According to the manufacturer Teenage Engineering, the original OD-11 speaker was hot stuff in Sweden in the 1970s. The OD-11 was a cube which packed an amp, subwoofer and speaker into one box, and it ...

Swedish singer's Bjorn Ulvaeus, left, and Anni-Frid Lyngstad, of the pop group ABBA, pose on the red carpet ahead of the band's International anniversary party at the Tate Modern in central London, ...