Vintage B&O Bang & Olufsen Beocenter 7700 in Rosewood for Spares or Repair This auction is for a classic B&O Beocenter 7700 Music System with Record Player, Cassette Player & Radio When it came to me the Tonearm had been detached and I replaced it, it was then working. I replaced the belts on the cassette deck and this was then working. The tuner was working until there was a loud buzz and the system shut down. Since then it will power up but does not respond to any controls. The amps are still working as you can hear the system come on. This may be a simple fix for someone who knows these systems but it is beyond me. Other issues:The Record Deck cover has detached after the B&O double sided foam has perishedOne of the hinges that the Record Deck lifts on has broken and the aluminium deck is loose.The connections from the Amp to an internal circuit board has broken, see pictures, this just means that you cannot switch speaker outputs but you can still connect a pair of speakers to the trailing wires. I will include the broken piece of the cicuit board so it could be repaired.I will also include the old tonearm and all the screws that have been removed There are various cosmetic blemishes, nothing major but it is a used item. NB: There is no cartridge included but I am selling an MMC 3 Cartridge on a separate listing. Please see pictures and feel free to ask me any questions. Due to the delicate nature of this item we recommend collection from Taunton or we can organise a courier at cost. Please see our other listings for more Bang & Olufsen Equipment including another Beocenter 7700 From Beocentral:The ultimate 7000 series music centre. Launched alongside Beocenter 7007, it shared the latter’s styling updates, but went further, with an aluminium cover over the turntable, opened with a pushbutton and incorporating an automatic light, which matched the cover over the tape and programming sections. This made the range-topping Beocenter look very sleek, and clearly different from the other models.All the technical improvements from the 7007 were also included, and were in some cases improved, an example being the standard fitting of an MMC 3 pickup. The big news however was the two-way remote control system, based around an infra red transceiver in the Beocenter and a new type of terminal, the Master Control Panel. The Master Control Panel 7700 featured three LCD display panels, the data on which was sent from the Beocenter 7700 via and infra red link. This may seem like a gimmick, but in the context of multiroom operation it proved invaluable. It became possible for the first time to tell from a distant room what radio station was selected, or exactly what the cassette recorder was doing. The system also worked in the same room as the Beocenter, though the large LED readouts on the Beocenter front panel meant that a simpler terminal could be used, the Beocenter Terminal from the 7007 being suitable and available as an accessory.Choice of loudspeakers was left to the owner, but Beovox S 80.2 was suggested, with the new ‘C’ range of compact models possibly for a second room. Later on, the standard pickup was changed to the MMC 4, and the SC 77 cabinet became available. Throughout the life of the 7000 series, the potential customer was urged “not to mistake them for ordinary music centres”. The Beocenter 7700 reinforced this point beyond any doubt.Payment within 3 working days, returns only accepted if the item is not as described. Combined postage offered where applicable. For auction items please wait for an updated invoice before payment. If purchasing more than one Buy it Now item please use the basket and request the total amount and invoice at checkout. I sell vintage items and accurately describe the cosmetic condition, please use this information in conjunction with the photos to satisfy yourself of the condition of this item. If the item is required to work in any way I will give a separate description of the performance in this area to the best of my ability. Should you have any questions please contact me before bidding or buying. All items will be packaged securely. Please check out our Instagram account for highlights of up and coming additions to our eBay store. FSL

Vintage B&O Bang & Olufsen Beocenter 7700 in Teak for Spares or Repair This auction is for a classic B&O Beocenter 7700 Music System with Record Player, Cassette Player & RadioThe system is working but it has issues so I am selling it as spares or repair. The Record Player is working and is fitted with an MMC4 Cartridge.The Cassette Player will play and rewind but FF is not working, I have fitted new belts.The Tuner seems to be working but I have not tested it with an Aerial Other issues:The Record Deck cover has been glued on by a previous owner and is not very neatThe Cassette and Tuner cover does not lift automatically any moreThe Hinged section where the speakers and external equipment are connected has been screwed down by a previous ownerThe remote sensor is looseThere are various cosmetic blemishes, nothing major but it is obviously used. Please see pictures and feel free to ask me any questions. Due to the delicate nature of this item we recommend collection from Taunton or we can organise a courier at cost. Please see our other listings for more Bang & Olufsen Equipment including another Beocenter 7700 From Beocentral:The ultimate 7000 series music centre. Launched alongside Beocenter 7007, it shared the latter’s styling updates, but went further, with an aluminium cover over the turntable, opened with a pushbutton and incorporating an automatic light, which matched the cover over the tape and programming sections. This made the range-topping Beocenter look very sleek, and clearly different from the other models.All the technical improvements from the 7007 were also included, and were in some cases improved, an example being the standard fitting of an MMC 3 pickup. The big news however was the two-way remote control system, based around an infra red transceiver in the Beocenter and a new type of terminal, the Master Control Panel. The Master Control Panel 7700 featured three LCD display panels, the data on which was sent from the Beocenter 7700 via and infra red link. This may seem like a gimmick, but in the context of multiroom operation it proved invaluable. It became possible for the first time to tell from a distant room what radio station was selected, or exactly what the cassette recorder was doing. The system also worked in the same room as the Beocenter, though the large LED readouts on the Beocenter front panel meant that a simpler terminal could be used, the Beocenter Terminal from the 7007 being suitable and available as an accessory.Choice of loudspeakers was left to the owner, but Beovox S 80.2 was suggested, with the new ‘C’ range of compact models possibly for a second room. Later on, the standard pickup was changed to the MMC 4, and the SC 77 cabinet became available. Throughout the life of the 7000 series, the potential customer was urged “not to mistake them for ordinary music centres”. The Beocenter 7700 reinforced this point beyond any doubt.Payment within 3 working days, returns only accepted if the item is not as described. Combined postage offered where applicable. For auction items please wait for an updated invoice before payment. If purchasing more than one Buy it Now item please use the basket and request the total amount and invoice at checkout. I sell vintage items and accurately describe the cosmetic condition, please use this information in conjunction with the photos to satisfy yourself of the condition of this item. If the item is required to work in any way I will give a separate description of the performance in this area to the best of my ability. Should you have any questions please contact me before bidding or buying. All items will be packaged securely. Please check out our Instagram account for highlights of up and coming additions to our eBay store. FSL

