If there is an echo in the room when you clap your hands, you will have an echo with any speaker you select. Your choices are, to live with an echo (i.e., bad sound), change the acoustics of the space (a rug on the floor is an excellent idea, as are tapestries or paintings on the walls), or use a different space. There are no magic speakers that change the acoustics of the space you have, so if you have bad acoustics, no speaker on earth will fix the problem.