nice 
, please be so kind and share some experience with us afther
brake-in period.
Do you have ZOB with FR8 and now replace it with FRX ?
No, I use my own design, lower part is U frame for woofer reinforcement (currently cut at 300hz),while the upper baffle is large about the same as the ZOB, but it is not a straight rectangle to optimize the response, albeit i dont think this would cause too many problems with the response of the FRX.
The points i'm not satisfied with the Hemps seem not to be issues of these drivers (sufficient Xmax for decent dynamics, extended response above 16khz, flat response without equalization -i use a notch at 3khz, better low-end due to the high Qts). Efficiency is about the same.
They are a bit pricy for modified dayton but they may be worth it.
