Yeah I've seen where some designs have sleeves, but for me its pretty difficult to understand teh basic construction as I have only seen grado's online, I have never found them to look at physically.
I know I need a lip for the foam pad, but I have not been able to find any dimensions for this, the cup internal diameter I was going to take from the porta pro drivers, the depth of the cups I figured would be between 1 1/2 to 2 inches, what would be a great help to me would be an idea of the wall thickness, and the gimble diameter... to be honest the more information the better!
From what I read he higher end grados avoid resonance in the aluminium cups because of their size, if I could get an idea of what size this is that would be great, I only intend to use these at home with my starving student amp (in progress)!
Thanks
Chris,