I use to own a large pair of the Polk speakers (I forget the model number). They do sound better when they interface with each other. The ends that connect into the speaker are specialized and you must purchase them in order to run a cable between the speakers. You could call the Polk service department for the necessary information.
Polk SDA Speaker info needed...
I've got some older Polk SDA 1A dimensional array speakers and people are telling me that the sound is much better when you use the cable that connects the two speakers together. Can anyone varify this and also tell me how I might hook mine up just for a listen without having the polk cable? Thanks..