Originally Posted by
3dbdown
Stan...
There's not a super-abundance of differences among the
LE-5 series of drivers as regards their sound. I'm talking hearing versus measuring, of course. Mostly some smoothing out of mid-range bumps from the earlier versions.......I have 2 old JBL lab samples of the LE5-9 prototypes that I was running in my Jubals. I recently changed back to the original LE5-5's for the sake of originality only. But, my point is, that my lab samples also have inverted domes. This was not the factory configuration, however. Mine not only sounded great, but I think I actually preferred them over the originals, and may swap them back.
Good luck and good hunting, but I think you'll be fine with what you have.