I just purchased a set of SDA-2's. these dont have a letter designation, so im assuming these are the first generation. they are the ones with 3 midbass, and 2 tweeters side by side. i was under the impression that the stereo dimensional array drivers only worked when the interconnect cable was used between the two speakers. i didnt have the original cable,(these are the blade to blade) but searched the forums, and was able to create my own cable. i thought everything was ok, as all the drivers seamed to be working. but as i listened to them, i just wasnt getting the spacial sound that everyone here says they have. so as an experiment, i disconnected my interconnect cable, and noticed that all the drivers, including the "sda" array was still functioning. i took alook at the crossover schematic thats posted in the forum for the sda-2. and it appears that the "sda" array should only be functioning with the interconnect cable connected. is this correct? should all drivers be working, even though the interconnect is not in play? i have not opened the speakers up yet, since i thought everything was ok. could someone have modified something, to make all the drivers work, with out the interconnect? if so, what might have been done, so i can open up the cabnet and see what would need to be changed to put them back to there original state. i have not owned a set of "sda's" untill now, all though i have several polk models in my collection. ive heard that some people do not like the "sda" effect, and im just currious, if they could have been modified to remove the effect, all though im not sure why, isnt that the whole reason for owning the sda in the first place???