Posted on

BeoVision 3000SJ

BeoVision 3000SJ

” Beovision 3000 Colour SJ is a colour television receiver built like a deluxe PAL receiver with a delay module for the PAL system. The receiver is compatible, which means it is capable of receiving either black-and-white or colour programmes, and the transition is automatic so that you avoid manual operation of buttons or similar controls “

In the summer of 1963, Bang & Olufsen began the development of the first colour television, with engineer Bent Moller Pedersen and an apprentice. Testing the new receivers was still a problem, because there were not many places where colour test cards could be received. It came as a relief to the technicians when, in 1966, Hamburg began to broadcast test cards.

A Bang & Olufsen colour television laboratory with three technicians was set up for a week at a pub 25 km north of Hamburg! In 1967, Bang & Olufsen began producing colour televisions – not without a certain cautious scepticism. Director Jens Christian Sonderup wrote to retailers in the summer of 1967: “At the moment, no one can say with any degree of certainty how sales of colour televisions will develop. Let us be clear about one thing, though: colour television will not be the bread and butter of the sector during the coming season… We must all hope and believe that the radio sector will prove to be a match for colour TV. in B&O circles, let us as usual err on the side of healthy development.” Weighing in at 52 kg, the Beovision 3000 Colour S.1 was an investment for the company in a market that was still feeling its way between different international standards.

The introduction of colour television brought with it some new concepts that were unknown in the days of black-and white reception: colour saturation and colour tone. The picture tube was now 63cm, but it could not be manufactured with sufficient perfection and accuracy for the three electron guns in the picture tube to line up properly on the interior of the picture tube. It was therefore necessary to make some manual adjustments (convergence adjustments) in production as well as in subsequent servicing. The set had to be adjusted at regular intervals. That had also been taken into consideration in this unit. Chief Engineer Knud Hoist and Engineer Bent Moller Pedersen wrote the following instructions with the service technicians (rather playfully) in mind: “Here is B&O’s unconventional solution on the deployment of the convergence buttons. Remove the small panel at the front of the set by lifting it with a coin. The flap can then be pushed far back enough to allow easy access to the convergence buttons while, at the same time, their effect can be seen by looking at the screen. One reason why we have done this is in order not to impose a requirement for future colour TV technicians to be born with extra-long arms!

Despite the director’s cautious scepticism, Chief Engineer Knud Hoist had no doubt that colour television was the way ahead. Speaking in a radio lecture, he said: “If we don’t open the front door to colour television by introducing a Danish colour TV, it will come in by the back door as foreign broadcasts over our borders. Continuing to exclude colour television for much longer from parts of the country that are not covered by Germany will create such a great demand backlog that both the manufacturing sector and the retail sector will both find it difficult to cope when it is finally released. It would be much more desirable to accept what is otherwise an inevitable, slow penetration of colour television into Denmark – and to act accordingly.”

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

” Its 625-line only circuitry initially made it of limited use, as BBC1 and ITV were not widely receivable on this standard, leaving BBC2 as the only viewable programme. Beovision 3000 made up for this though by offering the best quality colour picture yet seen, so good in fact that in certain areas it remained unsurpassed for years after it was withdrawn. When B&O released its first solid state colour sets in 1974, these had to be modified in the field, as their contrast levels seemed ‘washed out’ compared to the then 6 year old 3000s!

Quality was achieved at the cost of considerable complexity. It is well known that cost was not a factor in the design of the 3000, and so any extra parts or stages that could possibly up the performance were added without question. The result was a set with 18 valves, 53 transistors and 48 diodes arranged on two massive chassis. Technical highlights included decoder circuitry working at high voltage to improve colour linearity, DC controlled static convergence, apparently less susceptible to mains voltage variations, separate line scan output stage and EHT generator employing two transformers and two sets of large valves, which improved geometry and dimensional stability, an electronic EHT stabiliser which helped to ensure uniform focusing, and of course, a comprehensive audio amplifier employing three transistors, one valve and heavy negative feedback, all driving a high quality loudspeaker.

