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BeoCord 7000

Bang & Olufsen BeoCord 7000

Beocord 7000 was a high-quality cassette recorder used specifically with Beosystem 7000. When playing cassettes, the order of the tracks could also be changed and the recorder could also find a specific track on a tape. Other functions included Auto Reverse, Auto Record levels, Dolby B and C as well as Bang & Olufsen’s recording system HX-Pro, which ensured that the sensitive treble range is captured in recording.

Beocord 7000’s features were supplemented by an abundance of special features. Space available precludes a more full description of elements such as the design of the peak programme meter, locally operated functions such as microphone recording, memo set/go, adjustment of the maximum record level and so on.

Main features:

  • Auto record level
  • Auto track search/auto reverse
  • HX Pro
  • Auto Dolby B-C
  • Auto tape switch
  • All operation available from Beolink 7000, with full display readout of track bar, counter, record level, Dolby NR, auto reverse functions, sequence programming etc.

Recording with Beosystem 7000 was a system feature, with benefits such as automatic signal routing, record lock, etc. Beocord 7000 contributed a lot to the convenience of the system and the unique auto record level was the feature that made remote controlled recording a real possibility – without compromising the quality of the recording. To further ensure a high and consistent sound quality level Beocord 7000 was equipped with HX Pro.

Auto record level

Auto record level is a unique Bang & Olufsen feature and ensures a uniform and optimal recording level from all sources, from tape to tape, without overload. Major benefits of auto record level are:

  • all tapes recorded with auto record level have the same optimum level, without overload and therefore without distortion
  • a recording can be started immediately and directly, without any pre-adjustments
  • you do not have to supervise a recording to adjust record level and the system recording even stops the recording when the source runs out, or stops the source when the tape runs out
  • if auto record level interferes and adjusts the recording it is done in such a way that it is not noticeable in playback. The dynamic range of the recording will not be impaired and the adjustments are carried out so early that overload is precluded.

The assets of auto record level are obvious when a comparison is made between those carried out on a standard recorder without auto record level and those with.

Recording on a standard recorder requires you to supervise the recording in order to step in if the manually set input level is too high. In this case you would have to adjust the record level down when a signal with a high dynamic content is to be recorded. If this is not carried out the tape will be overloaded and the music distorted. Without auto record level, copying is in real-time, which means that you will have to pay attention all the time you are recording (or risk a distorted recording). And when a very wide dynamic signal threatens to overload the tape being recorded, the record level must be lowered quickly, which will often be audible in subsequent playback, either as a suddenly lowered output volume or as a distorted signal because the record level was lowered too late.

Auto record level is an efficient remedy to this problem, without both disadvantages mentioned above. Primitive solutions reduce the record level when powerful signals are recorded and increase the record level when weak or no signals are recorded. The result can be a fluctuating dynamic range with, for example, pauses between tracks causing the recording level to rise dramatically and the noise level with it.

The Bang & Olufsen solution

The auto record level in Beocord 7000 was monitored by the microcomputer interacting with the peak programme meter indicator on the front of the cassette deck. Auto Record Level only reduces the record level and only if the signals exceed the set value for a certain period. In this way brief noise pulses, such as the ones resulting from scratches on a record, do not lower the record level. When a signal of more than +2 dB above the set value is encountered, the microcomputer lowers the record level with 2 dB. The recording continues at the lowered level unless even louder signals appear and trigger new reductions.

Other advantages of auto record level are:

  • it is applied to all sources, even if you record sound from a video source
  • the preset values can be changed, e.g. if you use special tape formulas
  • auto record level can be overridden while you are recording, or you can make a recording with manual adjustment of the record level

You did not have to pre-adjust Beocord 7000 before you started a recording. Another feature was the auto tape switch, i.e. an automatic adjustment to the three tape types, metal, chrome and ferro, by means of three electronic sensors located in the cassette holder. Auto-reverse was the default mode both in recording and playback, i.e. Beocord 7000 automatically continued the recording (and playback) on side two, when side one ran out. The turning time from side one to two was very short, because an optic sensor registered the lead-in tape and executed the 180 degree turning of the tape head immediately. Auto reverse could be cut out manually to protect side two from being recorded. This had to be done prior to record start.

