I hope you are using two?
This will get into an age old argument...
With the stereo inputs of the JBL, I use one unit. I've listened to the output of the JBL and my dual Bose Compacts. To my ears, in the venues I do, my JBL sounds every bit as good(better on the bass end) than my dual Compacts in stereo.
My JBL is closer to the output of the Bose L1 1S with a B1 sub...I've compared side by side.
By the way when I say venues that I do, we're talking 100 folks or less; 99% of the time dining room size or less