If those subjects include humans, be aware of the dangers. From what I've read, frequencies around 7Hz can trigger epileptic seizures in susceptible people.It will be used in a series of expironments to test the effects of 8 to 10 Hz on various subjects.
They did yes, but they didnt do it right, vibrate the bowl at 10Hz , I cant see sound doing it but there you go. there are some biology experiments at these frequencies but one of the experiments is wrong! its a well known secret that some text books have had the experiment in for 40 years and the frequency given was a typo!! Even today you get new text books with the same mistake in lol.Didn't the Mythbusters do something with 10Hz Brown note frequency. As I recall Myth Busted
They where 2x18" subwoofers, which would typically handle 60Hz and below. They blocked the reflex ports to effectively make them sealed enclosures. Not optimum output at 10Hz, but significant.The PA speakers used by the Mythbusters were for voices and could not produce low frequencies