Ok, you smart cookies, I picked up a set of full size [44" tall!] SDA's. After all the good hype I’ve read here I just had to get a set.
They came with the factory cable [pin/slot if that’s the verbiage?] plus a copy of the owner’s manual.
The manual states it’s for the SDA 1B but the enclosed pictures have the two SL2000 [tweeters] stacked one over the other and sitting on their ends BUT mine are mounted side by side and on a more normal i.e. conventional style over the four  6 1/2 woofers.
The backs reveal a little info: one speaker has the serial number missing and no other ID type markings other than ‘Right Channel’. The ‘Left Channel’ has this sticker:
SDA IA 1650
The ‘I’ looks for all the world to be an alpha character and not a numeric? Is this just a Polk Audio convention and it really is a 1 [one]? The speakers are all dated late April or early May 1985.
Also the two speakers have two types of binding posts; one being a bit shorter and gold and the other taller with tarnished steel looking metal. Obviously I’m going to change both but; is the binding post hole pretty much a standard affair and is there any type, brand or company binding post any of you guys like and could suggest to me? Anyone have some to sell, 4 posts are needed.
The speaker wire: Do the SDA’s like silver wire? I have two 10 feet runs [10ga] of wire with something like 258 strands of silver coated copper wire that I know works well with the LSi9 speakers.
I called Polk Service today and he said a very popular upgrade is the tweeters; to the RD0194-1 @ $48 each. Is this the SL2000T I hear you guys talk about?
Grill cloth, Polk said they ran out but I can check the web [like speakerworld.com]. Are there any good places I can go that you guys can suggest that carry some good stuff with reasonable shipping? Any of you guys have enough leftover from another project that you would like to sell?
Sorry to drag this so long......