Hi, I have had Polk SDA 1s,1Cs and 2B TLs . I recently sold the 2B TLs and for some reason a month later grabbed some beatup SDA 2s with the SL 2000s side by side I was thinking i could put the drivers in my RTA 12s. Anyway I listened to them and they sound good maybe slightly bright. but not harsh at all.. I then disconnected the outside tweere and now they sound really nice and balanced. In fact they sound alittle more full then the 2Bs did with a better midrange . Then again there are 2 stereo drivers verses 1 in the 2B
I also noticed something else. With the dimensional tweers hooked up I played the 3rd song on Jackson Brown's Running on Empty and JB is talking to a bandmate about Mozart and the band member is righ in front which is not the way any other speaker does it. He is usualy way to the right. When I disconnected the dimensional tweeters he moved out to the right like normal and yes the outside 6.5 dimensional speaker was working. I noticed the same thing on Bob Siegers last track on Against The Wind. Back up singers at the end of the song , first to the right then left then right then left. With the dimensional tweeters hoked up it did not do that.
Point is they seem to sound way better and more balanced with the outside tweeters disconnected and as a whole seem slightly more filled in in the midrange then the 2B.
Not that it really matters but did Polk ever come out and say discconnect the outside tweeters?