The fact that the Beocord 1100 was equipped with Dolby B Noise Reduction system immediately placed it among the market’s better cassette decks (catalogue 1977 / 78).
It had all the facilities you needed for recording compact cassettes and replaying them through an existing amplifier system. The combined record/playback head was made of Super Permalloy, an extremely durable material which ensured a long useful lifetime and had excellent magnetic properties. Other refinements included an electronic auto stop at end-of-tape and a switch for selecting between chromium dioxide and normal (ferric oxide) tapes.
The setting of correct recording levels was by way of individual controls used in conjunction with VU meters for left and right channels. Beocord 1101 was technically identical to Beocord 1100 but had a different exterior finish.
The Beovox 1001 was a very similar loudspeaker to the Beovox 1200 (Beosystem 1200 version), but to match the new black finish of the Beomaster 1001 the metal grille was made black.
Sadly, the designers did not take the opportunity to fit a dome tweeter (as fitted to every other Beovox loudspeaker of the period), so the original (and outmoded) 2.5” cone type remained. As the Beomaster 1001 offered the facility of Ambiophonic stereo, 4 Beovox 1001s could be connected, and the model was also suggested for use with the Beogram 1500-1 record player.
Beovox 5700 high fidelity loudspeaker was of studio monitor quality with minimum distortion and maximum power handling capacity.
The loudspeaker was designed to handle 60 watts RMS or 100 watts music power with a distortion of less than 1% over the entire frequency range of 25-20,000 Hz. In order to produce these qualities, Beovox 5700 was fitted with a 25cm ABR (Auxiliary Bass Radiator) unit and a 25cm bass unit which together produced a clear powerful bass reproduction. Its mid-range dome was 5,5cm in diameter and its dome tweeter was 2cm. Dispersion was 160 degrees.
Trumpet stand
Owing to its size, Beovox 5700 could be preferably used as floor-standing speakers. For this reason Bang & Olufsen designed the trumpet stand, type 8906007. This stand had a top on which the loudspeaker could be placed, not only elegantly, but also practically so that a good sound dispersion could be achieved.
Beovox 5700 could be used with Beosystem 4000, an uncompromising stereo system, top of its range in the mid-1970s.
Beovox 3702 Type 6244 was a high-fidelity pressure chamber loudspeaker with high specifications and intermediate power handling capacity.
It was a three-unit loudspeaker system, which means that the entire frequency range was covered by three separate units: bass, mid-range and tweeter or treble unit. Its frequency range was 40-20 000 Hz and it had a power handling capacity of up to 40 watts RMS or 75 watts music. Distortion was lower than 1% over the entire range.
The bass unit had a 20cm diameter speaker, the mid-range 8cm, the tweeter 2,5cm. Beovox 3702 met DIN high-fidelity norms.
Beovox 5700 high fidelity loudspeaker was of studio monitor quality with minimum distortion and maximum power handling capacity.
The loudspeaker was designed to handle 60 watts RMS or 100 watts music power with a distortion of less than 1% over the entire frequency range of 25-20,000 Hz. In order to produce these qualities, Beovox 5700 was fitted with a 25cm ABR (Auxiliary Bass Radiator) unit and a 25cm bass unit which together produced a clear powerful bass reproduction. Its mid-range dome was 5,5cm in diameter and its dome tweeter was 2cm. Dispersion was 160 degrees.
Trumpet stand
Owing to its size, Beovox 5700 could be preferably used as floor-standing speakers. For this reason Bang & Olufsen designed the trumpet stand, type 8906007. This stand had a top on which the loudspeaker could be placed, not only elegantly, but also practically so that a good sound dispersion could be achieved.
Beovox 5700 could be used with Beosystem 4000, an uncompromising stereo system, top of its range in the mid-1970s.
Beovox 2702 was a high-fidelity pressure chamber speaker in which good sound quality and discreet external appearance were skilfully combined. Frequency range 45-20.000 Hz, power handling capacity up to 25 watts RMS or 45 watts music. The bass unit has a 17,5cm diameter and the tweeter, 4cm.
Beovox 2702 met DIN high fidelity norms. The speakers were recommended as side speakers for ambio reproduction with Beosystem 4000.
