If you go to look at them,I would appreciate your asking the current owner about their history.
That is a RWO/Fostex LS2HT. I built those 35 or so years ago.
Have you done any listening yet?
woofer and mid are OEM Pioneer
Is there a paper ring under the foam residue on the frame?
what make is the speaker?
You can make your own. Google Loctite O Ring kit. From there you may get to a cheaper alternative.
Sound Dynamics was founded by George Baker,a wild and crazy guy.
We used Audax in the 70's and 80's. They are good speakers. I still have mid diaphrams.
If you want to stiffen the paper use clear nail polish.
Did you finish your speaker system?
Another issue to consider is if you are tired. Be well rested before critical listening.
I think these were made by Huron Acoustics out of Toronto. The owner was "Fast Eddy Gretsch" He had 13 v-groovers and turned out tons of private...
Find a junked speaker remove the terminal strip and pop rivit to your frame.
Separate names with a comma.