EZ Sell USA Consignment Resale Center is not the owner or seller of these goods, but merely a bailee acting on behalf of the seller to facilitate the sale of the goods by holding the goods until such time as a sale is completed and the goods are shipped to the buyer. EZ Sell USA Consignment Resale Center has used its best efforts to inspect the item(s) for sale and create descriptions and furnish photographs that fairly and adequately depict the type, condition and image of the goods at the time of sale. EZ Sell USA Consignment Resale Center makes no express or implied warranties or representations regarding the condition or suitability of the goods and to the extent allowed by law, specifically disclaims any express or implied warranties, including but not limited to any warranty of merchantability or fitness for purpose. EZ Sell USA Consignment Resale Center reserves the right to cancel bids on any item due to feedback. Powered by CrossPostit

Bang & Olufsen - Beomaster Terminal - Fernbedienung für Beomaster 7007 / 7700 Funktioniert Zustand gebraucht - siehe Bilder Privatverkauf: keine Rückgabe, keine Gewährleistung !!!

Deutsch:Die Fernbedienung ist voll funktionsfähig und trägt nur geringfügige Gebrauchsspuren -- schauen Sie sich bitte die Bilder an. Dieses Model wurde mit Beocenter 7007 und 7700 geliefert, funktioniert aber auch mit Beocenter 7000 und 7002.Privatverkauf, daher keine Garantie, keine Rücknahme und kein Umtausch, aber bemerken Sie bitte meine 100% positiven Bewertungen. English:The remote control is fully functional and has only minimal traces of use -- please take a look at the pictures. This model was supplied with Beocenter 7007 and 7700, but it also works with Beocenter 7000 and 7002.This is a private sale, hence no guarantee, no returns and no exchanges, but please note my 100% positive feedback. Français:La télécommande est entièrement fonctionnelle et ne montre que des signes mineurs dutilisation -- veuillez regarder les photos. Ce modèle était fourni avec les Beocenter 7007 et 7700, mais il fonctionne également avec les Beocenter 7000 et 7002.Ceci est une vente privée, donc aucune garantie, aucun retour et pas déchanges. Merci de noter mes 100% dévaluations positives.

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

Bang und Olufsen Beocenter 7700 + 2 Boxen. Das Beocenter konnte nur bedingt auf Funktion geprft werden. Soweit ich es beurteilen kann funktioniert aber alles jedoch falls mglich gerne vor Abgabe eines Gebotes einmal vorbeischauen. Artikelstandort: 58089 Hagen Kein Versand! Nur Abholung mglich! Fr Fragen stehe ich zur Verfgung.

EZ Sell USA Consignment Resale Center is not the owner or seller of these goods, but merely a bailee acting on behalf of the seller to facilitate the sale of the goods by holding the goods until such time as a sale is completed and the goods are shipped to the buyer. EZ Sell USA Consignment Resale Center has used its best efforts to inspect the item(s) for sale and create descriptions and furnish photographs that fairly and adequately depict the type, condition and image of the goods at the time of sale. EZ Sell USA Consignment Resale Center makes no express or implied warranties or representations regarding the condition or suitability of the goods and to the extent allowed by law, specifically disclaims any express or implied warranties, including but not limited to any warranty of merchantability or fitness for purpose. EZ Sell USA Consignment Resale Center reserves the right to cancel bids on any item due to feedback. Powered by CrossPostit

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.