Track Search

Beocord 7000 featured track search, based on pauses between individual tracks. You could also make a sequence programming, operated just like CD. Track search was available no matter if the track was on side one or two of the tape. Even if you executed a manual TURN function (i.e. change playback direction) the microcomputer registered the turning point and if you selected a track after the turning point the search for this track would be initiated at the turning point. Track numbers could be displayed on Beolink 7000.

Auto Dolby

Another convenience was the Auto Dolby function. All tapes recorded on a Beocord 7000 contained inaudible information as to whether the tape was recorded with Dolby B, Dolby C or no Dolby noise reduction. The registration of noise reduction type was dynamic and in case the circuit registered a change during playback the reduction was automatically changed. If no signal was registered, e.g. on a pre-recorded tape, the noise reduction last selected would remain active, until altered manually (see more below).

HX-Pro

Beocord 7000 was equipped with HX Pro, like all other ‘stackable’ Bang & Olufsen audio tape recorders. HX Pro is an acronym for Headroom Extension Professional and tapes recorded with HX Pro give a better reproduction quality on playback, no matter which tape deck they are played on. Both the dynamics and the the signal capability in the treble range is improved. The improvements are most noticeable in the reproduction of treble signals, but also the midrange will be influenced in a positive way. At 10KHz the signal loading capability is improved by approximately 8dB for chrome tape, 5dB for ferro tape and 3dB for metal tape formulas.

Beocord 7000 could ideally be used as part of Beosystem 7000.

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Beo4

Bang & Olufsen Beo4

Three variations on a theme… Beo4 over the years. From the Mark I version introduced in 1994 with its central ‘AV’ button, the Mark II version introduced in 1999 to accommodate the then recently introduced DVD format, and the November 2004 Mark III inception with its noticeable DTV, VMEM and AMEM buttons.

Beo4 is the key to all current Bang & Olufsen television and music systems. A remote control must be able to be operated in the dark, without glasses and without moving your eyes from the screen. That’s why the most often-used controls on the Beo4 are gathered together on one multi-functional button which you can control with just your thumb: programme shift, video play and wind. Choose a function and your command is registered on the Beo4’s LCD display. Simple and logical, so the manual can be put away after a few days. The design is ergonomical and so tough that Beo4 can be left in the hands of the youngest user.

Beo4 Mark III Update – November 2004

Released in order to ensure that the remote control keeps up to date with products currently sold, as well as new products on the horizon, Beo4 Mark III was produced for sale at the end of 2004.

Visual changes were made to the V.TAPE, A.TAPE and SAT buttons and are now renamed V.MEM, A.MEM and DTV. A number of changes have also been made to the ‘LIST’ functions. The part number of the new remote is: 1162700

Beo4 remote control is provided with all new Bang & Olufsen TV receivers. It may be purchased as a separate accessory (around £155 – 2004 prices) to control audio equipment and lights. It works with all recent (post-1994) Bang & Olufsen products and also Beolink® around-the-house systems. It is one of the most powerful remote controls on the market; so much so, that the user needs not point it directly at the appliance being controlled.

The star-shaped control can be operated by your thumb alone – you don’t need to move your eyes to look to see what you’re doing. Extra ‘buttons’ can be programmed into the unit to control other not so much needed functions of Bang & Olufsen products.

Plastic-free surface on remote control units

“Surface treatment is very important to Bang & Olufsen. It affects not only the appearance but also the feel of a piece of equipment” states Technology Director Peter Petersen. “A product is created to be used, and you can’t do that without touching it.”

“A Bang & Olufsen terminal – or remote control – must sit nicely and comfortably in the hand. So we don’t coat it with plastic. A plastic terminal somehow doesn’t feel as genuine as ours. And gets hot and sweaty, too. After a great deal of work on the choice of materials we have selected zinc for all our terminals. It sits well in the hand and is pleasant to touch. The heat from the hand is conducted away, so the terminal never feels clammy. In design terms, this choice represents an extra form of quality.”

Bang & Olufsen terminals, of course, are not just attractive to the eye and pleasing to the hand. User interface is in fact one of Bang & Olufsen’s main concerns, where technology is really put in the service of humankind. Through logic operations, in fact, B&O’s remote control units make life with the product a pleasant experience.

