About the introduction of car power amplifier
The car power amplifier is the audio power amplifier in the car audio-visual system. The power amplifier is abbreviated as a power amplifier.
Introduction
The role of the car amplifier is to select and preprocess the audio input signal and to amplify the power so that the electrical signal has the ability to drive the speaker. Car power amplifiers are slightly different from those in ordinary home theaters. Because many car hosts integrate power amplification functions to play a pre-amplification function, car power amplifiers are sometimes called post-amplification, which means that they can be connected and amplified. High-level input over.
The amplifier is an indispensable component of a good sound system. The power amplifier on the main unit often cannot really amplify the sound current, so if you want to have a good music experience, you must install an amplifier. Generally speaking, the power of the power amplifier is greater than the power of the speaker. Many car owners think that installing a bass amplifier is just to have a shocking effect. In fact, this is ignoring the characteristics of the car. No matter how high-end cars are, there will be noise. The bass part of the music released during driving will be different to different degrees. The roar is mixed, and the addition of a bass amplifier can increase the reserve power, reduce noise interference and reduce distortion.
Since the car amplifier is connected to the host and the speaker, the coordination between the host and the speaker must be considered when purchasing the amplifier. It is directly related to the effect of music playback and the life of the equipment. The matching of car power amplifiers mainly includes impedance matching and power matching. The power amplifier has a great influence on the sound quality. Generally speaking, the power amplifier and speakers of the same brand are better matched, which should be considered first; if you choose brand-name car speakers and power amplifiers, you can generally match them according to their technical parameters; for unknown brands, It's best to actually pair with the audition.
classification
Power amplifiers can be classified according to different uses:
1. Some car power amplifiers are specifically designed to promote woofer speakers, such as Kenwood KAC-PS401M (14.4V, 4 ohms), with a maximum power of 1200W x1. Built-in infrasound filter, eliminating the need for external filters.
2. Power amplifier with equalizer, such as Sony XM-604EQX. The speakers provided by EQX have a 5-band equalizer, which can be adjusted according to personal preference or different compartment space. Each EQX series has 5 kinds of frequencies to choose from.
3. 5-channel power amplifiers, such as Sony XM-405EQX, Kenwood KAC-859, etc., usually use 2-channel or 4-channel power amplifiers to drive the front and rear speakers. The woofer is driven by another power amplifier, which occupies too much area. Using a 5-channel power amplifier, a single power amplifier can solve the problem.
4. Multi-chip X card power amplifiers, such as Laifu punch 400.4. The unique X card provides an almost infinite variety of partial tone options for the power amplifier: high-pass, band-pass, low-pass, and even super audio filters. It can play a role of one to ten.
5. Electronic crossover modular power amplifier, such as KICKER ZR360. These control modules allow you to select which signal will go to the power amplifier and the RCA output of the power amplifier, and select the required frequency and crossover point. By replacing the module, a power amplifier can be turned into a diversified power amplifier.
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