BeoGram 3400 Record Deck

Large photo

Manufactured: 1975 - 1977
Designer: Jacob Jensen
Colours: Rosewood, Teak, White, Oak

Beogram 3400 was designed to play back quadraphonic-encoded records and incorporated an MMC 5000 with a Shibita diamond stylus. An optional CD4 decoder could be specified to allow play back of that type of LP as well SQ discs which could be played by any record player.

Quadraphonic sound

Bang & Olufsen produced two quadraphonic systems in the 1970s. The top model was Beosystem 6000 which comprised Beomaster 6000 and Beogram 6000. Beogram 6000 was a development of Beogram 4000 in that it was a tangential tracking turntable. It had an inbuilt CD4 decoder which was switchable. When 'on' it would detect the presence of the carrier frequencies and a display would illuminate on the record deck's display as '4ch'.

The output of the Beogram was at line-level whether in 2- or 4-channel mode. The deck was attached to Beomaster 6000 via a 5-pin DIN lead with all the pins being wired. In Beomaster 6000 there was a replaceable board with a SQ decoder as standard. This was manually switchable. The operator therefore still needed to know the type of quad recording that was to be played. The purpose of the removable board was to allow upgrading should the record industry ever get its act together and find a common standard!

The second system was based on Beomaster 3400 and Beogram 3400 which had a radial deck and a smaller and simpler receiver. This again had similar functions. Beomaster 4000 and a few others had a facility called Ambiophonics which used a system of simulated four track sound from stereo records. Two Bang & Olufsen cartridges were made for playing CD4 records:

MMC5000 used a fairly standard Shibata profile

The top of the range MMC6000 used a profile designed by one of their own engineers - Subir Pramanik - and which bore his name

Mounting Options

Bang & Olufsen's preferred supplier for brackets and stands, STBbrackets, have made a wall mount solution as a general option for Bang & Olufsen Turntables. Distributed throughout the World by the Bang & Olufsen store network, the STB option adds to the diversity of mounting options and positions available.

»Wall Mounting Bracket

Wall Bracket / Shelf for BeoGram

A universal shelf that will support all Bang & Olufsen turntables from the past 30 years. Including three cable entry points to allow you to bring cables from below the shelf or through the wall.

BeoGram 3400 Record Deck Product Specifications

5703 (1975 - June 1977)

Sound system CD - 4, stereo, matrix
Speeds: 33 - 45 rpm
Tonearm: radial
Pick-up cartridge: MMC 5000
Recommended stylus pressure: 1g
Stylus Shibita Diamond
Radius of curvature CD-4 quadro
Frequency range 20 - 15,000 Hz +/- 2 d
20 - 45,000 Hz (CD-4)
Automatic pickup movement Yes
Automatic speed selection Yes

Wow and flutter DIN: < +/- 0.07 %
Rumble DIN unweighted > 42 dB
Rumble DIN weighted > 62 dB

Speed deviation < 0.1 %
Speed control range > 3 %
Dial for speed Stroboscope 120mm
Output: 2 x 0.6 mV
Stylus pressure range: 0 - 2.5 g
Tracking error < 0.126 / cm°
Lift system: mechanical
Antiskating Inclined channelling inside bearing
Motor: asynchronous
Drive system: Idler wheel and belt
Turntable 30cm / 1 kg

Power supply: 110 - 220 V
Power consumption: 10 W
Dimensions W x H x D: 44 x 9 x 33cm
Weight 6 kg

Related Products

Created: 29th November 2006
Modified: 19th September 2012

Author Notes:

Q.13 Styled before its time and only one Norwegian captive known. And one more in Struer?

My BeoWorld



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