While I found the original crossover design quite acceptable and perhaps even preferable for a center channel speaker, after extensive listening I found for music reproduction it was slightly too forward for my tastes. Looking at the responses, I suspected the shelf in the stop band might have been responsible. I modified the crossover to move the shelf an additional 5 dB down, and mitigated the hump at 1400 Hz. The crossover differences are small, with only the value of the inductor and resistor in the woofer network changed, and the addition of a resistor in the tweeter network. The new crossover has much more natural voicing with excellent detail, and even better off axis response. I'll have to say I am quite impressed with the capabilities of these drivers, and the sealed system response. I believe the word I used when I first heard these with the new crossover was "WOW!".