JBL L-300 Summit Are they still any good?

If the 077 prism tweeters have the blue ring diaphragms, they sound better than the newer gold ring diaphragms and you simply cannot find the blue ring diaphragms as replacements. I've been watching for 10+ years and only saw one on ebay and missed it. I have one in case of a failure!

Thanks for your information pulled the other speaker apart today. Just fired them up! For old cap’s they still sound good. I have done a lot of business with Madisound with all my L-100 restorations. I still have a ton of the LE 5-2, mid
LE 25-1 tweets and 8 123A-1 and -3 woofers. I need to start unloading the extra parts. I watched a interview with Nelson Pass he said he may have improved the L 300 crossovers a bit but still felt  JBL did an excellent job on the configuration.

Yes JBL was one of the top back then, older ones, 60/70. I'm sure the caps are still good enough. As you know, they have made some improvements in capacitors since these were made. Could have already been upgraded I suppose.

@iconicaudio,
You might want to check out the Lansing HERITAGE site you will get more info on all things, JBL and ALTEC. Yes, they are good. Mike

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

Lansing Heritage has a wealth of knowledge. I am just so busy listening I haven’t had time to even go on the site. I bought these at an estate sale from the original owner. I am not quite sure how common consecutive serial numbers are with the L 300 but these are consecutive serial numbered.All the drivers and components inside are very close in serial number.
The cabinets are in pristine condition not a mark on them.