The amplifier is one of the main nodes in the systemauto sound. With the help of it you can make the speakers work much more efficiently. For all those who are not indifferent to high-quality sound, the selection of amplifiers should be taken very responsibly. An equally important system that forms a high-quality sound is a car amplifier for a subwoofer. There are different types of these devices. You can also assemble the amplifier yourself. Let's find out how to choose the device so that it really pleased the hearing.
In most car radio already availablebuilt-in multi-channel amplifier. And for many drivers, this system is completely suitable. Some even do not change the standard sound in the car at all for years. But there are also those who like that the music in the car sounded qualitatively and loudly. In this case, we can not do without an amplifier. A car subwoofer without an amplifier will not give the desired effect. Such equipment will improve the performance of acoustics, regardless of the quality of the head unit.
The car amplifier for a subwoofer included in an acoustic system, gives several serious advantages. With it, you can increase not only the sound power, but also its quality.
Very often autoacoustics are acquired afterinstallation of the head unit. If the selected speakers, as well as the subwoofer, are of high quality, they will need more power at peak performance. Standard radio can not provide this. Therefore, they acquire a separate car amplifier for a subwoofer. This decision gives a good result.
There are several types of this equipment.So, mono amplifiers, or monoblocks, are intended only for low-frequency sounds. We can also highlight two-channel solutions. They are used in the absence of rear speakers, when there is only a front speaker. Three-channel amplifiers allow you to connect a subwoofer. Well, the most expensive solutions are four-channel. These models allow you to amplify the sound for all acoustics.
Multichannel devices are also capable of reproducing low frequencies, but it is difficult for them to cope with a small impedance. Amplifiers quickly overheat when the subwoofer goes to full capacity.
Monoblock technically - the same device asmultichannel devices. However, single-channel models have certain characteristics that analogs do not have. What does it mean? Monoblock has only one channel and is designed to enhance low-frequency bass. The load on which these devices are designed, most often has a resistance of 1 ohm. If this condition is met, high output can be obtained at the output. At the same time, the load on the on-board network will be minimal. For resistances of 2 Ohm and 4 Ohm to acquire a candy bar does not make sense.
If for amplification of a sound all attention is paid tosound quality, then in the case of subwoofers, the main characteristic is power. It can be of two different types. This is the maximum possible (or PMPO) and nominal. The inscription "PMPO mono" is seen on the case. This parameter indicates the total power for all channels inclusive. The PMPO should not be oriented - the numbers serve only to make the devices better buy. In practice, this figure does not matter. Another type of power is nominal. It is recorded in the technical passport. Reviews say that it is this characteristic that should be guided when choosing. This parameter should be indicated when the SOI is less than 0.1 percent and the voltage is 14.4 volts.
Reviews say that, in addition to power, it is worthpay attention to the frequency range. The parsing should not be too big. Serious manufacturers make values from 15 to 350 hertz. The amplifier class can be "AB" or "D". The first are analog amplifiers with good sound, but little efficiency and low power. The latter are powerful, with high performance. But judging by the reviews, such devices have a poor sound quality.
Another criterion is the number of channels.Monoblocks are very expensive and rare. They can be seen only in professional audio systems. The class of such monoblocks is "D". Dual-channel models are suitable for a subwoofer, designed for resistance of 4-8 ohms. The connection scheme of the car amplifier and the subwoofer in this case is of the "Bridge" type.
To build a system, you need an amplifieroutput power, as well as a voltage converter. They can be done on their own, but it's very long. You can simply purchase the finished items in the store. Then you can go directly to making an amplifier for a car subwoofer yourself.
For the device you need two channels, and the amplifier -single-channel. How is this corrected? Corrected this by connecting two channels of the radio with the help of an adder. Then the sound signal will be filtered - frequencies from the range of 16 to 300 hertz will disappear. Then the signal goes to the filter. The latter removes frequencies from 35 to 150 Hertz.
Often it turns out that there is a subwoofer withamplifier, and in the car they can not be operated. There is a way out - to put the equipment home. How to connect a car subwoofer with an amplifier at home? The amplifier has connectors for the input signal and outputs for connecting the speaker system and the subwoofer. They are connected by "tulips". They are shown in the photo below.
So, we figured out how to connect the carsubwoofer to the amplifier. The type of connection depends on the number of channels of the amplifier. Often, the installation is carried out on a bridge scheme, which is indicated in the photo in the article. In the case of a two-channel amplifier, the subwoofer is connected to both channels. The installation of a condenser is not necessary.
