Meridian Audio M60C Speaker User Manual
Contents
1. Vertical operation Although primarily intended for horizontal mounting the M60C can also be used in the vertical orientation The best sound would result from a position which is 90 degrees clockwise from the normal orientation As a Centre Channel The M60C is ideally suited as a centre channel speaker for surround sound installations The location you choose will depend on whether you intend the surround system for music only or whether it is to be used in conjunction with a TV monitor or video projector If the application is music only place the speaker centrally between the main left right pair and arrange for the tweeters of the three speakers to be approximately the same height If the application is video associated then the constraints of the video system will largely dictate the position If at all possible note the following guidelines e Height of left centre right to be as even as possible e Above a TV is vastly better than below e Directly on a TV is OK the M60C is magnetically shielded e Below a TV will work if adequate cooling is available e n a custom cabinet it is entirely the responsibility of you and your dealer to ensure adequate ventilation If in doubt this can determined by operating the unit and monitoring the temperature of the backplate which is also the heatsink e Permanent wiring to a building is prohibited by most building codes 1 Preferably within 1 foot 30cm M60C2. MERIDIAN M60C USER GUIDE Meridian Audio Ltd 14 Clifton Road Huntingdon Cambridgeshire PE18 7EJ England Tel 0 1480 52144 Fax 0 1480 459934 Meridian America Inc 3800 Camp Creek Parkway Building 2400 Suite 112 Atlanta GA 30331 USA Tel 404 344 7111 Fax 404 346 7111 Author Duncan M Smith Boothroyd Stuart Meridia MERIDIAN and Meridian Digital Theatre are registered trademarks of Meridian Audio Ltd Meridian Audio Ltd 1995 Introduction In choosing a Meridian M60C Centre Channel Loudspeaker you have acquired refined equipment which will bring you listening pleasure for many years to come Whether as part of an enhanced stereo system or a full home theatre the centre channel is designed to bring you the highest quality sound possible This manual should help you get the best from it If you have any queries regarding the M60C remember that your Meridian Dealer has been selected for his expertise You should refer to him in the first instance General Description Unpacking The M60C is part of the current range of Meridian Active Loudspeakers They use built in power amplifiers specifically tailored for the cabinet and drive units to give a perfectly matched system This superior approach to the design of high fidelity loudspeaker systems has been a speciality of Meridian for fifteen years Your M60C has two inputs unbalanced and balanced an electronic crossover and three power amplifiers on
3. User Guide Operation As a Left Right or a Surround pair The locations chosen for a pair of M60Cs are crucial to getting the best possible acoustic result For two channel stereo the two speakers should ideally be equidistant from the main listening position and the same distance apart Since it has a horizontal format the M60C can be mounted ona strong shelf or on a suitable stand about which your dealer can advise General guidelines In order to get the best acoustic performance from your M60C in your room you should try to achieve the following e If possible have the most acoustically absorbent wall in the room behind the front speakers They could for example be in front of an open bookcase or curtained window or on each side of a bow window e If possible have each M60C at least 50cm from a corner e f possible locate the listening position so that your head is at least 60cm from the wall behind you unless this is acoustically absorbent Consider the following practical points e If possible you should locate the M60C so that the electronics back of the speaker are not subjected to long term strong sunshine The back plates should be cool less than hand hot when the unit is not in use e You should not if possible locate a M60C with its back to any heat source for example a central heating radiator e You should not locate a M60C with its back fully enclosed so that it cannot dissipate h
4. e for each of the drive units The drive units are 2 x 160mm shielded polypropylene bass and bass midrange 1x 25mm aluminium custom dome shielded tweeter The Boothroyd Stuart Meridian tweeter has a number of features e silver voice coil e semi horn loading for improved sensitivity and dispersion characteristics e ferro fluid damping e correctly aligned rear enclosure Inside the packaging you should have found e 1 M60C Active Loudspeaker complete with grilles e 4 self adhesive rubber feet to protect furniture e this manual e 1 power cord suitable for your territory e 1 phono phono analogue audio lead M60C User Guide If any of these items is missing please contact your dealer We suggest that you retain the packaging carefully as it provides maximum protection in transit WARNING Take great care when unpacking or repacking the M60C that you do not put undue pressure on the front as the drive units may be damaged if pressed Getting Going IMPORTANT Before connecting to the AC supply check that the unit has been manufactured to the correct supply voltage for your territory Do not make any alterations to the connections of your system with the M60C AC power switched on To get going e Use the audio cable supplied to connect the unbalanced input of the speaker to an appropriate preamplifier or surround sound decoder e Switch on the power at the source at a low volume level e Connect the M60C to AC power
