Description
Brand New Old Stock so you can be assured of a long life Exactly the same spec and eliptical diamond type as the MMC20E but badged as a 10E and issued in the US only Completely black stylus surround so a better match for black tone arms. eg./ Beogram 4001 or Beocenter 5000 completing the aestheticsInspected, tested and confirmed as new condition - see images MMC means Moving Micro-Cross, a principle designed for quadraphonic recordings - see below Titanium-bonded naked elliptical diamond, mounted on a tapered cantilever to reduce record wear and maintain optimum surface contact Effective Tip Mass of mg 0,4 this is what preserves your vinylMatch with:Beogram 2200 or 2400Beocenter 3600 4600 or 5000Upgrade with:MMC20EN for a further refinement of the diamond profileMost of these are available in my other listings already or I have them in stock so do have a look below, if not I can source them for you in a few days. Please message me for that serviceTESTIMONIALS Manufactured: 1979 - 1985 Designer: Jacob Jensen Colours: BlackPrior to the release of MMC1 - 5 cartridges, Bang & Olufsen had the following MMC range of combined styli and cartridges:MMC cartridges were available with standard ½ mounting brackets, or with easy plug-in, lightweight connectors. These enabled you to mount MMC cartridges onto non-Bang & Olufsen arms. The cartridges plugged directly into Beogram pickup arms without additional mounting gearMMC20S was a stereo cartridge with a spherical framed diamondMMC 20 E was fitted with a framed elliptical diamond which has a high polishMMC20EN had a naked elliptical diamond, mounted on a tiny tapered cantileverMMC20CL utilised a Contact Line naked diamond mounted on a single crystal sapphire cantilever. This shape ensures maximum groove contact. This was the most highly-specified cartridge in the MMC 20 rangeIn 1958, Bang & Olufsen introduced the first stereo pickup cartridge ever made in Europe. This was called the SP1. Since then, many design innovations and the creative use of new materials have kept B&Os cartridges at the forefront of audio technology. By 1979 - 80, Bang & Olufsens cartridges were represented by the MMC 20 series. MMC stands for Moving Micro-Cross; the patented moving-iron principle upon which all B&O cartridges were based. This unique system employed a cross-shaped armature which, among other advantages, guaranteed exceptional stereo separation since each channel moves on a separate axis.The job of any pickup cartridge is to transform the records physical profile (groove modulation) into corresponding electrical signals (which are then amplified or enlarged by the amplifier and turned into audible sound waves by the loudspeaker.A cartridge must perform three separate and exacting tasks if it is to do this job successfully. It must function mechanically (the movements of the stylus in the groove); it must function magnetically (using the physical movements to create changes in a magnetic field); and it must function electrically (using the changes in magnetic flux to generate an electrical current). At each stage, one type of energy is transferred into another, quite different, type. And the transfer must be perfect, with no energy lost and none added from extraneous sources.No cartridge will ever reach this ideal unless the Laws of Physics can be repealed. However, by understanding the relationships between the three transfer stages and continually applying refined engineering techniques, B&Os belief was that each stage of cartridge improvement would bring each successive cartridge closer to the ideal. The MMC20 series therefore represented the closest that modern technology at that time, could possibly afford.Record wear and the cartridgeIf you take music seriously the value of your record collection is likely to be high. Many of your records are likely to be irreplaceable. You will also know that the signals pressed into your vinyl discs are very fragile indeed. The pickup cartridge can be the discs worse enemy since an ill-suited cartridge can mark a record for life in a single play.While B&O is aware that cartridge specifications are inter-related, their research shows consistently that Effective Tip Mass (ETM) is one of the major factors affecting record wear. ETM is the equivalent of the amount of inertia the groove sees in moving or accelerating the stylus tip. Consequently, the higher the ETM value, the higher the force required for a given constant acceleration. Obviously, more force results in more wear.Three elements contribute to ETM. The stylus tip (diamond) contributes with its entire weight and mass. The armature contributes between 5 - 20% of its weight and mass; the cantilever around 30%. B&O has been able to reduce ETM substantially by refining these elements and building them into an integrated unit. The result is a system which not only reduces damage to the groove walls dramatically, but also provides exceptional performance at all frequencies.Bang & Olufsen cartridges have always been highly acclaimed for their low ETM values. The ETM of the MMC 20CL is a mere 0,3mg and in the standard MMC 20 range,, only 0,5mg.MMC cartridges were manufactured by Bang & Olufsen as totally integrated units. This means that the elements were matched, balanced and sealed at the factory. Using a computer-supported testing programme,, each sealed unit was meticulously tested and its performance information automatically registered and packed with each cartridge. The information given included output voltage, relative voltage output (channel balance), channel separation and frequency response. Individually-calibrated frequency response curves were also supplied with the higher-specified MMC 20CL cartridges.WORLDWIDE