daily.redbullmusicacademy.com/2015/03/richard-long-coney-island...

Siano was there with Dan Prosseda, who works on sound for Eldorado and other rides in the neighborhood. “The Polar Express has a dynamite system,” 

Siano said of …

https://www.habitatmag.com/Publication-Content/Board-Operations/...

So, in December 2011, Cummings paid to bring in sound engineer Dan Prosseda of the Brooklyn company Sound Control. He confirmed in his report that, "Upon entering the premises, there was a constant humming noise present near the radiators as well as vibration in the piping," and he took measurements in the kitchen, living room and bedroom.

https://www.silive.com/westshore/index.ssf/2012/05/hum_sticks_in...

Prosseda evaluated the installation, and said that when he visited in April, he found multiple holes and spaces in the ceiling that allow sound to easily penetrate through the floor above the boiler.