After deciding to keep my L200's and pulling out the 077 tweeters from my old Jubals I am now looking for ideas on how to proceed to make some improvements to these completely stock speakers. I will very likely be using what I have, the horns and LE15B's but will be adding the super tweeters into the mix. The reason for not wanting to replace the woofers, or the horns is mostly economic but also logistics. I live pretty far out in the sticks and it has proven too difficult to get used stuff off from ebay or craigslist here. Anyway because of this I am likely going to go with the drivers I have now which all are in good condition and sound great. Here is a link as to how I came to buy these JBL's new back when I was 19 yo and how they have been away for the last 30 years before finally getting them back a few weeks ago.
http://www.audioheritage.org/vbullet...-L200-vs-L65-s
What I am looking to do now that I have made up my mind on the L200's over the L65's is to first incorporate the 077's into the 200's. I am going to go with the simple idea of a 1mf cap and L Pad and see where that takes me sound wise. Other things I am considering is to rebuild the original crossover, create a new 3 way or, if there are any other crossover design improvements that can be recommended, maybe try that. Another possibility at some point down the road would be to go with a active crossover, get another amplifier and bi amp. Then there are other things to try out possibly such as plugging off one port, elevating the cabs etc. But basically am looking for ideas in keeping to the original drivers (including the 077's) and see what sort of sound improvement can be had.
Other than adding the 077 tweeters, what is an easy thing to do to improve the sound, particularly the bass. Does plugging off one of the baffle ports help with this driver? Or would an EQ work better for mellowing out the boominess? .
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Originally Posted by hjames
New tweeters installed!
I have been against drilling a 3 inch hole in these cabs at least until I have made the decision to keep the 077's so these mounts are working out well as a temporary solution. In fact they are working good enough I am considering keeping them mounted like they are permanently. The tweeters are proving to be real improvement in my listening experience, and something I had been missing since I was using the L65's. The down side to these speakers now I suppose is the bottom end frequency with the LE15B's. I don't know quite what to think yet. Some of the music I listen to doesn't sound bad while other stuff comes across as boomy. This seems especially true with newer recordings, say around 2000 and later where they seem to have a lot more bass in the recording. The 200's don't seem to like that much! However the music from the 70's sounds okay, well good enough depending on what you are comparing them to. I was listening to some of my 70's music the other evening and a track from The Alan Parsons Project's called Stereotomy came on which is a pretty dynamic song. I was just drawn to crank it up, way up and it sounded so good I didn't care if my ears rang for a week! In that track there are footsteps on a hardwood floor that made the hair stand up on the back of my head! Anyway these old speakers still have the ability to really delight the senses. 