carriage may cost more OR LESS!! than the listing states (I have to enter an estimated figure) and will be charged in full as per the service chosen and destination country. Eg, air, surface, express, economy. I ALWAYS SEND WITH QUALITY PACKAGING, TRACKING AND INSURANCE. IF IN ANY DOUBT PLEASE ASK FOR A QUOTE. I NEED YOUR FULL ADDRESS FOR THISPostage/Carriage charges: You may have noticed that these has risen lately. The most recent increase is because Ebay are taking 10% of sellers postal fees for their own profit. Before this, both Royal Mail and Hermes increased their charges, particularly for smaller items. Im sorry that these have to be passed onto you. We also try to recycle packaging as much as we can but it will always be top quality and we usually double-box where appropriate too.DELIVERY TO CHINA, ISRAEL, AUSTRALASIA, INDIA, RUSSIAN FEDERATION AND SOUTH AMERICA WILL BE ROUGHLY DOUBLE THE QUOTED INTERNATIONAL PRICE. TO BID IS TO ACCEPT THIS EXTRA PAYMENT. THANKS!About Qualitronics!Im running this business part-time whilst I raise my children. My daughter Issy is 5 years old, the apple of my eye, my teacher and the beneficiary of your purchases. (She says THANK YOU VERY MUCH!) Tommy is 5-months old and his dimples charm the world. I endeavour to source the HIGHEST quality electronics, mostly B&O HiFi and will have owned most of the models in question at some time in my life. This gives me a real experience of the merits to share with you. Im a time-served Sound Engineer and use my trained ear to check each audio item. Its not just sonics though, look out for the weird and wonderful... as long as its well madePRE-SALE ENQUIRIES:Im more than happy to answer any questions, offer advice and make suggestions over the phone and many customers have already found this useful.Please call the customer service line accessed by clicking the ask a question feature or opening the full information link in the business information section below. The full number is not always displayed. Often the first zero is missing. This is ebays procedure and not mine. PRODUCTION DESIGNERS AND PROPERTIES BUYERS A number of my items have now featured in TV ads, theatre and film productions and professional photography having been bought by production designers, location agents and properties buyers. These include a Beocenter 2200, Beocenter 7007 and Beovox S45 speakers among others. I recognise the tight deadlines that you have to work to and the immediacy you often have to work under. For the speediest solution I can offer, including same or next day delivery, suitability of product or advice on matching items to an era (or decade), please use the customer service line accessed by clicking the ask a question feature or opening the full information link in the business information section below. COLLECT IN PERSON:This is actively encouraged! This way, no clumsy or disgruntled delivery person can break it! Do check in advance the location of the item youre interested in. A quick call will be all thats needed to confirm the whereabouts. Whilst the business is registered in London, I also have stock stored near Maidstone, Manchester and the Midlands. I can only accept cash on collection as the payment method if visiting the premises due to the PayPal charge back scam. INSTALLATION:I am increasingly being commissioned to complete installations of the products that I sell. Depending upon your location and items purchased this can be achieved for little more than the usual shipping and insurance costs of the selected units. You receive the assurance of a properly connected system, including optimum placement design and the benefit of a full demonstration, highlighting the tips and techniques garnered from decades of experience and expertise. Recent installations have ranged from a single Beocenter being connected to the existing speakers and unit for an 89-years young-lady for a few hundred pounds to a multi-room, Beocenter, Beogram, Beovox and B&O dedicated cabinet and stands combination, with remote control, for a few thousand pounds.Please use the ask a question feature to access the pre-sales telephone number to discuss your requirements.SOURCING SERVICE:Cant find that B&O product that youve yearned for since you were a kid? Need a rare or discontinued part to repair your unit? If I dont have it in stock, then I can normally source one very quickly. I have a wide network of fellow enthusiasts, collectors, dealerships and retired B&O Engineers whom I can call upon to fulfill your needs.FEEDBACK:Your positive feedback is vital to all good sellers. It lets us know that you are happy, if not delirious, about your purchase. On very rare occasions, there may be an issue with your order, such as courier damage or simply leaving transit screws engaged. (Quite common). I can remedy any such issues to your complete satisfaction most quickly via the telephone or eBay message (without the need to open a case). Please use the contact number shown when you select the ask a question button. I realise that you are very, very busy, only one in three of my clients has found the time to leave feedback that also informs their peers of their positive experience. Indeed all of Qualitronics feedback is from buyers and not inflated by that of other sellers. Your contribution will be greatly appreciated. INTERNATIONAL PURCHASES:Please note that Qualitronics is not responsible for any additional import tariffs or customs charges levied at source or upon delivery. It is the buyers responsibility to check before purchasing for their own countrys charges. VOLTAGE:All electrical items are UK voltage (240v) and B&O UK type xxxx unless otherwise stated.
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