FWIW, translation: 4647=4507cab+2226H bass driver, maybe 2225H if older.
Have to read this off the back of the driver magnet assembly, not the box.
I'd personally suggest a higher xover than the 3115 provides with that
horn, and the -A suffix units have the CD compensation. The 3110 vs 3115
thing is just my preference and experience.
Worth a read of this thread:
http://www.audioheritage.org/vbullet...ead.php?t=7480
4673 was a JBL theater system (same components with 3115A).
Might have a google search on that system...