Bang & Olufsen Beocenter Terminal 7007 7700 Remote Control Type 2043 B&OGood used condition

EZ Sell USA Consignment Resale Center is not the owner or seller of these goods, but merely a bailee acting on behalf of the seller to facilitate the sale of the goods by holding the goods until such time as a sale is completed and the goods are shipped to the buyer. EZ Sell USA Consignment Resale Center has used its best efforts to inspect the item(s) for sale and create descriptions and furnish photographs that fairly and adequately depict the type, condition and image of the goods at the time of sale. EZ Sell USA Consignment Resale Center makes no express or implied warranties or representations regarding the condition or suitability of the goods and to the extent allowed by law, specifically disclaims any express or implied warranties, including but not limited to any warranty of merchantability or fitness for purpose. EZ Sell USA Consignment Resale Center reserves the right to cancel bids on any item due to feedback. Powered by CrossPostit

Bang und Olufsen Beocenter 7700 + 2 Boxen. Das Beocenter konnte nur bedingt auf Funktion geprft werden. Soweit ich es beurteilen kann funktioniert aber alles jedoch falls mglich gerne vor Abgabe eines Gebotes einmal vorbeischauen. Artikelstandort: 58089 Hagen Kein Versand! Nur Abholung mglich! Fr Fragen stehe ich zur Verfgung.

Bang & Olufsen B&O Beocenter Terminal 7007/7700 remote control Untested.

Bang Olufsen Rabbit s Ear FM Antenna Aerial 8902010 Beocenter 2200 7700 B&O.

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 Rabbit s Ear FM Antenna Aerial 8902010 Beocenter 2200 7700 B&O. BANG AND OLUFSEN B&O RABBITS EAR FM ANTENNA AERIAL 8902010 FOR BEOCENTER, BEOMASTER AND BEOSYSTEM 2200 3300 5000 7700 AND MORE A much sought after accessory for Beocenters and Beosystems in excellent conditionComplete your unit with this retracting, pivoting antenna aerial to be positioned for the best reception and retracted to keep it safe from enquiring little fingersDroplet tip keeps furniture, walls and skin safe from scratches and denotes the original 70s issue version. (Theres a 75 Ohm Coaxial connection version that was produced for the Beosound series) Iconic Rabbits Ear style aerial antenna for B&O Bang and Olufsen Beocenters and Beosystems - completes the look of your vintage system Uses a B&O dedicated connector. Please see the pictures and check your model for compatibility. It will be a socket next to the TV-type co-axial connection and labelled as 240 - 300 ?Uses the 240 - 300 ohms range for resistance giving superior reception, a special feature of B&O systems with a dedicated 2-pin connection. Standard co-axial aerials operate at just 75 ohms. Beocenter dedicated bracket needed for correct positioning see photograph. These are often broken off over time. Replacement bracket and screw can be supplied for £5.95Please note the model number sticker is no longer present

EZ Sell USA Consignment Resale Center is not the owner or seller of these goods, but merely a bailee acting on behalf of the seller to facilitate the sale of the goods by holding the goods until such time as a sale is completed and the goods are shipped to the buyer. EZ Sell USA Consignment Resale Center has used its best efforts to inspect the item(s) for sale and create descriptions and furnish photographs that fairly and adequately depict the type, condition and image of the goods at the time of sale. EZ Sell USA Consignment Resale Center makes no express or implied warranties or representations regarding the condition or suitability of the goods and to the extent allowed by law, specifically disclaims any express or implied warranties, including but not limited to any warranty of merchantability or fitness for purpose. EZ Sell USA Consignment Resale Center reserves the right to cancel bids on any item due to feedback. Powered by CrossPostit

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

Bang & Olufsen Beocenter Terminal 7007 7700 Remote Control Type 2043 B&OGood used condition

Bang und Olufsen Beocenter 7700 + 2 Boxen. Das Beocenter konnte nur bedingt auf Funktion geprft werden. Soweit ich es beurteilen kann funktioniert aber alles jedoch falls mglich gerne vor Abgabe eines Gebotes einmal vorbeischauen. Artikelstandort: 58089 Hagen Kein Versand! Nur Abholung mglich! Fr Fragen stehe ich zur Verfgung.

Bang & Olufsen B&O MMC5 Stylus/Cartridge For Beocenter 7700/7007 Etc. Bang & Olufsen MMC5 Stylus/Cartridge fully tested and in excellent working order. A good example of this popular stylus. Please study the photos as they make up part the overall description. Thanks MMC5 Product Specifications Description Titanium-bonded elliptical diamond, mounted on a straight aluminium cantilever Tracking force - grams 1.5 Diamond Stylus Elliptical Cantilever tube Straight alum. Effective tip mass mg 0,5 Compliance mg/mN 20 Frequency 20-20000 Hz=/-dB 3 Channel separation 1000>dB 20 Output mV/cm/s RMS 0,6 Cartridge weight gram 1,6

Bang & Olufsen Beocenter 7700 with S45 Speakers and Stands. This B&O unit is in great working and cosmetic condition. Tested main functions, on multiple tapes and records for multiple hours, all worked as it should, sound is great. Cosmetically in very good condition, no major scratches or scuffs (see pictures). Speakers in excellent condition inside and out. MMC4 cartridge. As for any vintage unit no guarantee of any kind and no returns due to shipping cost and weight. Please ask any questions or request more pictures or to test any additional functions . Shipped safely packaged to avoid any damage.

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 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.