Handing it intuitively to Bang & Olufsen: a history of remote controls

Bang & Olufsen’s first remote control came on the market in 1974. That year, Bang & Olufsen launched two products, each with a remote control of the same design. It was the size of a small cigar case and had a steel top plate. These two remote controls, which were not integrated, were the Beovision 6000 Commander and the Beomaster 6000 Commander. The TV remote control allowed the user to select programmes and picture quality from the comfort of an armchair. The remote control for the stereo enabled the user to control a four-channel sound system.

Before too long remote controls became smaller, in the form of Beovision 6002’s Beovision Control Module. The buttons on its surface were designed so that you could use the remote control without looking at it. Those for turning down a setting were shaped to curve downwards, while the buttons for turning up a setting curved upwards.

The following Video Terminal was cast in zinc so that heat was conducted away from the palm of the hand. This remote control, which used an infrared beam, was launched in 1980. It was quite narrow, with a keypad that both resembled and functioned the same way as the buttons on a telephone. This was another way of helping the user to operate the remote control without looking at it. This version introduced additional buttons for operating Teletext TV.

The following year, Bang & Olufsen added functions for operating video recorders and a new version of the Beovision Control Module. System integration had advanced to the point of sharing a remote control between the Beovision 8800 and Beocord 8800 Video.

The next generation of remote controls arrived when it became necessary to transfer more operating information that, for purely technical reasons, could not be incorporated into a single remote control. Now sound could be transferred between the television and the stereo system. This became possible with the combination of a video terminal and an audio terminal into an AV Terminal – the forerunner of Beolink 1000 – in 1985.

In 1987, all audio, video and audio/video remote controls were integrated into one unit with the Beolink 1000. Since then, Bang & Olufsen has pursued a strategy of only having one remote control for all products – most recently with Beo4, which is capable of operating all products. Beo1 is a minor exception to the strategy. It only operated Beocenter 1 and Beovision 1 and was intended for a new customer segment, which it did not completely succeed in capturing. For this reason, it was replaced by the Beo4 from autumn 2002.

Beo4 Specifications

In general, Bang & Olufsen’s development of remote controls can be summed up in a simple concept: Intuitive use. It is important to be able to adjust sound and picture from wherever you may be in the home. Accordingly, Bang & Olufsen has chosen simple functions – and that, of course, also has implications for the design of the remote control. It’s easy enough to pack a lot of buttons and functions into a remote control, but Bang & Olufsen has chosen a simple operational philosophy for the customer.

Beo4 has relatively few buttons, but it can retrieve a lot of information if required. That is what you call quality. Since the development of the first remote control cast in zinc, the company’s remote controls have had a certain intrinsic weight. This helps to give a sense of quality. Last but not least, the remote control is renowned for having a long range. You don’t have to get into a special position to communicate with the system. Once you have the remote control in your hand, you are ‘in total command’.

(Taken from Beolink Magazine: ‘The First 50 Years of Television’ © Bang & Olufsen a/s 2002)

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BeoLab Penta

Bang & Olufsen BeoLab Penta

These tall and elegant speakers were developed according to a totally new acoustic principle. They sounded just as magnificent as they looked. Because there were no parallel surfaces in the pentagonal cabinet, the design reduced the internal standing waves and reflection; it was a simple and beautifully effective way of eliminating distortion. The cabinet provided the ideal conditions for the loudspeakers. It was an acoustically ‘dead’ construction, with a moulded inner cabinet surrounded by a stainless steel exterior. Whatever the dimensions of your room, and regardless of the furnishings, BeoLab Penta always sounded wonderful. It also needed very little floor space; head room was all that’s required!

BeoLab Penta was the top-of-the-line speaker from Bang & Olufsen. It was around from the late ‘eighties to the mid-1990s and was upgraded several times. The last version of the active Penta was the Penta 3. In the late 1980’s – when the Penta range was introduced – there was also a passive version, Beovox Penta. But since Bang & Olufsen decided in the 1990s just to concentrate on active speakers, these and some other models, such as the Beovox 4500 and most of the RedLine speakers, were discontinued.

Did you know that the display in Penta I and Penta II was orange and and on Penta III it turned green?

Why build amplifiers into the loudspeakers instead of keeping them separate?

Because you can reduce the size of the cabinet volume to one-third of the size of a conventional loudspeaker with the same sound capacity.

The principle is called Active Loudspeakers, and what you get is a compact loudspeaker that can play at high volume without distortion or damage to its drive units. Furthermore, when amplifier, treble and bass units are paired for the same task, they can be tailored to compensate for each other’s shortcomings. What you hear is music that sounds exactly like the instrument it originally came from.

