~Vintage~Beogram 1800 DUST COVERComes with screws and hardware. Very Good Condition. Normal 0 false false false EN-US X-NONE X-NONE

~Vintage~Beogram 1800 DUST COVERComes with screws and hardware. Very Good Condition. Normal 0 false false false EN-US X-NONE X-NONE

ITEM DESCRIPTION AND CONDITION Aesthetically in good condition some wear and tear commensurate with age, does not power up so selling as for repair. Shipping not available as record decks not insured by all carriers, can send with man and van service £40 - £60 to South East and London DIMENSIONS IN CM: CONDITIONAll our items are pre-owned and un- restored so unless stated as in Very Good or Excellent Condition then the item is likely to have some minor wear and tear commensurate with age. Due volume of stock we only lightly clean items, so most could be improved /embellished with a bit of elbow grease.We always aim to highlight any obvious/major damage, however please do also look closely at pics for a good depiction and get in touch if any queries. COLLECTIONSARE BY APPOINTMENT ONLY - WE ARE NOT A RETAIL UNIT. Without a confirmed appointment we cannot guarantee availability. Collections are usually possible week days during 9:30am - 4:00pm. Weekends and Evenings are not usually possible due to family commitments. Failure to collect items within a reasonable timeframe will result in items being cancelled. COURIER SERVICEFor larger items we are working with a number of courier partners who can offer delivery on most items across the UK. Delivery timeframes are usually within 7-10 days. 2-3 weeks if Scotland or items are multiple/excessively large. To receive a delivery quote, please share postcode ahead of purchase to receive a price. If you are happy with the price, please confirm via message on ebay. We will arrange organise collection with courier and then courier will be in touch to arrange your delivery. To simplify shipping and admin please pay the courier cash on delivery. All items will be wrapped before dispatch. ?London Deliveries: £50 - £70?Rest of UK Deliveries: £50 - 70 (£80+ if multiple or oversized items) You are welcome to use your own courier, man and van service. Please make sure they know that collections must be on a pre-arranged week day between 9:30am - 4:00pm. We do not work with Large Freight Operators due to inflexible collection times and no direct phone contact. As with all collections once you have a courier secured you / they must contact us to agree and confirm the collection date and time so we can confirm availability, and be there to meet with the courier collecting the item and assist with loading if required. POSTAL DELIVERYIf postal delivery is offered, items will usually be posted within 3 -7 days of purchase and sent via a tracked/recorded service. PAYMENT & RETURNSPayments are managed by Ebay payments or you can use Paypal, please pay within 24 hours of purchase, WE DO NOT ACCEPT CASH ON COLLECTION. If no communication is made within 72 hours then the item will be re-listed and an unpaid item will be filed. We are business sellers so buy with confidence, you are protected by Ebay. We If you are unsatisfied or have simply changed your mind, as long as these are returned within 14 days of receipt of the item. Please note that the postage price for returning items is the Buyers responsibility.

~Vintage~Beogram 1800 DUST COVERComes with screws and hardware. Very Good Condition. Normal 0 false false false EN-US X-NONE X-NONE

1960s Rosewood Bang and Olufsen Beogram 1800 Record Player Turntable. This is a classic piece of 1960s vintage audio. Extremely rare and hard to come across, this record player exemplifies that 60s sound. The record player has been looked at and the cartridge has been rebuilt and is better than when it was new and has a 5 year warranty on the cartridge. The are a few marks on the surface, but it doesn’t detract from the look and playability of the turntable. The top cover is in great condition and removes completely The record player will require a pre amp through to the amp stage, we were going to provide a preamp however it’s probably best for the end user to choose their own. If you want something that looks beautiful, plays amazingly and is a real piece of mid Century Vintage audio. Please follow on Instagram @smithandhallslondon and check our website for discounts

