Car Speakers Let’s be honest: Unless you buy a car that has an expensive, brand-name factory stereo option, your standard speakers probably aren’t going to be anything to write home about. Speaker upgrades are a basic and fundamental way to get your car custom sound system started, and probably the easiest way to get immediate, better audio quality in your vehicle. You’ll want to measure the speakers that came with your car to make sure you buy the right size and shape. For instance, most typical front speakers are four, five or six inches (10, 13 or 15 centimeters) across, while most rear speakers measure 6 by 9 inches (15 by 23 centimeters). There are two types of speakers to consider: coaxial and component. Coaxial speakers are the cheapest and most common models. They integrate midrange sound by incorporating a woofer (for low range sounds) and a tweeter (for high-pitched sounds) into one unit. These speakers are easier to install, but generally produce lower sound quality. You can put speakers like these into your doors or the rear deck — the area just below the rear glass — by swapping them out with the originals. Component speakers are a set of multiple units — including both woofers and tweeters — installed at different locations throughout the car, each one producing its own sounds to give a kind of concert quality to your music. These are typically more expensive than standard car speakers and installing them is often much harder, too. In fact, you may end up needing a jigsaw to cut a hole in your A-pillar (where the front door meets the windshield) to install the tweeters [source: Crutchfield]. Then of course, there’s the infamous subwoofer. If you want that throbbing, thumping bass that can be heard (and often felt) from several yards away, you’ll want one of these in your car. Subwoofers provide that deep, low-end bass and are often installed in the trunk or rear compartment of the vehicle. Above all, listen to the speakers you want before you buy them. Do they produce the quality you’re searching for? Do they suit the type of music you like? Only you can tell what speakers are best suited to your ears, so take them on a test run before you make your purchase. Speakers are great, but without a receiver to play music, they don’t do much. In the next section, we’ll talk about the latest in receiver technology and how today’s radios do much more than just play music. When it comes to being entertained in your car, there have never been more options available as there are today. So what exactly do you want to do? Look at maps, listen to your MP3 collection, or watch a movie on DVD? If you’ve got the cash, you can do all of the above. A good place to start when you want to bring your audio dreams to life is a car receiver — also known as the stereo or head unit. A new receiver can have as many features as you’re willing to pay for. Basic receivers provide you with CD playback and often feature colorful graphics. But for a little more, you can get one that plays MP3/WMA files or has an auxiliary input for your music player. In addition, you might also consider a satellite radio receiver for your car. This gives you a lot more audio options, but be mindful of what it costs to subscribe. If you’re always getting lost on the road, it may make sense to get a receiver with a built-in navigation system. On newer cars, these are optional and sometimes even standard car equipment, but really any car can be retrofitted with one. A typical in-dash navigation system is made up of a car stereo with a small built-in car monitor, a connection unit with audio and video inputs and outputs and an external GPS antenna [source: Crutchfield]. These can cost more than $1,000 in many cases, but they have that great “from the factory” look and boast a number of other features, like being able to locate ATMs or restaurants in your area. A more portable unit is a less-expensive option. So what’s the ultimate in-car receiver? For now, it may be the DVD receiver. These have extra-large LCD screens and when you aren’t playing DVD movies with them, they have impressive displays to control your car’s audio and other features. Bluetooth, iPod connectivity and satellite radio can all be controlled from such a receiver and some also include GPS navigation. If you really want to get high-tech, some even include a rear-mounted camera to make backing up much easier. You can also connect a rear monitor (or monitors) to entertain your passengers in the backseat. One thing to keep in mind is the cost, because a DVD receiver can be a big investment. You can expect to pay several hundred dollars for a good one, not to mention the cost of installation and extra monitors. Be careful, as it can all add up quick. Up next, we’ll discuss amplifiers — because all this equipment is no good if it’s not getting enough power.