Obseclec.com • 07753 241443 • Obscure Eclectics Parts UK delivery and 30-day returns included on all parts • worldwide delivery available • before and after sales enquiries: 07753 241443 Beocenter 9000 Amplifier module Part numbers Board number: 8002725C, module 60 Also includes modules 61, 65, and the amplifier heat sink Compatibility Beocenter 9000 only Condition In original, tested, working condition Postage The part will be carefully packed, boxed, and sent by recorded post. More parts and accessories for this and other B&O models are listed separately, or are available on request. Worldwide courier delivery is available: the price shown applies to Europe only, and delivery further afield may attract a supplement. Enquire before purchase for further details. All items are promptly despatched, and carefully packed using a minimum of plastic packaging.

Obseclec.com • 07753 241443 • Obscure Eclectics Parts UK delivery and 30-day returns included • worldwide delivery available • before and after sales enquiries: 07753 241443 Beocenter 9000/9500 Rectifier module Part numbers Part number: 8002731 Board number: 8002731G Module number: 62 Compatibility Becenter 9500 and 8500 Also compatible with the Beocenter 9000, but will have a spare socket position for the lack of transceiver Not compatible with Beocenter 9300 Condition The part is in tested, working condition; all four electrolytic capacitors have been replaced in the last 18 months: due to the fit of the original parts extra wires have been added to the negative terminals. Fit is good and, again, the part is working. Postage The part will be carefully packed in an ESD-safe bag, boxed, and sent by recorded post. Postage discounts are available wherever possible if purchasing multiple items. Worldwide courier delivery is available: the price shown applies to Europe only, and delivery further afield may attract a supplement. Enquire before purchase for further details. All items are promptly despatched, and carefully packed using a minimum of plastic packaging. See how we package parts-->

RDS Module UK delivery included • worldwide delivery available • 30-day returns • before and after sales enquiries: 07753 241443 Transceiver and left door sensor 6 module Part numbers 8001288 Board number: 8001256J Supply--> Compatibility Compatible with all two-way Beocenter 2300 and 2500 models: • Beocenter 2300, type 2611-2620 • Beosystem 2500, type 2701-2710 • Beocenter 2500, type 2601-2610 Condition In tested, working condition Refurbished with new, 105-degree capacitors. Postage The part will be very carefully packed in an ESD-safe bag, boxed, and sent by recorded post. Postage discounts are available wherever possible if purchasing multiple items. Worldwide courier delivery is available: the price shown applies to Europe only, and delivery further afield may attract a supplement. Enquire before purchase for further details.

Bang & Olufsen Beocenter 9000/9500/9300 Right panel with 7-segment display 45/46 Module 8002740/8002736 Upper right display panel for Beocenter 9000, 9500, 8000, 8500, and 9300 models. This part is the an A revision part number, but is interchangeable with all versions across all models above. Postage The part will be carefully packed, boxed, and sent promptly by recorded post. Returns and worldwide postage are available.

Beosound Ouverture microcontroller UK delivery included • worldwide delivery available • 30-day returns • before and after sales enquiries: 07753 241443 Beocenter 2300/2500 transformer, power supply, and pre-amp module Description PCB with multivoltage mains transformer, power supply, pre-amp, Power Link, and input Part numbers 8001289 Board number: 6142035L Supply--> Compatibility Beosystem 2500, types 2701-2710 Beocenter 2500, types 2601-2610 Beocenter 2300, types 2611-2620 Voltage can be set by moving a zero Ohm link Condition In tested, working condition The mains socket pins are loose and may need adjusting or replacing. Postage The part will be carefully packed, boxed, and sent by recorded post. Postage discounts are available wherever possible if purchasing multiple items. Worldwide courier delivery is available: the price shown applies to Europe only, and delivery further afield may attract a supplement. Enquire before purchase for further details. All items are promptly despatched, and carefully packed using a minimum of plastic packaging. See how we package parts-->

Bang & Olufsen Beocenter 9500 IR Transceiver 8001226 Receiver and transmitter board for Beocenter 9500 models only. In tested, working condition, with good transmission range. Postage The module will be securely wrapped in an ESD bag, boxed, and sent by recorded post. Worldwide delivery is available.