These sets demonstrated to the new British market that B&O’s televisions were every bit as good as their audio, and started a long line of development which can be directly traced to the current models. “

Posted on

BeoVision 3000KJ

BeoVision 3000KJ

” Beovision 3000 Colour SJ is a colour television receiver built like a deluxe PAL receiver with a delay module for the PAL system. The receiver is compatible, which means it is capable of receiving either black-and-white or colour programmes, and the transition is automatic so that you avoid manual operation of buttons or similar controls “

In the summer of 1963, Bang & Olufsen began the development of the first colour television, with engineer Bent Moller Pedersen and an apprentice. Testing the new receivers was still a problem, because there were not many places where colour test cards could be received. It came as a relief to the technicians when, in 1966, Hamburg began to broadcast test cards.

A Bang & Olufsen colour television laboratory with three technicians was set up for a week at a pub 25 km north of Hamburg! In 1967, Bang & Olufsen began producing colour televisions – not without a certain cautious scepticism. Director Jens Christian Sonderup wrote to retailers in the summer of 1967: “At the moment, no one can say with any degree of certainty how sales of colour televisions will develop. Let us be clear about one thing, though: colour television will not be the bread and butter of the sector during the coming season… We must all hope and believe that the radio sector will prove to be a match for colour TV. in B&O circles, let us as usual err on the side of healthy development.” Weighing in at 52 kg, the Beovision 3000 Colour S.1 was an investment for the company in a market that was still feeling its way between different international standards.

The introduction of colour television brought with it some new concepts that were unknown in the days of black-and white reception: colour saturation and colour tone. The picture tube was now 63cm, but it could not be manufactured with sufficient perfection and accuracy for the three electron guns in the picture tube to line up properly on the interior of the picture tube. It was therefore necessary to make some manual adjustments (convergence adjustments) in production as well as in subsequent servicing. The set had to be adjusted at regular intervals. That had also been taken into consideration in this unit. Chief Engineer Knud Hoist and Engineer Bent Moller Pedersen wrote the following instructions with the service technicians (rather playfully) in mind: “Here is B&O’s unconventional solution on the deployment of the convergence buttons. Remove the small panel at the front of the set by lifting it with a coin. The flap can then be pushed far back enough to allow easy access to the convergence buttons while, at the same time, their effect can be seen by looking at the screen. One reason why we have done this is in order not to impose a requirement for future colour TV technicians to be born with extra-long arms!

Despite the director’s cautious scepticism, Chief Engineer Knud Hoist had no doubt that colour television was the way ahead. Speaking in a radio lecture, he said: “If we don’t open the front door to colour television by introducing a Danish colour TV, it will come in by the back door as foreign broadcasts over our borders. Continuing to exclude colour television for much longer from parts of the country that are not covered by Germany will create such a great demand backlog that both the manufacturing sector and the retail sector will both find it difficult to cope when it is finally released. It would be much more desirable to accept what is otherwise an inevitable, slow penetration of colour television into Denmark – and to act accordingly.”

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

” Its 625-line only circuitry initially made it of limited use, as BBC1 and ITV were not widely receivable on this standard, leaving BBC2 as the only viewable programme. Beovision 3000 made up for this though by offering the best quality colour picture yet seen, so good in fact that in certain areas it remained unsurpassed for years after it was withdrawn. When B&O released its first solid state colour sets in 1974, these had to be modified in the field, as their contrast levels seemed ‘washed out’ compared to the then 6 year old 3000s!

Quality was achieved at the cost of considerable complexity. It is well known that cost was not a factor in the design of the 3000, and so any extra parts or stages that could possibly up the performance were added without question. The result was a set with 18 valves, 53 transistors and 48 diodes arranged on two massive chassis. Technical highlights included decoder circuitry working at high voltage to improve colour linearity, DC controlled static convergence, apparently less susceptible to mains voltage variations, separate line scan output stage and EHT generator employing two transformers and two sets of large valves, which improved geometry and dimensional stability, an electronic EHT stabiliser which helped to ensure uniform focusing, and of course, a comprehensive audio amplifier employing three transistors, one valve and heavy negative feedback, all driving a high quality loudspeaker.

These sets demonstrated to the new British market that B&O’s televisions were every bit as good as their audio, and started a long line of development which can be directly traced to the current models. “

Posted on

BeoVision 3602

BeoVision 3602

Like other Bang & Olufsen colour TVs, Beovision 3602 had the automatic cut-off regulating circuit which ensured natural colours throughout the set’s useful lifetime. The in-line picture tube allowed for easier and better convergence in order to avoid the usual discoloured edges – not least when viewing a black & white transmission.