A combination system with the quality and specifications of “separates”
Beocenter 3500 was built upon the Beomaster 3000 and combined a top quality FM tuner, an automatic record-player and a powerful stereo amplifier. The tuner had six pre-set stations for instant selection, plus a large manual tuning scale. There was an illuminated tuning indicator and a signal-strength meter to assist easy, accurate tuning. The powerful amplifier produced 2 x 40 watts RMS of high-fidelity output and was equipped with switchable filters.
There was a comprehensive range of connection facilities including sockets for two pairs of loudspeakers, headphones and a tape recorder with monitoring. The record-layer was fully automatic with one master-control for operating all functions. You only have to select the control position applicable to the size of the record, and touch a button. Beocenter 3500 was an ideal, simple way of enjoying high quality sound from records and radio. It was fitted with a robust hinged dust cover which protects records during play.
Features:
In the high-fidelity amplifier section, emphasis was placed on specifications, frequency correction and connection facilities. The LOUDNESS feature permitted switching between an objective or a subjective linear reproduction and the LOW and I-II filter controls gave a sharper regulation of frequencies in addition to the normal bass and treble controls. The LOW filter helped reduce rumble resulting from poor records. The EH filter reduced hiss. There were sockets and push buttons for two pairs of loudspeakers. The headphone socket was on the receiver’s front. The tape connection facilitated AB monitoring. All input signals could be adjusted at the receiver’s base to give equal sound intensity on all programme sources. The FM section had six pre-set FM station selectors.
A light indicator assisted accurate tuning and an illuminated meter registered the signal strength of a station. The FM section was extremely sensitive (better than 1.4 uV I.E.C.) and harmonic distortion was a mere 0.4%. Field effect transistors, ceramic filters and integrated circuits were used. The built-in record-player was perfectly matched to the rest of the unit, from a specification point of view. The fitted pickup cartridge, the SP 10A (later SP 12A) had a spherical naked diamond and a stylus pressure of 1.2 grams. Frequency range was 20 – 25000 Hz ± 3 dB and distortion was lower than 1%. Wow and flutter was less than 0.09% and rumble was better than 60 dB.
The record player section was easy to operate: you simply selected the size of the record you intend to play – 7″, 10″ or 12″ – and press a button. The record-player automatically selected the correct speed – 33 or 45 rpm – and lowered the pick-up into the first groove. When the record ended, the pick-up arm returned to its resting place and the turntable switched off. The turntable and pick-up arm had a pendulum suspension which made the record-player section insensitive to vibrations. Deep furrows in the turntable made it easy to pick up records. A stroboscope and a spindle adaptor for centreless records was provided. Beocenter 3500 was fitted with a hinged dust lid which was easily removed by a sliding action.
Beocenter 3500 had an extra Phono input. This was a ‘hang over’ from the Beomasters of the time which allowed two Beograms to be connected to the music centre. However, Phono 2 needed an RIAA pre-amplifier as it required a line level input. This feature became ‘Tape 2’ in later models.
Beocenter 4600 was a multi-way combination unit incorporating a 2 x 25 watts RMS AM/FM receiver, an easy to use hi-fi cassette deck and an automatic record player. The lightweight arm had built-in bias compensation and carried Bang & Olufsen’s MMC 20S pickup cartridge with spherical diamond stylus.
The AM radio covered long and medium wavebands. Outstanding reception quality and high selectivity was secured by an Automatic Gain Control circuit, active noise suppression and hybrid filters.
The FM tuner was highly sensitive. Four stations could be pre-set for subsequent instant recall. The hi-fi cassette deck had all the features and qualities normally expected only in a separate deck:
* 3-digit counter with memory function
* electronic tape stop at end of play
* Dolby B Noise Reduction
* chrome or normal tapes could be used
The super Permalloy tape head was hard-wearing and had a long, useful lifetime. The record player too was automated: all functions were controlled by a single button. The anti-skating device worked automatically too. Bang & Olufsen’s MMC 20 S pickup cartridge with a spherical diamond was an integral part of this unit. Two Beovox S40 speakers complete this system if this was your choice.
