An introduction to the world of car audio

It is important to know this and experiment, where possible, by altering the mounting angle of the speaker to achieve the best results. It is also likely that in the upper frequencies, where the wavelengths are very short, the sound we hear through our left and right ears may be slightly out of phase.

Click to View Things get more complicated than that. Of course something very dense and rigid like a brick is less likely to be made to resonate than a guitar string or a thin piece of wood. The so called Music power would be only 50w per channel.

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

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.

The lower the frequencies being produced and the more loudspeakers there are reproducing that range of frequencies, the more likely it is that phase cancellation will occur. A bigger amp just gives you the opportunity to go to higher volumes without distortion.

Instead, it is transformed into a tiny amount of heat. The smaller and lighter it is, the easier it is for the amplifier to control it. It may sound crazy but sometimes works well. There are different ways in which power is measured by amplifier manufacturers to make people think that their amps have more power than others.

So what is sound? Most reputable manufacturers use the RMS rating.

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It can move at the required cycles per second, but its size means that it can only displace a certain amount of air during each cycle. If a large wooden panel is vibrating, the air next to it is pushed away.

A lot of people wonder if too much amplifier power can burn up the speakers. On the other hand, they have some drawbacks that make them a rare breed. This is the equivalent of the actual power delivered. If you are going to be using multiple speakers, make sure the amp is 2-ohm stable or less.

For mids and highs, anywhere from 30 to 50 watts RMS per channel would be a minimum. As the panel returns to its starting position, the air becomes less dense as it fills the void in front of the panel. Look at the size, weight of the amp. What usually occurs in a vehicle, however, is that speakers are positioned some way apart and at different angles relative to the driver and passengers.

When sound is recorded for stereo reproduction, it is assumed that the listener will be positioned equidistant between the two loudspeakers.

Introduction to CarPuters

The sheet helps to absorb panel resonance because its own resonant frequency is very low, so the resonance occurs at a much lower frequency and becomes less noticeable. If you would like to know more about sound and the principles of hi-fi sound reproduction, there are many good books on the subject.

If we listened to and recorded the sound of a single flute in our living room, for example, and then replayed it via a single full-range speaker positioned in exactly the same place as the flautist, there is a good chance if the recording equipment and hi-fi system is of a good enough quality that it will sound more or less identical.

Class B amplifiers are the most common by far. When deciding where to position speakers, especially midrange and tweeters, try to install them so that the left and right speakers of each matched pair are equidistant from the listeners. Imagine a bath full of water.

This takes us back to the analogy of the hand and the dinner plate in the bath full of water. Big objects and small objects can generate pressure waves and therefore sound, but a small object must move quicker to cause the air in front of it and behind it to be compressed.

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. For example, an amplifier is rated at w peak per channel.

Now imagine speakers at the front and rear of a vehicle, each producing sound pressure waves. 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 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.

A sound of Hz will have a wavelength of six inches, and a sound with a frequency of Hz will have a wavelength of two feet.

Of course space in a vehicle is limited and so we tend to install fewer speakers, usually covering the sub-bass, mid-bass, midrange and upper frequencies. An introduction To Amplifiers! This type of amplifiers produce almost no heat and are very small in size, but really expensive.

If you decide to mount the tweeters higher, try if possible to mount them in a position which is half the distance to the midrange speaker - there is some evidence to suggest that placing the mids and tweeters exactly degrees apart can improve stereo imaging.

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.Even if you plan to keep your car's stock sound system intact, a good understanding of aftermarket car audio options can be helpful when you're new-car shopping —.

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 For Car Audio Enthusiasts compiled & edited by Kevin O'Byrne, founding editor of the UK's Car Stereo & Security magazine Although many car audio enthusiasts already have a good understanding of how sound is produced, no technical manual should start without covering the basics of its subject matter.

Car and Driver presents The History of Car Radios. Read expert vehicle reviews and award-winning feature content at Car and Driver.5/5. 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.

An introduction to the world of car audio
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