how to tell if a TAD 803 is 2005 2 way version?

"2005 produced 2-ways (last of them close out priced, now gone) have a crossover with a main driver that plays up to 3kHz - many said this speaker is too hot on top. Newer 2006 crossover-less design has a 10k main driver that is directly wired to the binding posts, plays close to flat on top."
paul

i bought a pair from a nice audiogoner who didn't realize there was an 803 and an 803sd (mine just say 803) and then i just read paul's post quoted above, so i'm wondering how i can tell what speaker it really is as i really wanted to try a single driver speaker.

as always, thanks for any help everyone