Even before the National Football League announced that Dr. Dre, Mary J. Blige, Snoop Dogg, Kendrick Lamar and Eminem would perform during the Pepsi-sponsored halftime show at Super Bowl LVI on Feb. 13, Seth Dudowsky knew he had a crucial sound issue to solve. One of his many responsibilities as the point person for the production at SoFi Stadium in Inglewood, Calif., which would be seen by 103.4 million television viewers (and rack up more than 121 million YouTube views), was keeping the set list under wraps. The problem, however, was the venue, which is next door to the NFL’s Los Angeles-area headquarters where he works and is anything but soundproof. “It’s technically an outdoor stadium with a roof,” Dudowsky says. “So sound blows out the [open] sides of the stadium.” Knowing that medi...