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Car audio amplifier of choice a few tips

2009-08-22 14:25:52

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Car audio amplifier portfolio, as an integral part of, its importance is self-evident. The flow of car audio as a concert hall to become a solitary journey to enjoy. Whether or not the car audio enthusiast, in the face of such a metal texture of the equipment will be its unique magnetic properties as well. But perhaps for most people, satisfied with the selection of the audio equipment is a problem. The following we will introduce some power to choose a few of the tips. Benchmarking to identify the same power amplifier Sound system power is the most important parameters, that sound system with the ability to load. This is our first at the time of purchase should be attention. However, if manufacturers are all the determination of different products to identify performance benchmarks, the lack of sufficient knowledge is often difficult to make an objective comparison. The same thing applies to power amplifier, power amplifier in view of the logo should pay attention to the following three points: First, the battery voltage. Car battery voltage is constantly changing, two commonly used for identification: 14.4V/100W, 12V/100W the amplifier is completely different from that of the two kinds of power. As a result of a moving car in the process of basically voltage around 12V, so 12V under-voltage power measured value closer to the true situation. Voltage of 12V and continuous identity-based power amplifier to achieve more than 12V can be achieved when more power. Second, the rate of harmonic distortion THD. In comparing the continuous output power amplifier needs to be in the same (or relatively close) THD under value. THD different values to test out the sound quality difference is very obvious, sometimes marking the largest of its high power, but it is likely to distortion and noise is also high. Maximum power in check at the same time they should also pay attention to the value of THD logo. Third, the frequency range. Amplifier continuous power output should be in the actual frequency range used for testing. The power amplifier should be required to complete the detection range identification, marking only the value of a power frequency does not have any meaning. In determining the same benchmark, we can be compared since the power amplifier. Typically, when choosing the sound system in general follow the principle of high-power output. The greater the output power amplifier that drives their ability to speakers stronger. The power amplifier should be larger than the direction of speaker power, low power, if selected, in the long-term use of high-power output, it is easy to burn, but also lead to poor sound quality, distortion, such as the appearance of failure. Amplifier should have high quality factors Of course, the simple power of the text can not be introduced to better understand the power good or bad. Quality of the amplifier must also be able to quickly respond to the music signal peak, and at the same time corresponds to a strong bass and low distortion / low noise conditions to provide a smooth output. To meet these requirements, we must have the following: First of all, the power performance. This is about the key to power quality. Department and to enlarge its power should be separated from the Ministry of design, can reduce the noise. Large step-up transformer to increase the stability of the current supply, as well as large capacitors that can respond more quickly to supply the necessary current amplification. Secondly, the built-in equalizer parameters. Car audio and home audio are very different from the installed location of speakers is very limited, the importance of sound regulation. In addition, the headrest and the window over the woofer sound effects and perspective caused by the installation of acoustic confusion, car audio system will sound. At this time is the role of equalizer parameters, which can cause sound waves above the wave crest, trough to compensate, adjust the sound field smooth. Furthermore, is the built-in divider. No matter how much power the functions of their own good, the actual installation in the vehicle will also be a result of a wide range of audio problems, the configuration of speakers that can not achieve optimal results. In order to overcome these, in addition to the parameters but also the use of divider Equalizer. There are two built-in divider advantages: First, the system has the scalability, free of the power amplifier and speaker combination. Second, to make a simple adjustment. This will make the entire system's sound quality has improved. Frequent use of external sub-systems as a result of the more complex wiring, easily mixed with noise, need more space to install the system and prices, therefore in the choice of vehicle for power when we do not recommend. Clearly the different uses of power Choice of amplifier is given just a simple parameter specification is not enough, should be based on the whole of the sound system, other users need to carefully listen to the views of professionals, according to the use of different selection of different types and brands of power . According to different uses can be broadly classified into the following categories: 1. Devoted to promote the design of the subwoofer amplifier: built-in infrasonic filter, eliminating the need for external filters. 2. Band equalizer amplifier: can different personal preferences or adjust the sound of space inside. 3.5-channel amplifier: used 2-channel or 4 channel amp to push around the speakers, subwoofer amplifier is the one to push, so that the total area occupied by too much, and the use of 5-channel power amplifier, an amplifier can solve the problem. 4. Multi-X card power amplifier: the unique X card for the power amplifier provides a wide range of sub-audio options: high-pass, band-pass, low pass, or even super-audio filter. 5. E-sub-type audio power amplifier module: The control module allows you to select what kind of signal would go to the power amplifier power amplifier and RCA output, selected by the required frequency and at the sound point. Through the replacement of modules, can become a power amplifier using a variety of power amplifier. Here, we choose only a brief introduction to some common sense tips power amplifier, it is necessary to the practical application of specific, but also must pass a professional system design, installation and so on, to get the perfect sound system.