I don't get to review in-ceiling speakers all that often, so I jumped at the chance to take a look at Definitive Technology's latest "DI" or Disappearing In-wall series. I got hold of four DI 6.5R speakers to review. These are round in-ceiling speakers that run about $279 each. They can be used as side or rear surround speakers or to fill any room with sound. I could easily see these installed in a dining room, office or bedroom. As for me, I tested them a bit harder, using them for high-quality sound reinforcement in a classroom environment. Discuss "Definitive Technology DI 6.5R Disappearing In-ceiling Speakers Review" here. Read the article.