Kenwood LS-P5000D home speakers

Question

I purchased the speakers used. I'm kind of an old school guy. I like the big cabinet speakers with my old tuner and JVC turntable. anyway one speaker is complete. the other is missing the big passive radiator. i think its a passive radiator because there was no wires that are not connected to anything. also the woofer in the cabinet is not the original. Can you tell me where and if i can still get these items to replace these speaker parts. thank you.