It was ridiculously loud on Friday, very quiet on Saturday, and then not too bad on Sunday. I called and complained to the city (311) the police, 311 again, as well as the Northlands Community Relations Officer, who was kind enough to leave his phone # on a circular that was delivered to our house.
I was 20 blocks north of the show leaving the gym with my earphones in on Friday night, listening to heavy metal, and I could hear the music from Sonic Boom over the my earphones.
Don't be afraid to call the city and register a complaint.