JBL Olympus C-50 loudspeakers

There is a plug built in to the Solid State Energy Transducer. Dad wanted to exchange the marantz model 7 for the model 9. Being on Wake Island made that cost prohibitive for Marantz. They supplied every thing needed for the conversion, but I don't know if he did. I'm trying to find out if everything is functioning properly so I can try to sell all of this. I don't have room for them and I don't want to put them in storage.

@eltabor,
Do the back of the JBL's look like the link below? Mike

https://worldradiohistory.com/hd2/IDX-Audio/Archive-Stereo-Review-IDX/IDX/60s/HiFi-Stereo-Review-196...

that photo is the solid state transducer. I have all the manuals and catalogs from the time period. It's the S8 speaker configuration.

Thank you all. I am confused is why I am confusing you all. The transducer hook up needs clarification and since there is only one component I assume he did the model 9 conversion, but how do I know? I would like to add photos but don't know how.

This came from imhifiman;  Go to Virtual Systems page, use the "Create System" to upload photos.

https://systems.audiogon.com/