JBL C51 Apollo info

[Puddintane]

I've done a little researching, and it appears that dating JBL products is not that easy. Am I correct? I found a pair of C51 Apollos with LX5 crossovers and L91 horns (not sure about the woofers--haven't opened them up yet to see the backs). But they're sequential serial numbers on the cabs and appear to be in fine, original condition. Any suggestions on how to at least estimate a date, and is there any literature that might tell me some more about them (not sure where to look because I'm not sure of their approx. date)? Thanks for any and all help.

[Audiobeer]

There is a thread around here that has been used to store all the sequential serial numbers on the drivers. Someone may chime in. I put my C-51 numbers there for mine. I'll try to hunt it down.

[Audiobeer]

http://www.audioheritage.org/vbulletin/showthread.php?18239-For-Sale-JBL-C51-Apollo-speakers/page3&highlight=apollo These were mine from 1971 - 1972

[Audiobeer]

http://www.audioheritage.org/vbulletin/showthread.php?1723-JBL-numbering-database-an-idea&p=15096#post15096

The administrator on this thread is a great resource an all around great guy. He may be able to nail it down for you but be patient. He's a busy guy!