"What affordable (Under 15K) speakers fit this description"
A lot, or none, depending on your competence in proper set up and choice of electronics and sources.
All it requires is a bit of knowledge, some money, and a lot of patience and flexibility (spacially and mentally).
Buying speakers which can 'disappear' is easy, but getting them to 'disappear' and produce holographic images is the real trick. See the thread re Holographic Imaging posted by Dazzdax.
A lot, or none, depending on your competence in proper set up and choice of electronics and sources.
All it requires is a bit of knowledge, some money, and a lot of patience and flexibility (spacially and mentally).
Buying speakers which can 'disappear' is easy, but getting them to 'disappear' and produce holographic images is the real trick. See the thread re Holographic Imaging posted by Dazzdax.