Obseclec.com • 07753 241443 • Obscure Eclectics Parts UK delivery and 30-day returns included on all parts • worldwide delivery available • before and after sales enquiries: 07753 241443 Beocenter 9500 microcontroller module Part numbers 8001130 More parts for this and other B&O models are listed separately, or are available on request. Compatibility Directly fits all Beocenter 9500 models only. Includes plug-in EPROM IC with software version 1.3. Condition In tested, working, refurbished condition with new electrolytic capacitors and battery holder. Please note that the CR2450 back-up battery shown can’t be included in the post. Postage The part will be very carefully packed in an ESD-safe bag, boxed, and sent by recorded post. Worldwide courier delivery is available: the price shown applies to Europe only, and delivery further afield may attract a supplement. Enquire before purchase for further details. All parts promptly despatched, having been carefully packed using a minimum of plastic packaging See how we package parts-->

Bang & Olufsen Beocenter 9000/9500 Tuner FM/AM Module 10/17 8002715/8050093 FM, AM, RF, and IF decoder PCB with Tuner module for Beocenter 9000 models other than the 9300. For European/UK market. The tuner module is the single part recommended for replacement rather than repair in the service manual. Removed from a working Beocenter, and kept in warm storage. Postage The part will be carefully packed, boxed, and sent by recorded post. Worldwide postage is available.

Bang & Olufsen Beocenter 9300 Centre control panel 42 Module 8002750 For Beocenter 9300 only, as it lacks the level switch for earlier models. Parts available are Rev. F and g Postage The part will be carefully packed, boxed, and sent promptly by recorded post. Returns and worldwide postage are available.

Bang & Olufsen Beocenter 9000/9500 Cassette PCB Module 20 8004528D Tape recorder module for Beocenter 9000 series models, excepting the 9300. Please check for differences with the multiple cassette mechanisms used for each model, and note that the service manual likely misprints this module as part number 8004628. Removed from a working Beocenter, and kept in warm storage. Postage The part will be carefully packed, boxed, and sent by recorded post. Worldwide postage is available.

Beocenter 9300 8001708 UK delivery and 30-day returns included • worldwide delivery available • before and after sales enquiries: 07753 241443 Beocenter 9300 upper display panel circuit boards Part numbers Modules: 44, 45, 46 Part number: 8001708, 8002740, 8002736 Supply--> Compatibility Fits all models of Beocenter 9300 only. The sole difference between the 9300 and 9500/9000 version is a pair of LEDs: the Dolby C lamp, and the cassette continuous play lamp. Condition In tested, working condition Postage The parts will be very carefully packed in ESD-safe bags, boxed, and sent by recorded post. Combined postage and international delivery is available wherever possible.

Obseclec.com • 07753 241443 • Obscure Eclectics Parts UK delivery and 30-day returns included on all parts • worldwide delivery available • before and after sales enquiries: 07753 241443 Beocenter 9300 Amplifier Part numbers Amplifier 8001640, module 10, board number 8001903 Also includes modules 11, 12, 13, and the amplifier heat sink Compatibility Beocenter 9300 only, all types Condition In tested, working condition Postage The part will be carefully packed, boxed, and sent by recorded post. More parts and accessories for this and other B&O models are listed separately, or are available on request. Worldwide courier delivery is available: the price shown applies to Europe only, and delivery further afield may attract a supplement. Enquire before purchase for further details. All parts are carefully packed and promptly despatched

Beocenter 9500 8002740 UK delivery and 30-day returns included • worldwide delivery available • before and after sales enquiries: 07753 241443 Beocenter 9000 and 9500 Upper display panel PCBs Part numbers Modules: 44, 45, 46 Part numbers: 8002738, 8002740, 8002736 Supply--> Compatibility Compatible with type 25xx Beocenters: Beocenter 9000 Beocenter 9500 Beocenter 8000 Beocenter 8500 Untested on a Beocenter 9300, but should work despite the extra lamp positions of the earlier boards Condition In tested, working condition Postage The parts will be very carefully packed in ESD-safe bags, boxed, and sent by recorded post. Postage discounts are available wherever possible if purchasing multiple items. Combined postage and international delivery is available wherever possible.

