JBL crossover 3172 - schematic available?

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Have you checked over at the Lansing Heritage website?

See here: www.audioheritage.org/intro.htm

See also: JBL Professional

Is this a current production model?

Yes, I checked audioheritage and JBLpro.
I think it is a current production; although some parts of the 5000 series cinema system are indicated by JBLpro as "vintage" (especially the 2490 driver and 2392 large format horn), the various cinema systems using these components are still on the page of currently produced systems.
 
You might be able to get the schematic directly from JBL service department, but that is probably a long shot.. If you have a set of these speakers they are more likely to help you.. Someone at Lansing Heritage might have an in with the right people at JBL as well..
 
Attached is all the information JBL has!

The crossover was only used in a spin off model. There is no schematic, the number is just skipped over. I suspect the crossover was not built by JBL.

ES
 

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