5. eat from the rear panel heatsink Final adjustments The best sound possible will only be obtained if the M60C is firmly mounted and cannot rock Normally the M60C should be left switched on even when the unit is not in use The sound quality of the unit is at its best when the temperature of the components has reached normal working levels This takes about an hour The electronics in the M60C use the very latest techniques to ensure that the idle power consumption of the unit is very low This ensures long periods of cool running and low energy consumption All audio equipment should be switched off if you expect to be away from the installation for an extended period M60C User Guide Maintenance Help Cleaning There are no user serviceable parts inside the M60C One or two days after installation check the tightness of the fixing screws of the loudspeaker drivers These screws may loosen slightly in shipping or with extremes of temperature or humidity and the speaker will not sound at its best with them loose Do not over tighten them It is worth checking these screws after transit or extended periods of loud playing The electronics do not need routine maintenance The audio sockets are gold plated and where gold plated phono sockets are used there should be no need to clean the contacts Other phono plugs should be unplugged and replugged once a year Some proprietary contact cleaners may be used to advantage b
6. erefore advised to insure the unit In the USA and Canada contact Meridian America Inc 3800 Camp Creek Parkway Building 2400 Suite 112 Atlanta GA 30331 Tel 404 344 7111 Fax 404 346 7111 The Meridian M60C is guaranteed against defects in material and workmanship for 12 months from the date of purchase The guarantee is void if the M60C has been subjected to misuse accident or negligence or has been in any way tampered with or modified without the written authorisation of DGW Ltd Attempted servicing by unauthorised people may invalidate the guarantee Labour and carriage charges are not covered unless by local agreement If you request service under guarantee proof of the date of purchase will be required Outside the UK local warranty liability is restricted to equipment purchased within the territory Our agents abroad are contractually obliged to service under guarantee only equipment sold through them They are entitled to make a non refundable charge for any service carried out on other equipment This guarantee does not limit your statutory rights within the United Kingdom M60C User Guide Specification Audio Inputs Unbalanced 775mV nominal gold plated phono 3Vrms max XLR Power Complementary bipolar design with Amplifiers output stage error correction and twin loop design Mid Bass 65W mean power 65W mean power Distortion lt 0 05 typically less than 0 01 up to full power at all freq
7. uencies Noise and hum lt 94dBr Output Typically gt 108dB spl 1m lt 15dB spl 1m Frequency In room response within 3dB 45Hz response 20kHz Crossover Double Butterworth at 2 6kHz First Order at 400Hz Drive units 2 x 160mm polypropylene high efficiency long throw shielded custom drivers Tweeter Meridian 25mm piston in short horn aluminium dome with silver voice coil Cabinet Constructed from fine veneered MDF Dimensions 195x670x280mm Weight 20 kg each Power 100 125 200 230 210 250V AC 50 60Hz 10VA idle 200VA max M60C User Guide
8. ut you should seek the advice of your dealer No Sound e Check the AC power supply to the M60C The green light on the front should be lit e Check the AC supply to the other units in the system e Check correct source is selected and that the source itself is producing music e Check interconnections are made to the correct sockets Unit goes silent when played hard M60C has a temperature sensing system on board which prevents overheating of the electronics The sound will continue when the speaker has cooled The cabinet of the M60C is finished with veneer and may be wiped clean with a damp cloth The display panel is glass and should be cleaned using a barely damp chamois leather Do not use abrasive cleaners on any part of the M60C M60C User Guide Service Guarantee The Meridian M60C has been carefully designed to give years of untroubled service In the unlikely event that your M60C fails to function correctly it should be returned in its original packing to your Meridian dealer In case of difficulty please write to the following address if you live in the UK Digital Gramophone amp Wireless Ltd 14 Clifton Road Huntingdon Cambridgeshire PE18 7EJ Outside the UK contact the importing agent for the territory A list of Meridian agents abroad is available from the above address No responsibility can be accepted for the M60C while it is in transit to the factory or an agent and customers are th
9. with the cord provided e Switch on the M60C with the switch located next to the AC power inlet A green light should appear at the front of the unit and you should be able to play music If you cannot hear any sound refer to Help Installing your M60C This section explains how to get the best from your M60C installation If your system includes a Meridian 565 Digital Surround Processor you will find more information on correct installation in its User Guide Connections AC power connects to the M60 at the left hand end of the speaker viewed from the front Where possible connect the M60C to a grounded socket using the mains lead provided Try to use a separate AC power outlet for each active speaker The use of adapter units is discouraged as they degrade the sound quality Unbalanced audio may be connected to the single phono socket This can be connected to any preamplifier or surround sound decoder such as the Meridian 565 Digital Surround Processor In this case connect to the Analogue Centre output M60C User Guide Balanced audio may be connected instead using the Balanced Input XLR socket If your preamp or surround decoder has a balanced output it may be connected as follows Connections to XLR 1 Shield and ground or common 2 Signal phase positive 3 3 Signal phase negative Siting We recommend that you now set up the system so that you can listen to music and adjust the position of the M60Cs if necessary
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