Bang & Olufsen Beocenter 9300 Amplifier module Board number: 6142447C Part number: 8001903 Should also replace 8001640 Complete amplifier module and heat sink for Beocenter 9300 models only . Original, working condition. Postage The part will be securely packed, boxed, and sent by 2nd class recorded post. Despatch is usually prompt, but please contact me if you need faster or guaranteed delivery. Worldwide postage is also available.

Bang & Olufsen Beocenter 7007/7700 Turntable power supply 17 Module 8005084 Turntable control module in working condition, removed from a recently tested Beocenter. May fit other models: check the plugs and mounting points. Postage The part will be carefully packed and sent by recorded post. Worldwide delivery is available.

Original Bang & Olufsen tonearm part# 2850068 forBeogram 1100Beogram 1900 (5701)Beogram 3400 (5703, 5726)Beocenter 1800 Complete with counterweight, adjustment slider and cartridge socket.Tested fine.Leads were desoldered (not cut) so are still original lengths. This is a used part in excellent condition.All photos are of the actual part. 1403

NEW BOXED BANG & OLUFSEN MMC2 Stylus Cartridge for B&O Beogram 6500 8002 Beocenter 2200 7007 plus these below Inspected, tested and confirmed as new condition - see imagesInterchnagable with any deck that has used an MMC 1 - 5 cartridge. Eg. Beogram RX RX2 TX TX2 1800 2000 3000 3300 3500 4500 5000 5500 5005 6500 7000 8002 9000 9500 and Beocenter 2200 7007 7700MMC means Moving Micro-Cross a superior pick up technology - see belowMMC2 is the SAME spec as MMC1 with the absolute best profile (with the lowest ETM) being labelled as 1s. Get the same spec for hundreds less!ONLY 0.3 milligrammes tracking force that really protects your precious vinylSapphire tubular cantilever and line contact diamond to reduce record wear and maintain optimum surface contact providing extended and more accurate sound reproductionEffective Tip Mass of mg 0,3 B&Os best ever was just 0,25 but if you can find an MMC1 let me know too! - explanation belowBuy with confidence, over 75 new/new other condition MMC cartridge/styli sold in the last 3 years all with 100% feedbackWill fit BeoGram models: RX RX2 TX TX2 1800 2000 2404 3000 3300 3500 4500 5000 5005 5500 6002 6500 7000 8002 8500 9000 9500One MMC2 supplied Photo of all 5 MMC range is for illustration only The tubular construction offered less weight than a solid cantilever but with immense stiffness. The diamond profile was similar to that of the MMC20CL being line contact. The way to look at these cartridges was to imagine an elliptical profile but with both the front and rear facets being scooped out. In this way the vertical contact surface was maximised and the horizontal element kept to a minimum.The MMC1 and MMC2 were essentially the same cartridge with the MMC1 using the best specified diamond tips. The MMC system was carried over from the SP series but taken to an even smaller level.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.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.MMC2 SpecificationsNude multi-radial Contact Line diamond, mounted on a sapphire cantilever Tracking force - grams 1 Diamond Stylus Cont. line nude Cantilever tube Sapphire Effective tip mass mg 0,3 Compliance mg/mN 30 Frequency 20-20000 Hz=/-dB 1,5 Channel separation 1000>dB 25 Output mV/cm/s RMS 0,6 Cartridge weight gram 1,6 I dont like to disguise the postage and packaging costs in the item price. This shipping price includes, packing materials, insurance and first class tracking that is an unfortunate necessity due to buyer fraud. It is not even the full cost, only the Royal Mail charge. Thank you for your understanding.

