Selecting the proper head unit for your car stereo system need not be perplexing. There are many factors to consider when spending your hard earned cash on what you hope to be the perfect stereo head unit, but doing some planning ahead can save you a lot of grief. While I can't select a stereo for you, I can give you some ideas of things to think about before your purchase.
The first place to start is to consider what you expect from this system and how you are going to use it. Are you trying to compete in competitions or are you simply looking for better sound? Do you want to play MP3's or movies? Think about what the future may hold. If you intend to add amplifiers or other external components later you'll want to make sure the head unit you are looking at has the capabilities necessary to expand. There are many different options available. The following list will help you get started:
· Inputs: If you want to add another source for sound to your head unit such as a CD changer a personal MP3 player, or maybe even a portable DVD player, you will want to make sure your head unit has the proper connections. Many current head units have the CD changer controls built in, but few have inputs for other components such as a portable DVD player. You generally need to shop the higher end units to get more inputs and more flexibility.
· Preamp outputs: If you plan to add amplifiers you will definitely want these. You're best bet for expandability is to purchase a head unit that has two sets of speaker outputs and a non fading subwoofer output. If you don't want a subwoofer, then two outputs are fine. If you just want a basic system without external amplifiers, there's really no use spending more to get them. However, if there is even a slight possibility that you might be adding amplifiers later, you may as well save yourself the trouble and get the preamp outputs now. Preamp outputs come in varying signal strengths. The higher the voltage, the cleaner, more dynamic the signal that is sent to your amplifiers. 4V or more is ideal, but less is fine unless you're creating a complete higher end stereo.
· DSP, Sound Stages, etc.: Some higher end systems come equipped with sound processors or controls for them. If you want surround sound or other different types of sounds you will need to make sure your head unit either has it or supports an upgrade path for it.
· Built in amplifiers: Most units have amplification built into the head unit. If you are not going to be adding amplifiers you'll want to make sure the head unit you buy has enough power to drive the speakers with reasonable authority. It is important that you use efficient speakers that don't require much power if you're going to use an internal amplifier. Make sure you match your speakers and head unit as closely as possible. If you need help doing this, there are still some helpful dealers out there that know a bit about how everything works together. As a general rule, you'll want to get one with the most power you can find or go with separate amplifiers.
· Ease of Use: This is something many people overlook when shopping for a stereo. They get swept off their feet with whizbang features, swimming fish, and other things and then realize later that operating their head unit requires a graduate degree from the Nintendo School of Game Playing. If you want all these gadgets and visuals make sure you are prepared to deal with using them on a day to day basis. Otherwise, look for a system that concentrates on friendliness and simplicity. Keep in mind that everyone is different, so you need to decide which works best for you. Spend some time looking at the head units and playing with the buttons. Make sure you can safely operate the stereo while driving or maybe even with gloves on if you wear them.
· Security: Almost all head units have a security feature of some sort now. Some systems such as Eclipse offer Electronic Serial Numbers. This serial number is stored in the unit's memory and can never be altered or removed. In the event it is stolen and found, Eclipse can match the serial number to your file. More common are removable face plates and faceplates that disappear into the unit so it can't be easily seen. Quite honestly, I think having good insurance and an alarm system is your best bet here. None of these head unit security features will stop a thief from breaking into your car and none of them will keep him from trying to get whatever he wants.
· Dimensions: Almost all aftermarket stereos are standardized in dimensions. This is referred to as DIN or Double DIN. Unfortunately, many auto manufacturers refuse to adopt and use this standard for their head units, instead trying to force you to keep their head units. Therefore, you may need to have custom dash work done or buy a dash kit that will fit your new stereo. In any case, Double DIN is the equivalent of two DIN units.
Luckily, many late model Nissan vehicles utilize double DIN factory
head units.
When shopping you will want to consider how you want to use the space in your dash. There aren't nearly as many Double DIN units available, so if you're determined to fill a Double DIN or larger space, keep in mind that you will be more limited in choice. If any modifications need to be made you need to consider that as part of your cost.
· Warranty: Most head units have a one year manufacturers warranty. If you are buying a complex and expensive head unit you may want to think about buying an extended warranty, but only if you are buying from a local dealer who is reputable and will stand behind their warranty. Most higher end systems have two or three year warranties but require that you have your head unit installed by the dealer. Otherwise the warranty is only one year or less. Buying online through discount sources almost always voids your factory warranty. So, if you're trying to save a few bucks online, make sure you ask about warranty issues and be willing to accept the fact that you will most likely be the one paying for repairs in the event that something breaks. Never buy a head unit that has a warranty of less than one year!
There you have a list of common things to think about! Most anything else is purely cosmetic or convenience such as lighting or remote controls. As with any purchase of this nature, it is best to look at as many as you can and not rush into buying. Rushing the purchase just leads to potential regrets. There's nothing worse than buyer's remorse and buying the wrong stereo is something you're going to have to live with every time you get in your car. Just take it slow, research, and experiment a bit and you will have many happy miles to look forward to. Hopefully these basics will help you and show the salesmen that you know a thing or two. So what are you waiting for? Get out there and start your research!
