Quote:
Originally Posted by shellylh 
Jerry is going to send some demo units of the JH13 to me for the upcoming Houston meet that is coming up. Any differenced I should know about between the universals and customs that I should know about.... treble spike or something like that?
Anyway, look for more impressions in our meet thread in a couple of weeks. I will finally be able to try these out (since I got sick at CanJam and missed out there)!!! 
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Two difference I heard:
The 6 Khz treble spike is bigger and more audible on the universal fit version than it is with the final version where it tamed enough to only hear on test tones but doesn't seem to affect the music or add sibilance.
The universal version was difficult for me to get a good seal to evaluate the bass as well, and my final custom has more bass than the universal did.