I'm working on a project to be exhibited early next year and I'm seeking some advice on one particular element. The project explores the kinesthetic properties of sound, and the ability to transform an aural experience into a kinesthetic one. A custom music track will play in the room around a series of metal plinths that the viewers will sit on. I'm seeking a metal that will resonate easily from the bass produced by the subwoofers. I understand that a softer, thinner metal is going to resonate easier. I was wondering: 1) If I could get some suggestions on suitable (and cost-effective) metals to fashion the plinths from. 2) If there's a particular metal that can better transmit the vibrations from the subwoofer to or through the human body. 3) Whether anyone can recommend materials that will resonate from exposure to higher frequencies? 4) Whether there's information on how to use different frequencies to trigger physical sensations in the human body without the use of a conduit (i.e. the plinth). Ideally I'd like to exhibit a series of plinths made of different metals fashioned at different thicknesses so that they're all unique and offer a unique kinesthetic experience. Please excuse me if my terminology is inadequate or inaccurate.