In most living rooms or home cinema set-ups it is not very easy to install a rear speaker properly. In order to achieve a suitable sound feeling without being able to locate the position of the rear channel you normally use a diffusing acoustic source, like our PHASE 16. By using the switcher at the back panel you can put the speaker into 3 different sound modes.
For smaller rooms the dipole mode when the tweeter are inversely phased and serving more diffusing sound picture. In the bipolar mode both tweeters are phased and using it normal means that just one tweeter is working.