This is a Bang & Olufsen B & O Beogram 1800 turntable with an upgraded MMC2 Cartridge. Im selling this great audio piece for a friend who was the original owner. She called it her baby and pampered it since getting it when new. It sounds wonderful and is in exceptional cosmetic condition with only a limited number of scratches. All functions operate as they should. It is listed Type 5813 with a 3237021 serial number.It comes with the original 6/5/85 invoice from Harvey Electronics, as well as its manual booklet, the B&O turntable brochure at that time, and original stylus brush.Please review all the images to see and assess its condition for yourself

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

PLEASE NOTE I CANT SHIP UNTIL AUGUST 12th…..I just paid $150 to have it serviced. Very nice and super rare MCM2 Cartridge. Also included is the manual and original invoice from 1984. Check out the photos. This unit performs great. 59.99 to ship UPS. NO SALES TO A PO BOX ADDRESS AND NO SALES TO ALASKA OR HAWAII OR US TERRITORIES

~Vintage~Beogram 1800 DUST COVERComes with screws and hardware. Very Good Condition. Normal 0 false false false EN-US X-NONE X-NONE

Plattenspieler von Bang & Olufsen Model BEOGRAM 1800 - 60er Jahre Größe: 44 x 32,5 x 13,5 cm Gewicht: 8 Kg Leider dreht sich die Platte zu langsam. Keine Ahnung warum. Deshalb defekt angeboten, da ich die anderen Funktionen nicht prüfen kann. Nichtraucher Tierlos

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

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

stock image appearance may vary slightly but will be part shown in good working order

B&O Beogram 1800 Type 5213 Bang and Olufsen Teak & Chrome Record Deck Spares. Spares repairs only Motor doesn’t appear to work, may be seized. Belt had also slipped off, it is old and stretched and would also need replacing, will include it with record deck No cartridge or stylus included, have removed it to sell separately. When I plugged deck into an amplifier and light brushed the stylus a sound could be heard. So sound reproduction part of deck appears to be working fine so issues are hopefully confined to mechanical parts. Unit connects to amplifier via male 5 pin connector. Cable approx 3ft long Chrome platter has some small marks and knocks. Teak wooden surround/ plinth is good with some knocks and marks. Lift off lid is chrome frame with a dark but clear plastic top, top is marked and scuffed but not cracked. Lid is a lift off only and is not hinged or attached to deck and in any way When investigating the non functioning of deck I took platter apart. When I did this I discovered the foam layer beneath metal platter had degraded and fell apart when touched. I cleaned this away and put back together without replacing it. As a result middle of deck stands higher than it would have done, see photos. All other parts including the clips have been put back on exactly as they were. Arm is good condition, some light marks. Arm is held in position in its rest by small plastic clip that pulls down into place, see photos Unit is fitted with a UK hardwired mains power lead Colour is Silver/Chrome and Teak/ Wood plinth Unit measures 44cm across the front x 32.5cm deep x 14cm tall (lid on)

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 MMC2 Cartridge/StylusNewly refurbished Bang & Olufsen MMC2.Refurbished suspension with an original Bang & Olufsen nude multi-radial contact line diamond mounted on a sapphire tube cantilever.Tracking perfectly with 1gram vertical tracking forceMMC2 Specifications :Nude multi-radial Contact Line diamond mounted on a sapphire cantileverTracking force 1 gramNude Contact Line diamond stylusCantilever tube - sapphire Effective tip mass 0.3 mgCompliance mg/mN 30Frequency 20-20000 Hz=/-dB 1.5Channel separation 1000>dB 25Output mV/cm/s RMS 0.6Cartridge weight 1.6 grams 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 MMC4 Cartridge/StylusUk StockSounds 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 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 MMC5 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 1.5gram vertical tracking force 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 MMC3 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 MMC3 Product SpecificationsDescription Nude elliptical diamond mounted on a tapered aluminium cantilever Tracking force - grams 1.2Diamond Stylus Elliptical nudeCantilever tube Tap. alum. .Effective tip mass mg 0,35Compliance mg/mN 25Frequency 20-20000 Hz=/-dB 2Channel separation 1000>dB 25Output 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.

stock image appearance may vary slightly but will be part shown in good working order

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 MMC4 Cartridge/StylusUk StockSounds 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.