JBL Olympus C-50 loudspeakers

One of the best older JBL’s, love them and they will hold there own even today. Here’s a link to the back, back of jbl c50 - Google Search. Use good quality speaker wire, you will benefit. Use the lower connectors in the back, connect to your amplifier outputs as mentioned above, use the one labeled "input" connectors. The upper ones are used for bi-amping only. Enjoy!

My Dad got these while on Wake Island in 1961 or 62. He has a Marantz Model 7 amplifier and a letter from Marantz dated April 26 1962 that told him he was too isolated from the rest of the world and they would send complete details as well as the materials necessary for conversion to Model 9. The C-50 has one woofer. I don't know how to hook up the Marantz either. I have them playing through a receiver right now set to radio. I have an extra turntable I can hook up to see how well they sound.

@eltabor,
See the links below:

http://www.lansingheritage.org/html/jbl/specs/home-speakers/1973-c50-c60.htm

http://www.audioheritage.org/vbulletin/showthread.php?28611-JBL-4435-by-Guido=

You apparently have a Marantz 8B tube amp. You will need a preamp to connect from your music source to the Marantz. The Marantz 7 was a preamp - not capable of driving a pair of speakers!