Less than two years after acquiring Sound United for $1.025 billion, Masimo Corp. plans to hive off the consumer audio subsidiary along with consumer health products such as its Stork baby monitor and Freedom smart watch and band. The “rushed” announcement made Friday “came after being informed that Politan intended to nominate directors this week,” said activist investor Politan Capital Management. Politan, which owns 8.9% of the company, secured two board seats in a highly contentious proxy battle last year and nominated two more on Monday morning.