I didn't see a dedicated "Introduce Yourself" thread, but this looked the likeliest candidate.
I have a strange history in audio. I got certified to recone/repair JBL products back in the seventies, and did that for about 25 years (in addition to Altec and EV products). I also owned a JBL Pro franachise and service center in the "Olden days" as well. Spent a lot of time in the Industrial and Sound Reinforcement areas too (and more).
I still have quite a few JBL documents relating to that time, and will get them out of storage if I can help anyone here.
This looks like a great community. I dropped in a few years ago, but didn't have time to participate then. Hope I can help now.
Fred