Hi, I am trying to find what is the truth as to what drivers are used in the KLH model #12's? I have a one set that has been rebuilt, And sound GREAT. A second set I just found for next to nothing, One of the woofers has been replaced with a newer 12 inch KLH driver. So now I am looking for a #12 woofer. I have people that say the drivers are the same as the #5, I have also other people that say the #5 and #12 are not interchangeable? After looking at the drivers I found that the tweeters for the #12 have M12 stamped in the front of the basket, Need to look close but they are on the model#12 tweeters the model #5 tweeters are not marked. The mids look the same on the #12 and #5. The woofers look the same except the ones in the model#12 are marked with a 12 and 24.6 or 26.6 in marker on the cone, The model #5 has no marks on them.