Time to get this site upgraded, so we are passing the hat around. We appreciate any donations. Seriously, even a dollar helps. The payment page may be found here - https://www.audiokarma.org/support.html
Go to Page...
We appreciate your help
in keeping this site going.
Looks to be a 17" AA, AB, or AC chassis ( all abt the same).
They also came in 10" & 13". They sold tons of them.
Its one of the infamous griplet problem sets.
Threaded Mode