Freesey,
Sirquack is correct, but I'm not sure I could find the article (it's somewhere on our site). If you have a room the size of a typical cinema and you are willing to use about 8 or 10 direct-radiating surrounds lining the side and back walls, great.
But in much smaller spaces like domestic living rooms or home theaters, the use of multipolar (or bipolar) surrounds like the QS8s better mimics the wash of envelopment that you experience in big movie theaters. And the QS8s (or QS4s) retain directional acuity as well.
That's why Dolby Labs uses multipolar surrounds in its New York listening theater, which I've gone to on several occasions. It is much smaller than a commercial cinema but larger than many home theaters.
Regards,
