Looks like it's one of these: Technics SB-EH770/780 or Technics SB-DV250/280. Can't tell which one exactly as their only difference was that the 770/250 have bluish-steel coloured plastic holding the Technics badge on the speaker covers whilst the 780/280 have a more yellowy-aluminium colour plastic. Although be warned: they are bi-amp speakers. The 770 and 250 are the same as well as the 780 and 280 are the same; Only difference is their model number.
