Car audio as a mobile concert hall to become a solitary journey to enjoy. Whether or not the car audio enthusiast, the face of these full of metallic equipment will be its unique magnetic properties are attracted to. But perhaps for most people, how to buy satisfaction of the Car Amplifier equipment is a problem.

Here we will introduce some of the power amplifier in a few selected tips.

The same benchmark to determine the power amplifier

Power sound system is the most important parameters, that sound system with a load capacity. This is why we should pay attention to when buying the first place. But if all manufacturers are using their different performance measurement baseline to identify the product, the lack of sufficient knowledge is often difficult to make an objective comparison. Amplifier is also true, in view of the identification power amplifier should be aware of the following three points:

First, the battery voltage.

Car battery voltage is constantly changing, for the two common logo: 14.4V/100W, 12V/100W amplifier power is two completely different shows. As the car in motion the process is basically the voltage at 12V or so, so the 12V voltage state of the measured power value closer to the truth. Voltage of 12V and continuous basis in order to identify the power amplifier reaches more than 12V can be achieved when more power.

Second, the harmonic distortion THD.

In comparing continuous output power amplifier is required in the same (or relatively close) THD value under. The value of THD under different test out the sound difference is very obvious, sometimes the identity of the maximum power is high, but most likely it's distortion and noise is also high. Therefore, check the maximum power of identity should also be aware of their value of THD.

Third, the frequency range.

Amplifier continuous power output should be in the actual frequency range used for testing. For the power amplifier should be required to identify the full scope of testing only identifies a frequency power value has no meaning.

Benchmark in determining the same, since we can compare the power of the amplifier. Typically, when the sound system in the general purchasing power output to follow the principles. The greater the output power amplifier, that they drive the speaker's ability is stronger. Speaker amplifier power should be larger than indicated power, small power if used in long-term use of high power output, easy to burn, can lead to poor sound quality, distortion and failure to appear.

Amplifier should have high-quality factors

Of course, relies on high-power text description can not be a better understanding of the power amplifier is good or bad. Quality of the amplifier must also be able to quickly reflect the music signal peak, while that corresponding to the powerful bass and low distortion / low noise conditions to provide a smooth output. To meet these requirements, you must have the following:

First, the good performance of the power supply. This is so key to sound amplifier. The power supply should be separated from the Department of the Ministry of amplification designed to reduce noise. Use of the large step-up transformer to improve stability of the current supply, and large capacitors, can more quickly respond to supply the necessary current amplification.

Secondly, the built-in equalizer parameters. Car audio and home audio are very different, the speaker of the installation location is very limited, the importance of sound regulation. In addition, head and sound effects to hide the windows and the installation angle of the subwoofer sound waves caused by confusion, wall mount speaker system will sound. At this time work is the parameter equalizer, it causes the sound waves on the crest, trough to compensate, adjust the smoothness of the sound field.