Edwards Audio MC3 Phono Stage user manual
Contents
1. own safety LOADING The MC3 is equipped with adjustable input loading and gain This is achieved via internal jumpers which are accessed by removing the 4 screws on the rear panel marked in red on diagram 1 and sliding the PCB out backwards see diagram 1 The PCB is clearly labelled but for greater clarity can be used in conjunction with diagram 2 There are two separate banks one for each channel so the jumpers should mirror each other The default values that are set at the factory are 100R with 2 2nF which is suitable for the vast majority of cartridges The best course of action is to use the cartridge manufacturers recommended loading for both resistance and capacitance however feel free to experiment as different combinations will often require adjustment The most common values are catered for if you really need any non standard values then please ask your retailer to contact the factory and we can supply an exchange PCB with the desired values on there is usually a small charge for this to cover carriage In some cases there will be no recommended capacitive loading but it is usually required to prevent RF Problems more than any sound quality reasons if in doubt use the default 2 2nF position unlike most phono stages there is a small series damping resistor to prevent the creation of a tuned tank circuit Whilst you are free to trial any combination be warned that some combinations will cause sever in band response changes as we2. V1 0 TALK Electronics Edwards Audio Series MC3 User Manual TALK TALK Electronics 3 Eliot Close www talkelectronics com IMPORTANT SAFETY INSTRUCTIONS CAUTION TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE THE POWER SUPPLY UNIT COVER THERE ARE NO USER SERVICEABLE PARTS INSIDE REFER ALL SERVICING TO QUALIFIED PERSONNEL Please read this manual carefully and keep it in a sate place for future reference This appliance MUST be Earthed please ensure that it is plugged into a suitable AC socket with the safety earth connected Any slots in the top covers or on the underside that may be present are provided for necessary ventilation To ensure reliable operation of this apparatus and protect from overheating these slots must never be blocked or covered by items such as newspapers table cloths or curtains A clearance of 100mm is required at all times on all top side surfaces No naked flame sources such as lighted candles should be placed on this apparatus failure to observe this could cause a risk of fire Do not place a liquid containing vessel such as a vase on this apparatus as this can result in a risk of fire or electric shock Do not expose this apparatus to rain or place it where it may come into contact with splashing or dripping water If this apparatus accidentally gets wet unplug it and contact an authorised service agent or dealer immediately You can clean this apparatus with a damp lint free cl
3. and also the requirements of the EC low voltage directive relating to electrical safety by application of the following standard BSEN IEC60065 2002 International Safety standard For the purposes of testing the MC3 was used with the high quality interconnects supplied by TALK Cables Compliance with the above standards may only be made if the unit is installed as per this manual and using the correct cables
4. free of charge during the first ten years after purchase provided that it was originally purchased from an authorised Talk Edwards Audio dealer or distributor nd registered via our website www talkelectronics com The manufacturer can take no responsibility for defects arising from accident misuse abuse wear and tear neglect or through unauthorised adjustment and or repair neither can they accept responsibility for damage or loss occurring during transit to or from the person claiming under the guarantee THE WARRANTY COVERS parts and labour costs for ten years from the purchase date After ten years you must pay for both parts and labour costs The warranty does NOT cover transportation costs at anytime CLAIMS UNDER GUARANTEE This equipment should be packed in the original packing and returned to the dealer from whom it was purchased or failing this directly to the Talk Edwards Audio distributor in the country of residence It should be sent carriage prepaid by a reputable carrier NOT by post No responsibility can be accepted for the unit whilst in transit to the dealer or distributor and customers are therefore advised to insure the unit against loss or damage whilst in transit The Edwards Audio series MC3 has been manufactured to conform with the protection requirements of the EC Council directive 89 336 EEC relating to EMC by application of the following standards EN50081 1 1997 Emissions Standard EN50082 1 1997 Immunity Standard
