BEOLAB 4000 + Wall-brackets In very rare Black colour The BeoLab 4000 was a compact active loudspeaker housed in an unusually shaped cabinet and available in a wide range of colours. The cabinet had the section of an ellipse with pointed ends, frequently described as “leaf shaped”. There were no particular acoustic advantages to this design for such a small unit, other than that it allowed a reasonably large volume to be enclosed whilst still looking elegant and interesting, reason enough for a loudspeaker in this class. The cabinet was of moulded resin and clad in aluminium, making for an accurate, rigid structure. A shaped cloth grille in a colour matching the metalwork completed the exterior. The design principle was bass reflex and two drivers were fitted, a 4.5” woofer with a rubber roll edge and a 0.75” dome tweeter. The electronics followed the familiar Beolab pattern of having two power amplifiers driven by an electronic crossover network. Adaptive Bass Linearisation, a form of tuned “loudness” control, was applied to correct the shortcomings of the small cabinet and drivers, along with the ear’s own deficiencies at low listening levels. Note that there are a few little bumbs and scratches on the top of the speakers, also there are some tiny holes in the speaker cover TYPE: 6636 Product Specifications: Specifications: Dimensions W x H x D - 28 x 32 x 13 cm Weight: 6 kg Connections: Connections: Power Link 2 Phono (line) 1