Loudspeakers are an integral part of home entertainment today. From a small set of powered bookshelf speakers connected to your computer to a complete home theater speaker system in your living room, dynamic speaker technology has been with us for since its formative days at the end of the 1800s. Innovations in design, materials and acoustic science have shaped the quest to refine sound reproduction for over a century, and continue unabated.
Car audio has come a long way since its formative early days. When radio broadcasting began in 1920, vacuum tube radio receivers became available as well, sparking what could be referred to as a "radio craze". Everyone had to have this amazing new technology - many car owners even installed home radio sets in their vehicles as a novelty. This led to the eventual commercial introduction of the purpose-built car radio in the 1930s, and automotive stereo systems have continued to evolve in complexity and performance ever since.