5. ge you can maximise the performance The main MC3 should be placed on a separate shelf next to or near your Turntable There are 2 inputs available one is marked MM and the other is marked MC Connect your turntables arm leads to the required input observing Red for RIGHT and White Black for LEFT If you have an additional Earth or Ground cable attach this to the GND terminal provided above the input sockets Next connect an additional pair of high quality RCA Phono cables not supplied between the output sockets and any available LINE input on your amplifier this is usually marked AUX Do NOT connect it to any input that may be marked Phono For optimum performance we recommend a TALK Reference series cable these can be purchased from your supplier Next connect the Edwards Audio series MC3 to the Edwards Audio series PSU 3 that will have been supplied at the same time using the power mini DIN cable provided there is more than one suitable outlet it does not matter which is used The power mini DIN cable provided is equipped with locking connectors which will only release as you pull on the outer part of the plug out Pulling on the cable will only result in damage Please observe the polarity the flat face should be uppermost and do not force the plug into the socket it is designed to be a tight fit and is robust but undue force can result in damage Next the Power supply should be connected in to any available AC outlet near to y
6. hase shifts induced The action of this filter is aimed at the more common arm cartridge resonant frequencies and is there to make your amplifiers life a little easier A great deal of valuable output power from your amplifier can be consumed trying to reproduce these frequencies As a rule of thumb if your amplifier is 100 Watts or less and or your room is smaller than 300 sq feet leave it in the ON position If you have a bigger amplifier or bigger room then feel free to play with it but bear in mind that if your amplifier gets hot it means that it is working very hard and it will probably sound better with the filter ON FRONT PANEL DISPLAY You can change the brightness of the front panel LED indicators This can be accessed by removing the 4 screws on the rear panel marked in red on diagram 1 and sliding the PCB out backwards see diagram 1 On the front panel you will see a small POT on the front panel PCB see diagram 3 adjusting this will vary the brightness of the display In it s minimum position the display will be off WARNING On the PSU3 this is complicated by the fact that you need to release the transformer fixing so this is best left to a qualified engineer as there are dangerous mains voltages present LISTENING Having successfully connected and installed the MC3 into your system for best results we suggest that any noise is reduced to minimum To do this select the Aux input on your amplifier or whatever input you used
7. liot Close Camberley Surrey GU15 1LW UK Telephone 08456 123388 or 07736 421928 fax 01276 613250 email info talkelectronivs com website _ www talkelectronics com Edwards Audio MC3 RIAA Phono stage MM MC R MMINPUT L R OUTPUT L A id a 47K 1 20pF 470pF 7 28kHz 7 56 470pF 10nF 7 338kHz 7 16 Only use 120pF 470pF only for MM with low inductance Suggest 1nF is used HOMC cartridge type Suggest InF is used Suggest 2 2nF is used Standard setting Watch out for RF pick up from the arm cable Table of settings 1nF 10nF 7 338kHz 7 33 1nF 1OnF 7 720kHz 7 72 ew 2n2F 10nF 7 720kHz 7 72 A7R 2n2F 10nF 7 1 5MHz User manual MC3 PSU3 Table of Contents 1 Safetv Instructions 2 Un packing list 3 Connections 4 Adjustments 5 Operation 6 Guarantee Thank you for purchasing an Edwards Audio series phono stage with care over the correct installation we are sure that it will give many years of pleasure UNPACKING LIST Inside the box you will find the following items supplied as standard 1 EA MC3 head unit 2 EA PSU3 dedicated Power Supply Unit PSU 3 Dedicated DC chord 1M 4 AC Power chord 2M 5 User manual NOT Supplied Connecting lead from the turntable Connecting lead to your Pre amplifier Integrated amplifier CONNECTIONS Before connecting the MC3 into your system you may need to read the section on ADJUSTMENTS so that if using an MC type cartrid
8. ll as gain changes to help avoid major problems there is a table at the end of this manual which you can use as a guide as to the likely results using the various positions If after listening to various combinations you are unsure it is best to revert to the factory standard settings or 100R and 2 2nF Bear in mind that if you change the resistance it will change the output louder is not always better GAIN There are 6 different levels available in essence the idea is to best match the level when compared with that of another input like a CD player So simply play a CD and switch between that and the input you have used for your MC3 usually AUX and move the jumpers to a position that roughly equalises the levels If in doubt opt for a slightly quieter value high gain positions will reduce the input overload of the MC3 as there is a direct relationship between the two and excess gain may overload the input of your pre amplifier especially if it is a valve based one which usually have very high sensitivity WARP FILTER There is an internally selectable warp filter which operates at around 7Hz when shipped this is set to the ON position We suggest that you leave it in this position for best results however you can remove this to achieve a flat response by moving the jumpers identified on diagram 2 Do not confuse this with the normal 20Hz RIAA roll off filter which is NOT implemented as we believe that this is not desirable due to p
