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Music is an everyday part of life, especially while driving. This fact is because most working adults only have time to listen to music in the car before rushing home. So it is no wonder people are installing subwoofer speaker systems in their vehicles. In a car the subwoofer speaker system contains three basic components; speakers, subwoofers, and amplifier. The power amplifier is one of the best parts of this system.

What is a power amplifier and what does it do?

The power amplifier is part of a subwoofer speaker system. It is named solely on the power it outputs. It sends an "amplified" signal to the loudspeakers to give it the bass sound. An amplifiers main purpose is to take a weak signal and make it strong enough to drive the loudspeaker.

With a subwoofer speaker system, the power amplifier works on and input and output basis. There are three stages power supply stage, input stage, and output stage. When learning about or dealing with these stages you will come to see a lot of technical jargon that can be hard for some to understand.

The power supply stage deals with powering the power amplifier. This happens by taking 120 Volts Alternating Currents (VAC) and converting it to Direct Currents (DC). An easy way to understand this is that your amplifier will convert the power coming in so that it is usable.

The input stage deals with taking the input signal and preparing it for output. When dealing the input stage it is best to have a balanced input as it helps with noise reduction versus single ended input.

The output stage is the most important as it is the stage that actually amplifies the weaker signal to the speakers. This stage is where the most transition occurs, thus producing the heat you feel after the amp has been on too long.

Power Amplifier Classes

Class A amplifiers are the second most commonly used class of amplifiers in a vehicle. They have a low distortion, meaning the distortion lessens the lower the volume is. Unfortunately this class of amplifiers is highly inefficient, using up power even when there is no music coming through the speaker.

Class B amplifiers are a cost effective approach to a subwoofer speaker system. They provide a much higher amount of efficiency, unfortunately it entails enduring more distortion when dealing with a low signal level.

Class C amplifiers are never used in any audio systems, especially vehicles. The reason for this is there is way too much distortion to provide any quality sound in an audio circuit.

Class D amplifiers are in a wide range of car audio subwoofer speaker systems due to the efficiency, quality, and cost. They have been around for a long time, but up until recently they weren't used as often.

In layman's terms the role of the power amplifier in your car is that is boosts or amplifies the signal to your speakers, allowing for a stronger sound. When looking to install a subwoofer speaker system in your car, you always want to have a power amplifier to give the boosted sound. The safest bet is to go with a Class D Amp or a Class A as a second choice.

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Pimp Up Yo' Ride! Why You Need A Good Car Stereo System

You've got a nice pearled paint job. You've got your 18' sized chrome mags. You've got an interior job that looks like a dream. But all of that would be superficial if you don't have a good car stereo system in your ride.   

A good car stereo system is a marvel to experience, just like a poorly constructed car stereo system is such a pity to look at. The price is a big factor, but not all expensive hardware perform well if installed haphazardly, or if hooked up with incompatible hardware. It is also subjective, just as some of us find black cars more appealing than other color cars. If you like your car stereo system more than any other in the same vehicle, then you have the best.

If you like some other car stereo system more than yours in the same vehicle, then that one is better. Only you can decide which is best for you. For a car stereo system to be a good or great, it must first meet or exceed the user's expectations.

The type of vehicle also plays a major part in what kind car stereo system you should build. For some people, after only being in a few vehicles their ears recognize the inherent characteristics of this unique environment. Most of what we hear in a vehicle is a recording of the original artist in a given environment, usually in two channel stereo which can be playing in a totally different environment with the listeners placed in awkward listening positions relative to the placement of speakers. A great car stereo system is created with the understanding of acoustics, basic electronics, and the different products that are to be used.

A good idea is to gain references to compare to your auto audio system or any other and experience it live in as many different environments as possible. One of the best ways to accomplish this is to go to expos' and conventions. As you hop from exhibit to exhibit you'll immediately notice the difference in sound characteristics of each setup. You will find some car stereo systems that you prefer over others, if not a favorite and that is the way to choose a cheap car stereo system that you like. Also ask for specs, they'll gladly give it to you.  

The benefits of aftermarket speakers are: they have a larger frequency response (more music coming through the car stereo speakers), more power handling capabilities, they will brighten your highs and increase your auto audio system bass. There are two types of car speakers available: the dual cone and the two way. A dual cone has a small paper cone built into a larger paper cone.

Amplifiers are the backbone of your car stereo system. Weak amplifiers damage good car stereo speakers, not the other way around. Amplifiers provides musical power and contributes greatly to the elimination of distortion and the upgrade of sound clarity. The size of the amplifiers will be proportionate to the level of power you want. You can tell a good power amp by turning the auto stereo system above half volume and still hearing clear amplification. Bear in mind that the more power you have the better control you have over your system.
 
A good car stereo system is something to show for. It can bring satisfaction to you, the owner, and to those who will witness it. It will also raise the quality and value of your car in case you wish to resell it.

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how do you eliminate charing system wine from aftermarket car stereo amp?

tried tightening grounds

-Reground it to a clean, bare metal spot within 3' of the amplifier. Retightening the grounds will not make a difference if the ground was not sufficient enough to begin with.

-The power wire and the ground wire should be the same size.

-Run the power wire and the RCA wires on opposite sides of the vehicle. Running the RCA wires on the same side as the power wire will introduce engine noise or alternator whine.

-If the amplifier is of lower quality, there is nothing you can do, the problem with engine whine is a common occurrence in cheaper stereo equiptment.

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