Remember folks, 909 came along nearly a full decade after the 902/908 and while Altec existed under an entirely new and different corporate umbrella.

Things were getting cheap, look at the cheesy push on terminals, little or no protective plating on the steel parts, no more rich looking gold colored foilcal. Looks right on par with 416-8C from the same time period, worst they ever made. EEEEEEEEEEEEEWWWWWWWWWWWWW!!!!!!!

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I wonder who has all the original manufacturing prints for these?
Since they were a product of OKC, there's a chance that those drawings could actually surface someday.

It's my understanding that when the final move from Anaheim to OKC(circa 1983ish) was made, thousands of original documents, drawings, and data were hauled to a local landfill and burned.