9. oth when necessary but be sure to isolate and unplug the apparatus first To cut off the power source totally unplug the apparatus from the wall outlet Do not overload wall outlets extension cords or adaptors beyond their capacity since this can result in fire or electric shock Use only the supplied AC power chords for the country of use should they need replacement please use a cable with the correct certifications for the country of use See also our section on Connections for more information Be sure to hold the plug not the cord when disconnecting this apparatus from an electric socket Power supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them paying particular attention to cords at the plug end adaptors and the point they exit from the appliance Before connecting the AC power cord to the Power supply unit make sure the voltage of the Power supply unit as marked on the label at the rear corresponds to the local electricity supply Never insert anything metallic into the open parts of this apparatus Locate this apparatus near an easily accessible AC outlet If this apparatus does not operate normally in particular if there are any unusual sounds or smells unplug it immediately and consult an authorised dealer service agent or re seller Unplug this apparatus from the AC outlet before attempting any service work Only a qualified technician should
10. our system We recommend that you use the power chord supplied and that you do NOT use a pre filtered supply as we have designed a high performance filter into the PSU already A fully screened after market power chord like the TALK Reference power cord without any filtering added may bring about an improvement in performance in certain environments but ALWAYS try before you buy In many cases it will actually get worse so listen in your system context There are no hard and fast rules about this what works in one system may well not work in another To power ON switch on the AC power supply at the wall there is no power switch on the power supply or phono stage itself The front panels on both the PSU3 and the MC3 should illuminate REAR PANEL ADJUSTMENTS INPUT SWITCHING This is straight forward simply press the small black button found between the input sockets to select the desired input unused inputs should be shorted for maximum performance The front panel will illuminate according to the selected input MONO MODE There is an optional MONO mode which will sum the outputs so as to produce a real mono experience when playing mono recordings This is activated by switching the rear panel Mono switch located near the output sockets the front panel display will change colour to RED to indicate that you have activated this mode INTERNAL ADJUSTMENTS All adjustments MUST be performed with the MC3 unplugged for your
11. remove the Power supply unit cover ONLY connect the supplied Edwards Audio series PSU 3 to the MC3 DC socket labelled on the rear of the Phono Stage LOAD R ES za ss j E RESF ws TY Grax Gala arma or cer KO 330 3046 sE nae GAIN 2108 TALK ELECTRONICS DO Edwards Audio n MCI VIA 5 raro tthalgceranigecnm 7 77 www talbaleetronige com i ween eee ME VIS e mm mo Diagram 2 Specifications MOI Essen 10mV ominal MPU a E cise aie caste cape is E di dia 0 1 1mV Max Gain MC input MM cccceeecseeeeseeenceeenneeesneeesteeesereecceeesereesneeeseeeennteennaeestateenates 73dB 40dB TAD DistortioM ija dees sheaeedaeondenesisnsediua vides inn ne kt an Ka ba e sds lt 0 006 1kHz lt 0 02 20kHz Signal io noise 80dB A Weighted RIAA o A within 0 25dB Frequency response 20 100kHz within 0 3dB Stereo separation better than nput Loading MC MM ccccsecceeeeeeseeeeenseeeseeeeeeeecseeeeeestseeseeniaes 100R with 2n2 47K with 120pF 801 jojiiifjonje z o a lt 10 Ohms OMINGl OUTOUts cian N lp a dra 100mV 1V NS 9 8v depending upon input Dimensions WxHxL 114 5mm x 47 5mm x 160mm Wea Mi EA TIT TEMA 3 5kg Power consumption Max acacia petendi Ki Knit rezi e 3 5W depends upon loading E amp OE in accordance with our policy of ongoing research and development we reserve the right to change the specification at any time Edwards Audio is part of TALK Electronics 3 E
12. to plug the MC3 into and advancing the volume control slowly hopefully no hum but a small amout of hiss will be heard Assuming all is well enjoy many late evenings listening to your system as the sound will not easily let you go to bedil If for some reason you do hear some hum try the following experiment with the physical position of the MC3 and or the ground connection There is also an earth lift switch on the PSU which may help It may well be that the quietest position is not on a shelf at all There are no hard and fast rules as to where to best position the MC3 basically the quieter it is the better it will sound all you should hear is a feint hiss if this is on the floor behind your equipment rack the so be it Don t be worried about where it is it s position and orientation will have no detrimental effect on the MC3 s function or reliability MM or HOMC operation If you are using an MM type of cartridge you can use input 2 this has a standard 47K and 120pF loading which is correct for the vast majority of cartridges If you are using a high output moving coil type HOMC then it is best to use the MC input and set the loading and gain to the required positions we suggest the minimum gain setting be used WORLDWIDE GUARANTEE There are no user serviceable parts inside so please do not be tempted to play or modify any part of the MC3 this will invalidate your guarantee Your guarantee entitles you to have the unit repaired
Download Pdf Manuals
Related Search