides a precision digital converter, providing both digital and analogue outputs. output, and can drive DSP5000 Digital Loudspeakers directly.
566 20-bit Digital to Analogue Converter 502 Analogue Controller A500 500 Introduction 566 4 A500 505 502 505 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 a
562V Multimedia Controller DSP6000 DSP6000 Satellite Video recorder 504 Television LaserDisc 500 562V conventional analogue sources such as the 504 FM Tuner and with the Meridian DSP6000 Digital Loudspeakers. video sound.
Specification and accessories Specification Input Available accessories 1.27V RMS (phono). The following accessories are available from your dealer: 2.5V RMS (balanced). Output (stereo) Greater than 160W per channel into 8Ω. Greater than 270W per channel into 4Ω. Distortion Less than 0.05%. Noise Less than -90dB. Finish Black textured enamel and glass. Heatsinks black painted aluminium. Dimensions 88mm x 400mm x 320mm Introduction (3.45" x 15.7" x 12.6"). 6 Weight 11kg.
Setting up the mono power amplifier This chapter explains how to install the mono power amplifier. It describes what you should find when you unpack the mono power amplifier, how you should connect it to your other audio equipment, and the siting constraints. You should not make any connections to the mono power amplifier or to any other component in your system whilst the AC power supply is connected and switched on.
Unpacking The 505 Mono Power Amplifier comes in a box containing the Once set up, the mono power amplifier can be left switched on following components: as it consumes negligible power when not in use. ❍ 505 Mono Power Amplifier. If you are not going to use the mono power amplifier for a period ❍ 1 power cord. of several days you should switch the unit completely off, at the ❍ 1 phono shorting plug. back panel, and disconnect it from the AC power supply. ❍ This manual.
Connecting the mono power amplifier Back panel BALANCED INPUT (use shorting plug) + - + - OFF ON Outputs (-) Balanced input Outputs Phono input Each 505 Mono Power Amplifier provides twin outputs for biwiring.
Inputs To connect to a conventional preamplifier The following two alternative audio inputs are provided: ● Connect the socket marked INPUT on the back panel of the Use this input To connect to this INPUT A preamplifier, using a phono connector and high-quality screened Setting up the mono power amplifier cable. 10 BALANCED INPUT power amplifier to the appropriate output from your preamplifier. You should either use a screened audio cable, or half of a twinscreened audio cable.
To connect to a 501 Control Unit 505 Mono Power Amplifier To connect to A500 Loudspeakers A500 Loudspeaker A500 Loudspeaker INPUT 505 Mono Power Amplifier 501 Control Unit 505 Mono Power Amplifier OUTPUT INPUT 505 Mono Power Amplifier ● Connect the sockets marked OUTPUT L and R on the back panel of the 501 Control Unit to the INPUT socket on the back panel of each of the 505 Mono Power Amplifiers. ● Use the links provided to bridge the HF and LF terminals on the back of each loudspeaker.
To bi-wire to A500 Loudspeakers A500 Loudspeaker A500 Loudspeaker 505 Mono Power Amplifier Setting up the mono power amplifier 505 Mono Power Amplifier 12 ● 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 power amplifier, using twin loudspeaker cable.
Troubleshooting This section describes problems you may encounter when using The sound has cut out the mono power amplifier, and includes suggested solutions. The 505 Mono Power Amplifier includes a thermal shutdown, If these suggestions fail to cure the problem, please contact which mutes the output if the amplifier becomes too hot. your Meridian dealer for further assistance.
Maintenance Cleaning To change the mains fuse Fuse Spare When cleaning the mono power amplifier bear in mind that the front of the unit is metal, and the lid is glass. Disconnect the power cord before cleaning the unit. Note: Do not use abrasive cleaners on any part of the mono Setting up the mono power amplifier power amplifier. 14 To clean the case ● Use a slightly damp cloth. ● Remove the mains connector, and pull out the drawer next to the power input to access the fuses.
Service and guarantee Service Guarantee The Meridian 500 Series of hi-fi components have been carefully The 505 Mono 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.
16 Setting up the mono power amplifier
Index A Accessories 6 B Balanced input M Maintenance P 14 Meridian 500 Series 2 10 502 Analogue Controller Cleaning phono shorting plugs 10, 13 3, 4 508 Compact Disc Player 3 Specification 562 Digital Control Unit 562V Multimedia Controller Components 8 Converter to a 501 Control Unit 11 5 to a conventional preamplifier 10 13 13 2 Meridian DSP5000 Digital Loudspeakers 3 F Fuse, replacing 14 Meridian DSP6000 Digital G Guarantee Meridian System Handset 2 H Heat generated durin
