the box pro USB2CAND CanBus Converter

I wanted to change the hi-cut/low-pass, to get the crossover to fit with my PA-tops. However, the low-pass filter can not be changed, its soldered into the hardware, i guess.

So i spent money on thisbox that could not change the crossover upwards. The subs play solid up to about 80hz. Wish i could change the crossover up to 120hz. Then i would not need to bring a couple of extra subwoofers to amplify mid bass. Maybe i expected too much from the subwoofers.