Should I use bipolar, dipolar, or tripolar surround speakers?
Surround speaker placement, room acoustics, and personal preference are as important as the speakers radiating characteristic. These factors vary greatly, so Dolby Laboratories cannot recommend a particular speaker for home theater use. Bipolar, dipolar, and tripolar surround speakers use speaker drivers aimed towards the front and back of the room to achieve a diffuse soundfield like that created by the multiple surround speakers used in movie theaters. Your rooms acoustics will effect these designs more than conventional direct-radiating speakers, which, when placed properly, can also make effective surround speakers.
