There are several types of car speakers available on the market:

1. Coaxial speakers – These are the most common type of car speakers and are easy to install. They have a woofer for low frequency sounds and a tweeter for high frequency sounds, and both are usually housed in the same frame.
2. Component speakers – These speakers have a separate woofer, tweeter, and sometimes a mid-range driver. They offer better sound quality than coaxial speakers but are more difficult to install.
3. Subwoofers – These speakers are specifically designed to produce low frequency sounds, such as bass. They can be added to a car's audio system to enhance the overall sound quality.
4. Tweeters – These are small speakers that are designed to produce high frequency sounds. They can be added to a car's audio system to improve the overall sound quality.
5. Mid-range drivers – These speakers are designed to produce mid-range frequency sounds. They can be added to a car's audio system to enhance the overall sound quality.
6. Full-range speakers – These speakers are designed to produce a wide range of frequencies, including bass, mid-range, and treble. They are a good choice for those who want a simple, all-in-one solution for their car's audio system.
7. Amplified speakers – These speakers have an amplifier built-in, which allows them to produce louder and higher quality sound. They are a good choice for those who want to upgrade their car's audio system without adding an external amplifier.