3 ms·

The Sony solution actually has subwoofers hidden inside for the bass. I’m still missing how this paper-thin solution could possibly produce any decent bass.

• Applejinx 4y ago
  It absolutely can't. This is a tweeter design. Might be good as that. It's not going to have even enough excursion to do midbass or lower midrange. Mind you if the description is correct, to hear it properly they need to adhere it to a physical object. Having it dangling in free air like that means it's a lobed omnidirectional radiator: opposite of a dipole, it's putting out the same signal to either side across the whole plane, and the edges aren't putting out anything, and the range isn't low enough to hear it side-on very well: highs are directional. This is why when he curves it you hear treble louder: it's making a little dish aimed at the mic (roughly). You could easily make a tweeter for 'head in a vice imaging' where the curvature is such that it's aimed only at the ear position, for less near reflections off walls. As described, you'd always want to back it with a physical object. In a large enough area it's a midrange driver with very high peak output in the highs. You could curve it the opposite direction to make the mids slightly dominate over the highs: slight off-axis will attenuate highs a little more than mids, and the differences in hearing position across the curved surface (it's a smooth radiator without any specific driving points) will cause higher frequencies to cancel, again reinforcing lower frequency stuff.