No, I think he's just had his bubble burst. I think GPA goes by late specs for the drivers. Altec (and EV?) had already combined cone kits into fewer part numbers I beleive. So he's right in that GPA stuff may not be exact especially when earlier drivers are concerned.
I think he may not realize that some things just may not be available anymore that would provide the exact same look.
His statement that since the paper looks different that the voice coil is different makes no sense, Though.




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