69 Twin Reverb - Needs some guidance on speaker fasteners
I am fixing a 1969 Twin Reverb for a friend.
I had a few issues - reverb out, two prong power cord complete with death cap, slight hum.
But the main problem is one of the JBLs - its dead.
This amp has JBLs so the dead one needs to be re-coned - but I can't get it off!!
When I go to unscrew the nuts, the screw stud just spins!
These JBLs seem to have been previously re-coned (masking tape with writing shows they were UPS shipped to a speaker repair place in New York).
Also, a few of the screws seen to be chopped off right at the surface of the nut.
The amp seems to have the original grill cloth nicely stretched and also has the aluminum drip edge.
I don't really want to try and remove the grill cloth.
So I want to know if anyone has come across this before and how it was solved.