Infinity

Infinity was founded in 1968, and in 1983 was acquired by Harman International, which was then acquired by KKR and Goldman Sachs in 2007. Infinity brought such innovations as the Neodymium magnet and the Polypropylene speaker cone to the audio world. More recently, Infinity has used woven fiberglass in its cone and introduced proprietary tweeter systems into their mobile audio speakers.