BeoLab Penta had nine individual loudspeaker units that were accurately positioned in a vertical line to produce a sound dispersion which was so precise that reflections from the floor and ceiling were eliminated. Consequently, Penta speakers could be placed almost anywhere in a room, irrespective of its size or furnishings. The operating panel at the base of BeoLab Penta allowed for the fine tuning of the bass reproduction at three levels.

The speaker’s cross section was a pentagon. The benefit of this design was that it cannot house standing waves which normally are a problem in speakers. The choice of using polished stainless steel was made to help the speaker blend into its surroundings by reflecting them. This gave the speaker the same colour as the surroundings which helped to make the speaker more of a subtle fixture,

Sound with as many facets as a diamond

The location of the speakers within the column was carefully planned to control the sound waves so that they weren’t reflected by the floor and ceiling. The resulting sound quality simply beggared description.

BeoLab 150: Controlled overdrive

At the base of BeoLab Penta was the BeoLab 150 amplifier with a power output of 175 watts DIN/IEC. This could give your music a tremendous boost, both to the quality and the actual power output. It was ideal if you love partying but had a relatively small music system. Big power needs careful control – so the amplifier was equipped with Dynamic Soft Clipping system. When there was any overloading, the system softly rounded off the sound; distortion becoming a thing of the past.

Speakers that more than measure up

Top quality music systems need the best speakers available – or you’re missing out. BeoLab Penta was the natural partner for Bang & Olufsen’s Beosystem 5000 and Beocenter 9000, with their built in CD players. The laser-pure quality of compact disc makes heavy demands on speakers, and both these systems had extremely fine amplifiers. Using BeoLab Penta with these systems and you’d enjoy some of the best sounds in the world. You’d also appreciate handy features such as the light display at the base of the column, which indicated which music source was being used. Of course this was even more useful if you installed Beolink® to give you music all over the house.

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BeoLab 4500

Bang & Olufsen Beolab 4500

BeoLab 4500 was a wall speaker which was no more than 8cm deep. It had a built-in (active) amplifier and extended bass reproduction, which used the wall as a reflector. The display told you which source that BeoLab 4500 was reproducing at any one time.

There were two versions of this panel loudspeaker. The pure Beovox 4500 loudspeaker (shown here) and BeoLab 4500 with built-in amplifier and Dynamic Bass Equaliser (shown in main picture above), which automatically compensated for the inability of the human ear to perceive deep bass tones at low volume

The design of BeoLab 4500 and Beovox 4500 was based an acoustic principle that allowed the loudspeaker to use the wall to enhance the bass level. The cabinet let the sound waves reflect off the wall and out into the room without delay. This made it possible to reduce the depth of the cabinet to just 8cm, so the loudspeaker becomes a natural part of the wall décor.

BeoLab 4500 had a display which indicated sound source, volume and which track on CD or tape that you were listening to. In looks, it was similar to the BeoLab 5000 active speaker, but smaller. The display too was in a green-coloured LED as opposed to BeoLab 5000’s orange. Both loudspeakers were available with blue or grey fabric.

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BeoLab 3000

Bang & Olufsen Beolab 3000

Quality loudspeakers provide well-modulated sound expression, and at the same time a visual personality that also commands attention. Bang & Olufsen’s BeoLab 3000 and Beovox 3000 loudspeakers had both the voice and the looks for a leading, acoustic role. Because of their thin shape, they became known as Panel loudspeakers.

Panel loudspeakers were one of the most exciting examples of how Bang & Olufsen united advanced technology and stunning design to achieve totally new effects. They didn’t look like high specification loudspeakers,, but their sound gave them away. Even at full volume they kept the total sound picture in perfect balance.

The elegant, flat loudspeakers were designed to be hung on the wall. And with their calm surfaces of blue or grey fabric coupled with beautiful, polished steel they looked like works of art presented in their own right. The idea of the panel speakers was based upon an advanced, acoustic principle that uses the wall as an active part of the sound reproduction, without causing the wall itself to vibrate.

They were available with or without amplifier and display showing which source was playing, at what volume, and which track number on a CD or tape you were listening to.

With display and amplifier the panel, speakers were called BeoLab 3000. Without, they were known as Beovox 3000.

