Need info on rare cocrete JBL enclosures

[eaglecustoms@fi]

Hello to all this is my first post -
In the mid 70's I moved a pair of 1/4 ton concrete JBL speakers for Ted Darnaude an Aerospace engineer , from his house in Palos Verdes to his home in El Segundo. These were Heavy concrete tandem vertical woofers with a flaired tweeter horn set on top . The lowers could be seperated with one speaker in each half. We hauled them and set them up in his living room. The two halves of each lower woofer cabinet just stacked together as a mirror image with the 2 big JBL woofers. Then a tweeter fit on top of each. Honest these were solid concrete speakers...Ted said he had two of a total of 4 concrete speakers that were made by JBL ,, He may still have them,
Does anyone out there know of such rare units?
Please help me confirm this story with some solid truth about why when and where they were made...
Thank you
I'm all ears

[rgrjit8]

Well, this isn't what you want, but there was a small company in Sandwich Illinois which made custom concrete enclosures. I always meant to stop in, but never did:banghead: .

I haven't seen them advertise in some time. Probably out of business.

[eaglecustoms@fi]

Thank you decibel junkie

I was told that they were Actually "made" by JBL as an experimental project, only 4 were made...

The owner worked in the advanced aerospace guidance control dept for NASA and I have reason to believe he was one man who could have procured such a sweet set of rock speakers ,

I was hoping some one AT JBL could research the validity of my claim and give me "solid" answer!
Thanks again for the lead on that factory ...
yet since this happened in L.A. I tend to assume such cabinet were more locally made...

I'm All Ears