For my set up I dont know either to go with direct or Diople speakers.They will be placed about 2 feet above the listening position. And if you would recommend one or they other why?
One other thing I noticed looking at some of the Diople speakers that there frequencies do not cover the hole bandwidth 20-20K Hz
IMO direct speakers for in front (ie centre, left, right) and bi-pole or di-pole for surrounds.
Bi-pole is preferable if you are sitting with a wall closely behind your sitting position. Di-pole is preferable when your sitting position has some space behind it.
Some speakers such as the Polk Fxi3 surrounds i use have a switch for bi-pole or di-pole operation.