28 hz on the subsonic filter. Ive got the 5 channel mini. Great amp. I was contemplating getting a couple of the 750s for my work truck but had to remind myself it was a budget system. Ended up getting a couple of infinity k600 in the outlet section on
crutchfield for 126 each. The minis are a pain to hook up for sure. They need to improve on that. Other then that great performing amps I'm sure you'll enjoy them. I assume your installing the for channel version in the boat as well? Good to see the 750 perform so well on the dyno.