The options depended on which Bang & Olufsen sound system was connected. You obtained maximum utilisation from Beosystems 6500, 4500, 3500 and Beocenters 9500 and 8500.

Why build amplifiers into the loudspeakers instead of keeping them separate?

Because you can reduce the size of the cabinet volume to one-third of the size of a conventional loudspeaker with the same sound capacity.

The principle is called Active Loudspeakers, and what you get is a compact loudspeaker that can play at high volume without distortion or damage to its drive units. Furthermore, when amplifier, treble and bass units are paired for the same task, they can be tailored to compensate for each other’s shortcomings. What you hear is music that sounds exactly like the instrument it originally came from.

Mounting Options

Wall mounting brackets were supplied with this model. No other mounting solution wall offered.

Bang & Olufsen’s preferred supplier for brackets and stands, STBbrackets, have made a range of solutions specifically for this model. Distributed throughout the World by the Bang & Olufsen store network, the STB options add to the diversity of mounting options and positions available.

»Wall Mounting Brackets

Wall Bracket for BeoVox & BeoLab flat panel speaker range

WB3000 has been introduced to meet a growing demand to mount Bang & Olufsen flat panel speakers to the wall. The bracket (sold as a pair) is a faithful reproduction of the original which was supplied with the speakers. These beautiful speakers can now be installed on to the wall, where they are a genuine and authentic Bang & Olufsen statement.

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BeoLab 2500

Bang & Olufsen BeoLab 2500

BeoLab 2500 are active loudspeakers designed to match the BeoSound Ouverture and the BeoSound 3000. With their built-in amplifiers, they sound as if they’re three times their size. Hang them on the wall or place them on bookshelves.

They match both the Beocenter Ouverture and 3000 (previous to this they were used with both the BeoSound 2300 and 2500 music systems) with perspective and clarity, despite their modest dimensions. The explanation of the wide sound lies in the built-in amplifiers in each cabinet: one for bass and one for treble, so that they never have to compete for the same amplifier.

Features:

BeoLab 2500 are active loudspeakers with 2 built-in power amplifier modules to combine with the current (2002) BeoSound 3000 and BeoSound Ouverture. As speakers for the BeoSound 2300 and 2500 music systems, they were available in Blue Lapis, Black Granite, Red Garnet, Green Malachite, Yellow Dolomite and Silver Galena. However, new metal frets were introduced at the end of 2001. From the previous replaceable cloth fronts, they are now manufactured in pearlescent aluminium (see below). These new perforated metal frets presently come in 5 different colours – natural aluminium, black, blue, green and russet to match those of BeoSound 1.

“When it comes to sound reproduction we believe there’s only one relevant parameter: How close can we come to the originally recorded sound. We feel an obligation not to disturb the intentions of the artist by adding unnatural elements to the acoustic image. Therefore all Bang & Olufsen loudspeakers share the same goal. They differ in size and shape and in terms of sound pressure level. But they are all developed to reproduce the natural, unaltered sound as closely as possible ” – Bang & Olufsen catalogue 2001 – 2002

Adaptive Bass Linearisation

Adaptive Bass Linearisation (ABL) is a process patented by B&O and is incorporated in BeoLab loudspeakers. The idea is to use the surplus capacity in amplifiers and driver units, arising by normal listening levels, for a bass extension – a sound reproduction with more bass, than the loudspeaker otherwise would be able to produce.

The function is adaptive. This means that the loudspeaker adapts to the signal it receives. Loudspeaker drivers are therefore fully exploited, without suffering mechanical or electronic abuse, and the built in amplifiers are not subjected to signals would otherwise create an overload situation.

ABL gives stunning bass reproduction considering the size of the loudspeaker in which it is incorporated, under normal listening levels.

Mounting Options

BeoLab2500 were originally mounted to the HiFi with wall bracket 2087 or physically separated and mounted onto furniture as a bookshelf option.

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BeoGram CD 7000

Bang & Olufsen BeoGram CD7000

Beogram CD 7000 was distinctive because of its authentic sound reproduction as well as its large dynamic range. It was equally suitable for symphonic music and rock. Its many functions allowed you to pre-programme tracks for playback in any desired order. This CD player was the last in line as far as separates were concerned, replaced with the likes of Beocenter 2300 and Beocenter 2500.

