Vandersteen's on wall speaker, the VSM-1 requires little space and although designed for HT use, would be great for your purpose.
I have a Vandersteen dialogue channel between a pair of Soundlab Ultimate Ones and continue to be amazed at it's ability to perform for HT application.
http://www.vandersteen.com/pages/vandersteen_home_theater.htm
I have a Vandersteen dialogue channel between a pair of Soundlab Ultimate Ones and continue to be amazed at it's ability to perform for HT application.
http://www.vandersteen.com/pages/vandersteen_home_theater.htm