Quote Originally Posted by Coendert2011 View Post
That's acoustically unloaded? And what do they look for?
I don't think unloaded, but I didn't ask. Listen for any buzzes or the cleanest tone. That's what they said. (I think I was talking to Bill). Use 3 screws just slightly snug then add the other 3.

I only have the replacement instruction using the spider shims for centering.
Yep. And to do that, you need the alignment sleeves, which I do not have. The paper shims come with the 'frams. If you don't have the alignment sleeves (or whatever they are called) then you can't hold the position of the diaphragm once it's removed to take the shim out.

Gpa siad that the jigs/shims are supplied with the new phragms.
Paper spider shims, yes. The driver is supposed to have the sleeves, mine did not.