Harman Group and JBL - Download Portal for Schematics and e-mail Address

For a long time there is no possibility to download schematics.
The previously available pdf download portals are no longer available.

Maybe someone knows the exact web address (URL) of the past - then I can try to get this in the webarchive.

This website isn't helpful:
HK service manuals available for download - AVS Forum | Home Theater Discussions And Reviews
That's because there are no more navigation buttons - go to
webarchive provides only this message:
Directory Listing Denied
This Virtual Directory does not allow contents to be listed.

And an additional question:
Who know the currently email addresses from JBL and Harman ?

Thank you very much.
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When I search for a JBL service manual I list the item and "PDF" in the search engine. That usually gets me there quickly.

It has been a few years since I have seen any updated service information. JBL used to send out discs with all of their Pro service information. As far as I know the folks who did that are no longer there.