Have you verified the (cd)compression driver/horn and the 2226 are aligned with the proper electrical polarity?

Also, I have found to either have the cd vc 3" from the front baffle mounting of the 2226, or to use 7.25" back and reverse the polarity.

Also, keep in mind the polarity of the JBL 2226 is reversed. A positive signal to the black terminal created forward movement.

Try swapping the polarity and let me know what happens!!!

Ron sends