BANG & OLUFSEN MMC20EN CARTRIDGE STYLUS B&O for BEOGRAM 4002 6000 4004 8000 BEOCENTER BEST MMC20CL REPLACEMENT Inspected, 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 vinyl!Buy with confidence, over 40 new/new other condition MMC cartridge/styli sold in the last year with 100% feedbackThe QUALITRONICS DIFFERENCEMatch with:Beogram 2400 2200 2402 6000 (Radial) Beocenter 5000 4600 7000 7002 2800 Tangential Beogram 4000 4002 4004 6000 Upgrade with:MMC20CL for sapphire tube cantilever and contct line cut diamond tip MMC6000 for true CD4 quadraphonic capabilities Most 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 The MMC 20EN combined cartridge/stylus from Bang & Olufsen was fitted with a naked elliptical diamond, mounted on a tiny tapered cantilever. It had been designed for top of the range record decks such as the Beogram 4002 and 4004. It followed the MMC 4000 cartridge and kept the naked elliptical diamond stylus which had been fitted to its predecessor. Performance for the MMC 20EN was excellent. It was highly regarded by Bang & Olufsen enthusiasts and black vinyl aficionados alike and had been designed especially for record decks which used tangential arms such as the Beogram 4002 when it could read SQ 4-channel quadraphonic-encoded matrix records. It could of course read both monophonic and stereophonic records as well.The MMC 20E is supplied with an elliptical naked diamond stylus with a recommended tracking force of 1g. As with all the MMC range each cartridge was an integrated unit especially to permit the best possible performance. It gave an excellent frequency rate with high channel separationAny of the MMC range of cartridges can be substituted for another model in the range. The cartridge was superceded by the MMC3 but these were for newer phomographs and used a different connector. Radius of curvature: 5 x 1,7 mmFrequency range: 20 - 25000 Hz+/- 1,5dBChannel separation: 1000Hz > 20dB, 40 - 10000Hz > 20dBChannel difference: <1,5dBIntermodulation: <1%Recommended stylus pressure: 1gCompliance: 30 x 10(-6)cm/dyneEffective tip mass: 0,4mgOutput: mV/cm/sec. 0,6mV/47kOhms 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. 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.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. Insurance has almost doubled and many carriers will not accept turntables, speakers or amplifiers, meaning I have to find a specialist. Im sorry that these have to be passed onto you. Qualitronics aims to recycle packaging as much as possible but it will always be top quality and usually its 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 6 years old, the apple of my eye, my teacher and the beneficiary of your purchases. (She says THANK YOU VERY MUCH!) Tommy is a terror-bag Toddler, 2 years 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, Beovox S45 speakers. 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.

BANG & OLUFSEN MMC20E CARTRIDGE STYLUS B&O for BEOGRAM 4002 6000 4004 8000 BEOCENTER 7000 7002 THE BEST BUDGET MMC20 REPLACEMENT Inspected, tested and confirmed as new condition - see images, not the best, sorry MMC means Moving Micro-Cross, a principle designed for quadraphonic recordings - see below Titanium-bonded 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 vinyl! Buy with confidence, over 80 new/new other condition MMC cartridge/styli sold in the last few years with 100% feedback. The QUALITRONICS DIFFERENCE Match with: Beogram 2400 2200 2402 6000 (Radial) Beocenter 5000 4600 7000 7002 2800 Tangential Beogram 4000 4002 4004 6000 Upgrade with: MMC20CL for sapphire tube cantilever and contct line cut diamond tip MMC6000 for true CD4 quadraphonic capabilities Most 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 service TESTIMONIALS

BANG OLUFSEN MMC3 Stylus Cartridge B&O Beocenter 2200, 7700, 7007, Beogram 1800.

