An introduction to the world of car audio

Introduction to CarPuters

This type of amplifiers produce almost no heat and are very small in size, but really expensive. Watch out for companies that use bigger heat sink than needed, giving the idea of a more powerful amp.

If we ignore for a moment the mechanical limitations, there is nothing to stop a good 6 inch mid-woofer from reproducing very low frequencies. The surface area of a inch subwoofer is like a dinner plate, able to move enough air in one cycle to produce a pressure wave capable of rattling the windows in the house across the road!

Why materials resonate One thing we want to avoid in a car audio system is any panels such as the metal panels of the vehicle itself that resonate, that is, vibrate because of the movement of air within the enclosed space of a car.

Because of this, some may find it difficult to understand the reasons for installing speakers in particular positions in the car, for example, or why a woofer operates best in a particular size and type of enclosure.

Sound is caused by the movement of air. How to tell if I am getting a good amp? Now imagine speakers at the front and rear of a vehicle, each producing sound pressure waves. We compensate for not being seated central to the loudspeakers by adjusting the balance control on the CD player, which increases the volume level on one side relative to the other.

At literally the other end of the scale, an A played three octaves above middle A has a frequency of around Hz and a wavelength of just 3.

How do I get the best sound out of my car's audio system?

The subwoofer, or subwoofers, usually have to be installed in the rear of the vehicle because of their size. More heat means more heatsink area, so even though most class A amps have built-in cooling fans, they are big.

Although there are full-range class D amplifiers available, most high-end manufacturers are designing amps for low frequency applications.

Class A-B amplifiers are a combination of the two types described above. This is adequate but the built-in power in a head unit is usually not strong enough for high volume listening and not clean enough for the discerning ear. The problem is that it is not currently feasible to do this in most homes, and certainly not in a car, which is why we have Take care when choosing the slope and setting the crossover point on the channel s feeding these speakers.

Good amplifier designs make this crossover distortion very minimal. The manufacturer claims that the material produces absolutely no sound of its own - in other words, the panel resonance is completely eliminated. Similarly, a inch diameter subwoofer is designed to give low bass.

The soundboard of a piano and the large pipes of a church organ are capable of producing large wavelengths, which means lower frequencies. Now start a gentle wave from the other end of the bath. Its frequency response is affected, and phase changes may also occur.

This is often very difficult to achieve of course, but do the best you can. If the speakers have the proper crossovers and are not distorting, then it is really hard to blow them.

This only corrects the stereo image up to a point, because we are still physically closer to one speaker than the other, and adjusting the balance control has no effect over the phase and timing of the signal reaching our ears. That leaves you with only watts. If the vibration is slow then the air just moves out of the way, but as the rate of vibration increases to between a few tens and a few tens of thousands of excursions per second, the air cannot move out of the way fast enough and therefore compresses as the panel pushes it away.

The problem with this design is that at the point when one transistor stops amplifying and the other one kicks in zero volt linethere is always a small distortion on the signal, called "crossover distortion".

When sound is recorded for stereo reproduction, it is assumed that the listener will be positioned equidistant between the two loudspeakers. The footwell positions often work well for midrange speakers and sometimes tweeters too.

Overheat, short-circuit, overload protections are good features that any good amplifier should have. Look for a low THD total harmonic distortion rating.

For example, if we have a pair of 6-inch speakers producing mid-bass at the front of the vehicle, we should avoid having another pair of speakers reproducing exactly the same range of frequencies from the rear shelf.

Only the levels are different - the wavelengths from both the left and right channels will be identical in every other way.Car and Driver presents The History of Car Radios.

Read expert vehicle reviews and award-winning feature content at Car and Driver.5/5. Welcome to Carputer World! We are glad to bring you up-to-date news, reviews, guides, videos and resources about carputers and related products and accessories.

As you may already know, a caputer is a full-fledged computer/pc inside a car, truck or boat to provide similar functionalitieas like a normal desktop/laptop pc, but on the road! The main.

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Amplifiers, Receivers and Other Car Audio Equipment - Different types of car audio equipment factor in to getting the best sound out of your car stereo. See how car audio equipment improves sound.

Laws of physics tell us that Power can be obtained by multiplying Current and Voltage. For example, if your amplifier gets 12 volts, and it draws 20 amps, then power would be watts, right?

Not exactly. In the real world, amplifiers waste 50% or more of the power in the form of heat. That leaves you with only watts. The car stereo is the centerpiece of any car audio system. They look great in the dash and are full of useful features.

Also known as a radio, receiver, or head unit, today's car stereo performs a variety of complex functions so that we can better enjoy our drive time.

Apr 30,  · Hello, I am new to the car audio world. I have an 04 Alero. I have only changed out the head unit in my car. I am wanting to redo my speakers and get a sub and amp if I can find the funds.

I dont want my car to be the loudest on the block I just want it to sound good to me inside the car but I wa.

An introduction to the world of car audio
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