I'm almost certain they would be 12-75's right? I found a 1960A 412 circa 87-88 (acording to the seller) for cheapy cheapy nearby. The owner bought it used in 1989, but said it was practicaly mint when he got it. Worst case scenario it has the original 75's, best case scenario it's an earlier piece with 65's :AOK BTW I'm getting the cab for $220usd with minor battle scars. I can't talk the guy into removing the back cover to check for sure -he seems pretty honest but not really tech savy and doesn't want to open it up (I don't think he has a drill and the idea of taking out 40+ screws by hand isn't to apealing). I'm picking it up in person, so maybe I'll take along my cordless and check it out then. I have lot's of speakers laying around that need a home -I doubt I could find an empty one for that price.