ДК was formed in 1982 in Moscow. It's name is and was by many, if not most, people believed to be taken from the abbreviation 'DK' for Soviet 'Palaces of Culture' or 'Houses of Culture'. Though this may not be true, it seems probable that the group very well understood that, using simply the abbreviation and not full words, it would often be read as that, and at least for many people associated with these places:

Read more about ДК on Last.fm.