hifi engine

Kenwood KL-777z and KL-888z Speakers Owner Manuals?

Just Inherited 2 ea. of Kenwoods KL-777z and KL-888z Speakers. Looking for manuals, schematics etc. PDF links okay. want to get them tested and serviced and would like to have ammo in hand. Thanks for any help.
Also got a pristine KR-10000 Model Eleven (Super) not sure which one it's still in wrapping.