Internally the Beovision 3602 was identical to the Beovision 3502 so one obtained the same outstanding picture quality and equally good sound reproduction from the large, forward-facing loudspeaker.

On the easy-touch panel one could select programmes and turn on the set in the same action. Regulators that are not used often are hidden in tow touch-release compartments – one for sound and one for video adjustments. Power consumption was exceedingly low – only 110 watts and the low heat generation made this set suitable for placing in a shelving unit.

Optional accessories: Mobile X-shaped undercarriage or trumpet-shaped stand, both in polished alloy.

Posted on

BeoVision 3702

BeoVision 3702

Beovision 3702 was a 56cm colour TV with small outer dimensions, a highly advanced construction throughout and the most logical operation facilities then on the market.

The ultrasonic remote control was designed to be operated with one hand and its most important regulators could be ‘read’ by the finger tips. These regulators – for brightness, colour saturation and sound are set in relief, so there was no need to look. The user could feel which position was which by the tactile buttons.

Any of eight pre-set stations could be called, and, by pressing the special reset facility, all adjustment levels including sound, would revert to their predetermined basic levels.

Beovision 3702 could be switched off at the main ‘off button on the set’s simple operation panel. Or one could switch it off with the remote control module in which case, the set goes into stand-by position. By pressing one of the programme selectors there is a picture on-screen within 5 seconds together with sound. The picture tube was of the in-line type which needed fewer adjustments and consumed less power – only 115 watts.

The chassis was modular and there was an automatic cut-off regulating circuit to maintain long-term colour purity. Beovision 3702 could accommodate a VCR without further technical adjustment and could be fitted with a special optional kit to reproduce sound through a hi-fi system. Two pre-stamped blanks on the set’s fascia allowed for the insertion of a headphone or extension speaker terminal and switch.

Posted on

BeoVision 3800

Beovision 3800 and 3900 were 22″ colour TV receivers finished in genuine wood veneers (teak or rosewood). They superceded models 3602 and 3702 in 1979. The sets were slim and elegant and their classic design suited any home décor according to the 1979 – 80 catalogue. High Bright picture tubes allowed for satisfactory daylight viewing since they permitted around 70% more light than from the screen than conventional picture tubes.

Beovision 3800 was for direct (set box) operation while Beovision 3900 permitted you to operate the set via an ultrasonic remote control handset. Beovision 3900 could also be supplied equipped for Teletext reception.

Automatic cut-off circuits guaranteed correct balance between the three basic colours (red, green blue) even after a long period of use. In fact, these sets incorporated every refinement which still makes Bang & Olufsen’s television sets among the market’s best. VCR programmes could be played without additional technical adjustment. There was an automatic synchronisation on all channels.

A choice of two mobile undercarriages were available. A tall undercarriage (42cm high, type 3057) depicted here, and a lower one (34cm, type 3058). Both were sold as optional accessories

Posted on

BeoVision 3900

BeoVision 3900

Beovision 3800 and 3900 were 22″ colour TV receivers finished in genuine wood veneers (teak or rosewood). They superceded models 3602 and 3702 in 1979. The sets were slim and elegant and their classic design suited any home décor according to the 1979 – 80 catalogue. High Bright picture tubes allowed for satisfactory daylight viewing since they permitted around 70% more light than from the screen than conventional picture tubes.

Beovision 3800 was for direct (set box) operation while Beovision 3900 permitted you to operate the set via an ultrasonic remote control handset. Beovision 3900 could also be supplied equipped for Teletext reception.

Automatic cut-off circuits guaranteed correct balance between the three basic colours (red, green blue) even after a long period of use. In fact, these sets incorporated every refinement which still makes Bang & Olufsen’s television sets among the market’s best. VCR programmes could be played without additional technical adjustment. There was an automatic synchronisation on all channels.

A choice of two mobile undercarriages were available. A tall undercarriage (42cm high, type 3057) depicted here, and a lower one (34cm, type 3058). Both were sold as optional accessories

Posted on

BeoVision 3300

BeoVision 3300

Beovision 3000 and 3300 had 50cm screens and were, at the time of the 1979 – 80 catalogue, Bang & Olufsen’s smallest colour TV sets. They were identical technically, except that Beovision 3300 had the ability to be controlled by remote control.

