If you're new to the car stereo market, you might feel overwhelmed by the sheer number of parts and accessories needed for a top-of-the-line car stereo system. In this article, we'll explore the basic components that make up a functioning car stereo system.

The Head Unit: Making It Happen

You may have seen the term "head unit" before and not known what it was. Simply put, the head unit is the part of your car stereo that produces the music from the radio, tape, CD, or other devices. Nowadays, you can also get head units for your car stereo that can play DVDs or music and video from USB flash drives or memory cards. Head units have sure come a long way from when people used to install home stereo equipment in their vehicles!

Amplifiers: Bring the Boom

While your head unit may provide its own internal amplification, which might be enough for you, most car stereo enthusiasts will eventually want to add amplifiers to the mix. Simply put, an amplifier takes a signal coming out of your head unit and makes it louder. Be careful when shopping for amplifiers, as some large amps can draw over 100 amps. This may be well over what your alternator and battery can provide and could cause damage to those components.

Speakers: Woofers, Tweeters, What?

The best head unit and amp are completely useless without speakers. Speakers, regardless of size, all do one thing: take the electrical signal coming from either the head unit's internal amp or your external amp and turn it into sound, usually loud sound. The different types of speakers are classified by the range of sounds they can reproduce. Tweeters, for example, only reproduce high pitches, while woofers reproduce the upper bass ranges. Midranges make midrange sounds, strangely enough, while subwoofers cover sounds from the low bass all the way down to sub-sonic—that is, those sounds you can feel but not hear. Subwoofers are usually the first candidates for external amplifiers since they require large amounts of current to create that bone-shaking bass.

Putting It All Together

Let's review: head units take your CD or tape and convert it to electrical signals. The amplifier makes this signal larger, and finally the speakers take that signal and make sound out of it. These are the basic components you need for any car stereo installation. Accessories like crossovers and signal isolators may or may not be needed for your particular application.

These are the basics you need to know for all car stereo systems. Now that you have a better idea of what these different terms actually mean, you should be able to shop intelligently for your new car stereo system.