B&O Bang & Olufsen Beovox S75 Type: 6313 , 1977-1980, made in Denmark

Manufactured: 1977 - 1980
Designer: Jacob Jensen
Colours: Rosewood, Teak

The S75 was a four way speaker designed for stand mounting and was a suitable match for any of the receivers offered at the time. It could be regarded as the bigger brother of the fabled S45.2 and replaced the very similar S60 in the speaker range.

The cross over was changed along with a redesign of the cabinet. The result was a speaker with more bass emphasis than the S60 but still with a soaring top end. Criticism could be levelled that the bass was at times slightly overblown, but for rock music, it hit the spot.

The extra size also emphasised the cabinet makers' skill with the rosewood model in particular often showing a wonderful selection of flame veneer.

Although these speakers lack the accuracy of the S45.2, many will find the extra bass an attraction and will choose these in front of their fabled brother.

Beovox Uni-Phase S75

Pressure chamber speaker with linear phase sound reproduction and wide frequency range: 36 - 20000 Hz. Was suitable for placement in a shelving system but also available with aluminium pedestal for those who prefer a free-standing model. Speaker units included a 25cm woofer, a special 12,5cm Phase Link unit, a 5cm mid-range dome and a 2,5 dome tweeter. Volume was 40 litres; weight 11kg.

               The largest of the S type Uniphase speakers, and a development of Beovox S 60. In common with the rest of the Uniphase range, Beovox S 75 had an angled resin front and a fine wooden cabinet. The rear panel was vinyl covered chipboard and a high quality wooden carcass. The removable grille was plastic in construction with pegs to fit in holes on the resin front and cut outs for the drive units. It was covered in black cloth. The speakers were identical with the drive units not being mirrored. Two dome units were fitted at the top of the speaker, the smaller being a 2.5cm and the second a 5cm unit fitted in its own cylindrical tube. The phase link unit was again fitted with its own cylinder in a similar way to Beovox S 45-2. On this occasion, the phase link unit was a 12.5cm unit. The woofer was interesting as instead of the normal Peerless unit, a high quality SEAS unit was present. Connection was made by the usual recessed 2 pin DIN plug on the rear. An optional stand was available and preferable as with a frequency response down to 36HZ shelf mounting could lead to an over emphasised bass. The S 75 had the later square stands.

Beovox S 75 was designed to be used with any of the Beomasters made at this time, and in particular Beomaster 4400 with its 75W output, this being the main reason for the replacement of the very similar Beovox S 60. Beovox S 75 was replaced by Beovox S 120 in the revised Uniphase range.

Country:  Denmark
Manufacturer / Brand:  Bang & Olufsen (B&O); Struer
Year: 1977 Category: Loudspeaker, headphone or earphone
Wave bands - without
Power type and voltage No Power needed
Loudspeaker 4 Loudspeakers
Power out
Model: Beovox S 75 6313 - Bang & Olufsen B&O; Struer
Material Wooden case
Shape Book-shelf unit.
Dimensions (WHD) 320 x 590 x 250 mm / 12.6 x 23.2 x 9.8 inch
  • Pressure chamber housing
  • Housing capacity 40 liters
  • 4 speakers
  • Rated load capacity 75W
  • Impedance 4 to 8 Ohm
  • Frequency response 36 to 20000 Hz.
  • Sensitivity 5 W 
  • Gross volume 40 litre 
  • Woofer: 25cm 
  • Phase link unit: 12,5cm 
  • Mid-range unit: 5cm 
  • Tweeter:2,5cm

Net weight (2.2 lb = 1 kg) 11 kg / 24 lb 3.7 oz (24.229 lb)
Source of data -- Original-techn. papers.