I just recently bought a Makai with the option J, $4,330 WS system. Rev 10s on tower and 6 inside speakers and a 10" sub in a ported box in front of the helm. Two WS amps also. I too was disappointed with the bass this system had. Yesterday, I discovered the hz on the bass filter was at 55. I changed it to 160, as you just showed and it made a huge difference. I still think there are some other settings that need adjustments, but I am not familiar with the Fusion RA70NSX. I have to say that head unit is not very user friendly for a first timer as far as controls go.
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2021 Moomba Makai
Black Cherry Metal Flake & Fire Red
Nibral OJ 15.5x15 Altitude/Wake prop w/1.76 trans v-drive
Wet Sounds bow speakers & 10's on the Tower & ported sub