As usual, my preference is to bypass the passive crossover (XO), get a really good driver, give it its own power amp with a built-in DSP (e.g. Crown XLS1502 ) and do the low-pass XO in the amp.
Thank you for all the references. I've already read a lot of them, I'm primarily looking for a new woofer. I don't want to modify the crossover frequency. I am hoping to find a speaker that I can be put straigt in.
I guess I have to cut the speaker frame of the new woofer (has anyone done this?).
I am using the Vista in a home theater (Atmos) and with a subwoofer (crossover 100 hz).