Car speakers are a huge market segment in the audio arena. They are available in many different sizes and designs. A lot of brands that produce audio solutions also have car speakers in their catalogue. The price of car speakers varies a lot, based on their power and brand.
Car audio has a whole other level of crazy sound available to people, speakers from so many brands specifically built for that space. Essentially 2 good speakers could set you up well enough to enjoy your music but this is a sphere where people build insane sound systems; that keep getting more powerful and louder. It is a matter of pride for some to have the best system possible.
There are a lot of qualities available, many no-name brands produce car speakers and the best known audio brands also produce speakers specific to this purpose. The sizes vary a lot as do their power ratings.
The known brands
There are many brands that produce car speakers. Some of the most known brands are Pioneer, JBL, Bose, Yamaha, Rockford, Alpine, JL Audio, Polk, Kenwood, Sony and Infinity; to name a few top producers.
The prices vary a lot based on how powerful or large a speaker is, along with what brand has made it. Keep in mind a car speaker setup generally requires an amplifier to power them.