Room acoustics

I'm looking over th dynamics of my listening space. It's a condo with large living room 20x20, continuous with kitchen and dining room for a total of 20x45. To say the least it's acoustically challenged. Our decorating will pretty much stay the same so no big heavy drapes. So, with an emphasis on turning any skepticism ( legitimate ) my wife may have of turning our present living space of echos into one of really satisfying, beautiful sound, what can anyone say about DIK acoustic products. I've read some great reviews but would enjoy hearing from the community. Thanks.