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 - 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 gearMMC 20 S was a stereo cartridge with a spherical framed diamondMMC 20 E was fitted with a framed elliptical diamond which has a high polishMMC 20EN had a naked elliptical diamond, mounted on a tiny tapered cantileverMMC 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 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.

Original Bang & Olufsen MMC4000 Cartridge/StylusUk stock ready for dispatch Checked on a spectrum analyser, delicate, accurate and precise matching perfectly to its published specificationTracking perfectly with 1gram vertical tracking forceNo stock images what you see is what you getMMC4000 Product SpecificationsElliptical naked diamond Radius of curvature 5 x 1,7 mm Frequency range 20 - 25000 Hz+/- 1,5dB Channel separation 1000Hz > 20dB 40 - 10000Hz > 20dB Channel difference <1,5dB Intermodulation <1% Recommended stylus pressure 1g Compliance 30 x 10(-6)cm/dyne Effective tip mass 0,4mg Output mV/cm/sec. 0,6mV/47kOhmsMMC4000Large photoManufactured: 1974 - 1980Designer: Subir PramanikColours: Silver MMC 4000This pick-up cartridge was specially designed for use in Bang & Olufsen record-players with tangential arms.It was designed to track SQ 4 channel matrix records and tracked both mono and stereo records extremely well. It was fitted to Beogram 4002. The stylus was an elliptical naked diamond, radii 5x17u. Recommended tracking force was 1g. Each MMC 4000 was designed as an integrated unit. This meant that all critical components were designed and constructed as an entity in order to give optimum performance. The stylus unit was not separately replaceable as it was part of the integrated unit. Frequency range was 20-30,000 Hz ± 3 dB. Effective tip mass was a mere 0.5 mg and compliance was higher than 30x10-6 cm/dyne.

Original Bang & Olufsen MMC20CL Cartridge/Stylus perfect working order Uk stock ready for dispatch NOW Checked on a spectrum analyser, delicate, accurate and precise matching perfectly to its published specificationTracking perfectly with 1gram vertical tracking force The first B&O cartridge to use a single crystal sapphire cantilever. Get yourself the originalSingle crystal sapphire cantilever offers a very rigid but light structure five times stiffer than aluminium and 21% stiffer than beryllium transferring more of the signal from your vinylEffective tip mass is a very low 0.3mg which ensures low record wear and a high stylus resonance well beyond the audible rangeThe body itself forms an effective Mu-Metal screen against stray hum fields practically eliminating magnetic interference 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. Any questions just get in touch, Id be glad to help.

Original Bang & Olufsen MMC20CL Cartridge/Stylus perfect working order Uk stock ready for dispatch NOW Checked on a spectrum analyser, delicate, accurate and precise matching perfectly to its published specificationTracking perfectly with 1gram vertical tracking force The first B&O cartridge to use a single crystal sapphire cantilever. Get yourself the originalSingle crystal sapphire cantilever offers a very rigid but light structure five times stiffer than aluminium and 21% stiffer than beryllium transferring more of the signal from your vinylEffective tip mass is a very low 0.3mg which ensures low record wear and a high stylus resonance well beyond the audible rangeThe body itself forms an effective Mu-Metal screen against stray hum fields practically eliminating magnetic interference 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. Any questions just get in touch, Id be glad to help.

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.

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 Bang and Oluffsen Beogram 1700 Tested Working - MMC 20 EN Cartridge can Rebuilt by Sound-Smith.com Turntable Very Good Condition Attention: We Ship UPS, USPS and depending on the item. Please, always view pics closely before bidding ! We are a reputable Stereo Store with 45 years experience. All items are shipped fully Insured. World Class packaging guaranteed to arrive as shown in the pictures. Lower 48 States only Please.

I do Estate Cleanouts here in upstate New York.. I pick up Thousands of items.. Here is some of what I have.. I pick up ALOT of New & Older Electronic items.. I am NOT an expert on electronics.. Here is a Vintage McIntosh MAC 1700 Receiver -Take a LOOK !!!!!! I plugged it in and it powered up.. Sold As is No returns.. Check out my other auctions and feedback. Email with any Questions Thanks..

BANG & OLUFSON Turntable . BEOGRAM 1700 . MMC Cartridge original . Stylus looks a bit worn . Does lock in the record groove fine . BEOGRAM 1700 . CART : MMC 20 E . USED . Includes what is shown in the photos . Please only bid if you want it as described . No guarantee on Fidelity may be poor . Tip looks well used so ...... VG++ Condition . All items are very well packed . PLEASE SEE PICTURES !

McIntosh MAC 1700 receiver. It is the earlier version of 1700, has BIAS adjustment pots (verified and set to service manual spec). All small electrolytic caps replaced. Big filter caps as well as multi-section caps show perfect values on ESR meter. (Replaced one 500uf section that was open).Also replaced 6EA8 tube in FM MPX section, responsible for Stereo indicator light to work correctly. All original output transistors are in place. Replaced all (4) light bulbs for glass illumination, as well as FM and stereo lamps (not all shown in replaced part pic). Cleaned and polished thoroughly - face plate and knobs. Close to mint. Solid performer ! Track Page Views With Auctivas Counter

Bang & Olufsen Beogram 1700 Record Player/Turntable T5731with MMC 20 S Cartridge and Stylus Good overall condition but requires repair / servicing. Stylus appears to be in good condition PaymenteBay, or Cash on Collection Shipping Prices (which includes the cost of Full Insurance ) Collection from Bristol BS7 - FreeUK Mainland from £14.90Rest of the World from £19.90Items will be well packed and Fully Insured. Please Note: A signature is required on delivery Non UK Customers - ImportantVAT, Import Tax, or Customs Duty may be payable Please check. It is the buyers responsibility to pay these chargesThe full sale value of the goods will be declared on Customs Form*Returns*Returns are ONLY accepted if the item is faulty or is not as describedItems are checked, photographed, and security marked before shippingI am confident you will find the listing is accurate Thank you for looking