The terms for disparate speaker drivers differ depending on the application. In 2-way loudspeakers, there is mostly no driver called "mid-range". Local stereos avail the designation "tweeter" for lanky frequencies whereas professional audio systems for concerts typically designate all types of altitudinous frequency drivers as "HF" or "highs" or "horns".
Alexander Graham Bell patented the first electrical loudspeaker as part of his telephone in 1876, which was followed in 1878 by an improved version from Ernst Siemens. Nikola Tesla reportedly be developed a coincidental device in 1881, but was not issued a patent. During this time, Thomas Edison was issued a British patent for a system using compressed air as an amplifying mechanism for his early bird cylinder phonographs, but he ultimately settled for the familiar vein horn driven by a membrane attached to the stylus. In 1898, Horace Short patented a design for a loudspeaker driven by compressed air, then sold the rights to Charles Parsons, who was issued several additional British patents before IPOD Speakers 1910.