Plasma Arc Speakers

Plasma Arc Speakers:-Plasma is ionized gas, or current sent through a gas. Plasma is responsive to electrical fields, therefore you can turn electric signal of sound into an electric field which manipulates the plasma. The plasma does have mass and will vibrate creating sound similar to how a diaphragm moves air to make sound. This kind of speaker is visually quite interesting but limited in sound quality. The speaker has reliability problems and therefore remains just a novelty.