low frequency sound

Hello , i have a blue sound vault , conect with my bose music installation. Recently i notice that i have a sound in my house. Never had this. I wonder if can come of my blue sound. He is always ready to play music. The funny part is that i have the hum in al my rooms , but also in al my rooms i haven speakers of Bose. So i wonder if the sound is coming from my bluesound. Read on a forum that divices that altimes connect can produce such as sound. So can i turn my bluesound of , and only put on when i need it to play some music.