I would not use aftermarket recones or diaphagms for Altec or JBLs for obvious reasons. Yes, I consider the GPA recones and diaphragms = OEM. There are fewer and fewer JBL recone kits availible now, so this is not even an option anymore for many of the JBL vintage line.

Just for kicks, what does a new 416 woofer from GPA cost? How about a 902 HF driver?

My functional currency is USD.

Thx....