Took a shitload of pictures and when the old ladys kidz come by I will let them do it . Not much on the computer..called KLIPSCH to find info , must have pequened someones interest because two people from klipsh called PQD Jim Hunter and Steve ? they also want pictures . Jim told me that the 1/2"plywood would be correct on the top part of the speaker.To think is was about to deconstruct it and rebuild with 3/4" makes me a little Quesy!m really xcited about this find. I bought my Cornwalls from a nephew of a klipsh engineer and PK singed both of them. To have another piece of history is awsome.Will keep info coming as I get it . Thanx for the responces, is great to be able to share this find with peeps that as I say "GET IT" ! Anyone out there that thinks I should go to the casino or buy lottery tics!! LOL!!