However, it was only the size of the screens and the outer dimensions of the sets that were small, according to the catalogue. Inside, the technology was on a par with B&O’s biggest models, with the same advanced circuits that made the bigger 26″ models renown for their reliability and high quality levels. In order to secure the best sound reproduction, Bang & Olufsen included a large, forward-facing pressure chamber loudspeaker and a 6,5 watts RMS hi-fi amplifier, similar to those in audio setups.

The sets’ cabinets were finished in genuine wood veneers and lived up to the tradition of excellent Danish furniture workmanship.

Posted on

BeoVision 3000

BeoVision 3000

Beovision 3000 and 3300 had 50cm screens and were, at the time of the 1979 – 80 catalogue, Bang & Olufsen’s smallest colour TV sets. They were identical technically, except that Beovision 3300 had the ability to be controlled by remote control.

However, it was only the size of the screens and the outer dimensions of the sets that were small, according to the catalogue. Inside, the technology was on a par with B&O’s biggest models, with the same advanced circuits that made the bigger 26″ models renown for their reliability and high quality levels. In order to secure the best sound reproduction, Bang & Olufsen included a large, forward-facing pressure chamber loudspeaker and a 6,5 watts RMS hi-fi amplifier, similar to those in audio setups.

The sets’ cabinets were finished in genuine wood veneers and lived up to the tradition of excellent Danish furniture workmanship.

Posted on

BeoVision 1600

BeoVision 1600

The Beovision 1600 replaced the Beovision 1400 range and included a new all-transistor chassis. As before, a 24” wide-angle tube was fitted, the largest monochrome tube that was available at the time. In contrast to the 1400 range, only one cabinet style was available, a table model, though this could be fitted with an optional pillar stand for free-standing use. The design was simple and elegant, with the minimum of cabinet work around the screen.

The controls were all of a new design, and concealed when not in use. Each one was mounted in a small latching drawer marked with a graphical symbol to represent its function. To adjust a setting (volume, brightness etc), one only had to touch the relevant drawer lightly and it would open, allowing access to an edgewise rotary control. The tuning worked in a similar manner, where the tuning controls were hidden inside the channel selector buttons. To adjust the tuning, one would press the button one wished to adjust, thus selecting the channel, then press again to slide out the drawer to reveal the tuning scale and control.

To make the most of the instant picture possibilities that the adoption of transistors (instead of the valves in previous models) offered, the heater of the picture tube of the Beovision 1600 was left energised at all times. In order to extend the life of the tube, when the set was switched “off”, the heater was run at a slightly lower level of power. Even despite this, the picture appeared truly instantly as soon as the “on” button was pressed, something that no other range of Beovision TV sets has been capable of since.

The rest of the design was quite conventional, with the exception of the voltage regulator which could tolerate a very wide range of mains voltages without picture disturbance.

The Beovision 1600 was the last large-screen monochrome Beovision model

Posted on

BeoMaster 1000

Bang & Olufsen BeoMaster 1000

Beomaster 1000 – a compact all-transistor hi-fi 2 x 15 watt stereo amplifier equipped with a highly selective FL radio with extended FM band (to 108 MHz), 3-gang tuning capacitor and 4-stage intermediate-frequency amplifier, automatic control circuit which locks on FM stations and keeps them accurately tuned.

It is prepared for single-transmitter stereo broadcasts, having a B&O multiplex adaptor (stereo decoder); it is also equipped with a pilot lamp (“Beo-Beacon”) which lights up when the receiver is tuned to a station transmitting an FM stereo programme.

The stereo amplifier, which plays both stereo and mono gramophone records, delivers no less than 2 x 15 watts of power output; piano-key speaker change-over switches which control two sets of stereo speaker systems, separate extra-efficient bass and treble controls; balance control for correct stereo sound distribution; physiologically compensated volume control (provides full balance at all volume levels throughout the tonal range); separate scratch and rumble filters; piano-key switching between mono and stereo reproduction; piano-key selectors for switching between the following types of operation: FM Broadcasting, FM Automatic Frequency Control; Tape Recorder; Gramophone 1; Gramophone 2.

Dimensions: 87mm high, 505mm wide, 24mm deep.

Choice of teak or Brazilian rosewood finish. Awarded the 1966 iF Prize for Industrial Design”