Features:

Exclusive computer-controlled CD loading mechanism with extremely fast access time

CD tray machined from a 4mm solid aluminium plate for maximum mechanical stability and convenient loading

Disc tray cut-outs with rubber lining for 12 and 8cm discs

Spring-suspended CD mechanism and magnetic disc clamp

Special functions, such as scan and sequence programming, were carried out from Beolink 7000

Dynamic readout on Beolink 7000 of all functions, track bar, remaining time, elapsed time, scan, etc.

CD players are now among the simplest constructions in the electronic world and standard players are based on very few components, a simple electronic layout and use of economical materials, both inside the product and in the cabinet. In the construction of CD7000 the main objectives were the achievement of excellent mechanical stability, convincing sonic qualities and easy access to the CD functions.

The loading mechanism, the way the clamp function and the suspension of the CD mechanism were all points that received special attention. The high quality of the mechanical solutions was continued in the electronic circuitry and both were highly integrated and interdependent of each other.

The CD tray was very solid and elegant and the loading mechanism extremely durable. The tray was made from a 4mm thick sheet of aluminium and the conical recess for the CD was milled and diamond polished to the smallest of tolerances – to prevent dust gathering in the recess. The circular rubber profile protected the disc during loading and unloading, while the triangular cut-out facilitated unloading. To avoid static build-up the tray was connected to ground and to avoid ‘ringing’, a damping plate was placed at the innermost part of the tray, inside the cabinet.

The motorised movement of the CD tray was very fast and gentle. The movement was controlled by the microcomputer via an optocoupler and was a very stable mechanical solution with two parallel chrome plated brass rail tubes and precision plastic roller bearings. A nylon coated steel cord wire was applied for maximum duration and quiet transport. The electronically governed transport was very smooth, started the movement slowly, then speeded up very quickly, decelerating when the disc approached the clamp. Furthermore, it secured against possible damage occurring from obstacles either in front of the tray or in between tray and cabinet.

While the tray approached the clamp the disc was gently lifted off the tray and clamped between the CD mechanism and magnet. The magnet was placed on a bridge across the CD mechanism and when it engaged the disc the magnet was lifted away from the bridge. While the disc was rotating, the magnet was not in contact with the cabinet, but only the disc and CD mechanism.

This assembly was insulated very efficiently from the cabinet to prevent vibrations from the outside. A special suspension was designed, with 4 steel springs, encased in rubber. The springs ensured that the CD mechanism was fixed in the horizontal plane (i.e. across the disc), while a certain amount of movement was allowed in the vertical plane (i.e. up and down). Test showed that the servo system counteracts movements in the vertical plane better than in the horizontal plane, and the suspension thus was a good compromise with regard to immunity from external vibrations. The inherent frequency of the suspension was placed at 25 Hz to avoid tracking and focusing errors, which were prone to emerge if the CD mechanism was subjected to vibrations around 100 Hz and upward. Furthermore, at this frequency interference with the inherent frequency of the CD cabinet was also avoided.

The electronics

The CD format is one of the most precisely defined audio formats, but it is still possible to design differentiated products. The electronic solutions in CD 7000 were just as elaborate, the computer controlled loading just being one of the elements. Separate power supplies were available for the digital and analogue parts, and in connection with a careful print layout Bang & Olufsen achieved the most respectable electronic specifications. The digital-to-analogue filtering was special as well. First, a standard digital filtering (4 x oversampling) was applied to filter away the sidebands below 176,4 kHz. The analogue filtering at 176,4 kHz was carried out by a modified order filter. To avoid remnants of the 176,4kHz sideband having an effect on the filtering, a special suction circuit cut off the frequencies above 156,4 kHz. The modified filter was known as a ‘Bessel elliptical filter’. It had a very gentle filter characteristic and was not susceptible to ripple phenomena, phase distortion or ageing.

The functions

As with the other sources, operation was via the Beolink 7000, with full display readout of all functions. Special functions available included: the space function, where a pause of 4 seconds was added between tracks to facilitate track search on a tape recorded from CD 7000. Scan gave playback of the first 15 seconds of each track and was especially useful in connection with a sequence programming.

While you were scanning the CD, tracks could either be selected (compiled) or omitted and when the last track had been scanned, playback of the programmed sequence commenced. Sequence programming could also be carried out independently of the scan function and if you used the select programming, playback could be non-chronological. If you used the reject programming to leave out specific tracks, playback would be chronological.