Original Bang & Olufsen MMC4 Cartridge/Stylus Uk stock ready for dispatch NOW Sounds great Checked on a spectrum analyser, delicate, accurate and precise matching perfectly to its published specification Tracking perfectly with 1.2gram vertical tracking force MMC4 Specifications Description Titanium-bonded elliptical diamond, mounted on a tapered aluminium cantileverTracking force - grams 1.2Diamond Stylus EllipticalCantilever tube. Tap. alum. .Effective tip mass mg 0,4Compliance mg/mN 25Frequency 20-20000 Hz=/-dB 2,5Channel separation 1000>dB 22Output mV/cm/s RMS 0,6Cartridge weight gram 1,6 Courtesy of Beoworld.org 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. 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.

Original Bang & Olufsen MMC20E Cartridge/StylusUk stock ready for dispatch NOW Checked on a spectrum analyser, delicate, accurate and precise.Tracking perfectly.Sounds great.Stock images appearance will vary slightly.BANG & OLUFSEN MMC20E CART & STYLUS BEOGRAM 6000 4000 8000 BEOCENTER 7000 7002 3600 4600Inspected, tested - see images MMC means Moving Micro-Cross Titanium-bonded naked elliptical diamond, to reduce record wear and maintain optimum surface contact Effective Tip Mass of mg 0,4 this is what preserves your vinyl! MMC20EManufactured: 1979 - 1985Designer: Jacob JensenColours: 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 gear MMC 20 S was a stereo cartridge with a spherical framed diamond MMC 20 E was fitted with a framed elliptical diamond which has a high polish MMC 20EN had a naked elliptical diamond, mounted on a tiny tapered cantilever MMC 20 CL 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 range In 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.

Original Bang & Olufsen MMC4 Cartridge/StylusUk stock ready for dispatch NOW Sounds greatChecked on a spectrum analyser, delicate, accurate and precise matching perfectly to its published specificationTracking perfectly with 1.2gram vertical tracking force MMC4 Specifications Description Titanium-bonded elliptical diamond, mounted on a tapered aluminium cantilever Tracking force - grams 1.2 Diamond Stylus Elliptical Cantilever tube. Tap. alum. . Effective tip mass mg 0,4 Compliance mg/mN 25 Frequency 20-20000 Hz=/-dB 2,5 Channel separation 1000>dB 22 Output mV/cm/s RMS 0,6 Cartridge weight gram 1,6 Courtesy of Beoworld.org 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. Record wear and the cartridge If 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.

Original Bang & Olufsen MMC20S Cartridge/StylusUk stock ready for dispatch NOW Checked on a spectrum analyser, delicate, accurate and precise matching perfectly to its published specificationTracking perfectly with 1.5gram vertical tracking forceTested on a Beogram 2400-2 and 4002 and sounds crisp and clear on both channelsThe model replacement for the MMC3000Matches black systems like the Beocenter 3600 - available with a cartridge in my other listings giving you the look of the original systemKeep playing your vinyl in the manner it was meant to be heardLow Effective Tip Mass protects your most precious vinyl from wear and damage Courtesy of Beoworld.orgMMC 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. 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. This was the last of the MMC 20 range to be discontinued with cartridges being available late into the 1990s. It produced a typical warm B&O sound though lacked some of the more expensive models treble clarity. With an ETM of only 0.5mg, it was a fine cartridge and sturdy with it.The company’s range of MMC cartridges were integrated units, combining both stylus and cartridge as one slip-on unit. Matched, balanced and sealed in the factory each unit was meticulously computer tested with its results printed off and offered to the customer at time of sale. The printout included such information as output voltage, relative voltage output (channel balance), channel separation and frequency response. Manufactured: 1979 - 1985 Designer: Jacob Jensen Colours: BlackMMC 20 CartridgesPrior to the release of MMC1 - 5 cartridges, Bang & Olufsen had the following MMC range of combined styli and cartridges:MMC 20 S is a stereo cartridge with a spherical framed diamond Any questions just get in touch, Id be glad to help.