Beogram 7000 could, ideally, be used as part of Beosystem 7000

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BeoGram CD 4500

Bang & Olufsen BeoGram CD4500

The sound reproduction achieved by Bang & Olufsen’s CD 4500 CD player was truly outstanding.

It played both 12cm and 8cm compact discs and had an ingenious ‘step’ function which allowed you to go straight to a chosen track selected from anywhere on the disc. The CD player was one of the most technologically-advanced pieces of hi-fi on the market at the time and yet was one of the easiest to operate. The explicit display always indicated what the CD player was doing all the time – for example, which track was being played, and how many tracks there were on the played compact disc.

Beogram CD 4500 could be used as part of the Beosystem 4500 hi-fi system.

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BeoGram 7000

Bang & Olufsen BeoGram 7000

Like many Bang & Olufsen turntables, Beogram 7000 was designed with a tangential arm, which ensured optimal playing of the record. It also came equipped with the patented OPP system (Optimal Pivot Point), so that the pick-up – MMC2 – was not disturbed by vibrations.

  • Fully automatic and remote controlled via Beolink 7000
  • Integrated MMC 2 pickup cartridge
  • Tangential tonearm with OPP (Optimum Pivot Point)
  • Pendulum suspended sub-chassis
  • Built-in RIAA amplifier

By the mid-1990s the CD had rapidly become a replacement for the black vinyl record with many new albums released only in the CD format. This is why Bang & Olufsen ceased production of its record decks, with Beogram 7000 being the last in a very long line of high quality turntables. However, even today the vinyl format is alive, as so many treasured record collections were originally based on the vinyl format in its heyday, with many more of the more esoteric albums still awaiting CD reissue. The requirements that have to be met by a record player have become threefold:

“The preservation of precious vinyl records in as perfect a condition as possible

The ability to pick up information from the grooves and reproduce them faithfully

The operation must be made as similar to the other sources in a system as possible.”

Beogram 7000 met and exceeded all these requirements. The MMC2 pick-up cartridge weighed only 1,6g – the lowest own weight of any pick-up cartridge – and had a very high compliance and low effective tip mass. The result was a very good tracking ability with little record wear and in combination with the contact line nude diamond the optimal contact with the groove walls was ensured – to pick up the full music information. The MMC principle – Moving Micro Cross – gave a high channel separation, especially in the bass range, a low distortion and very little channel difference, which are all elements that significantly contribute to the achieved sound quality.

The MMC cartridge was mounted in a tangential tonearm, which eliminated tracking errors. The unique Optimum Pivot Point and the pendulum suspended sub-chassis made the reproduction virtually immune to vibrations from the outside.

The tonearm’s axis for horizontal movement was positioned behind the vertical axis and thus behind the tonearm’s centre of gravity. If the pivot point for horizontal movements vibrated, the rear part of the arm with the counterweight also vibrated, whereas the stylus remained still, because it was in the centre of the vibrations. The MMC was completely integrated with the tonearm and the low weight of the cartridge meant that the tonearm resonance could be optimised to the ideal value of 10 – 15Hz.

The pendulum suspension efficiently insulated the inner chassis with tonearm and platter from the outer cabinet to prevent vibrations to affect playback. The suspension consisted of three pendulums and leafsprings and gave the inner chassis an inherent resonance of 5 – 6 Hz.

Operation of Beogram 7000 was via Beolink 7000. The turntable automatically determined record size and selected playback speed accordingly (33 or 45 rpm.). If no record was registered, playback did not begin. It was only possible to lower the pick-up cartridge if there was a record on the platter. When you operated Beogram 7000 from Beolink 7000 you could not by accident lower the stylus outside of the record surface. By preventing unauthorised operation of Beogram 7000, Bang & Olufsen gave priority to both the preservation of the pick-up cartridge and the vinyl records.

Beogram 7000 could ideally, be used as part of Beosystem 7000

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BeoGram 9500

Bang & Olufsen BeoGram 3404

In design, technology and operating philosophy, the Beogram 9500 turntable was a perfect match for the Beocenter 9500 system.

Using a light-weight MMC2 cartridge, its electronic tangential arm played each record at the exact angle it was cut giving the most precise reading of the grooves ensuring that every nuance of a recording was captured.

The arm was suspended by a patented Bang & Olufsen system which helped prevent vibrations from any source reaching the cartridge. And the chassis suspension acted as an effective buffer against external vibrations.