The car amplifier is an audio power amplifier in the car audio and video system, and its function is to select and preprocess the signal of the audio input, and perform power amplification, so that the electric signal has the ability to push the speaker. The amplifier is an essential component of a good sound. The power amplifier on the main unit often cannot really amplify the sound current, so you must install the amplifier if you want to have a good music experience.
From a functional point of view, most of the current car amplifier products already have the following functions.
First, the electronic cross (Crossover)
There are three options for this feature setting:
FULL - full tone; HP: Qualcomm - only let the frequency above the crossover point (such as 80Hz) pass, this setting is mainly used for the middle and high speakers; LP: low pass - only the frequency below the crossover point (such as 80Hz) This setting is mainly used for the woofer. Some of them are also set to the adjustable crossover point, which can be set according to different system design, and some are fixed at frequencies of 80Hz, 100Hz and 120Hz.
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Second, the signal input (ineinput) selects two input modes: RCA signal (low voltage) and host speaker line (high level). In order to obtain good sound quality, you can choose RCA signal input (ideal frequency response and excellent signal-to-noise ratio, but only if the host has RCA output). If the host has no RCA output or retains the original car, only the tape is selected. A high level input amplifier. In addition, many amplifier products have one or two sets of signal output (lineouput) to transmit signals to another amplifier, which not only saves the cost of the crossover, but also guarantees excellent sound quality, because different merchants The approach taken when the signal output is not adequately distributed varies, and some processing methods can degrade the sound quality.
Third, the input gain adjustment (Gain)
This knob is used to adjust the input voltage of the amplifier to the optimal matching state with the signal voltage transmitted by the host to ensure that the sound will not be distorted.
Fourth, bridge output (bridged)
When the amplifier is bridged, the output power can be increased by a factor of two, making it more useful when needed (such as to push a subwoofer).
Five, tone adjustment There are quite a few products set with bass (Bass), high-pitched (Tweeter) adjustment, can be raised or attenuated at 45Hz, 100KHz respectively, the adjustment range is between 0dB-12dB, can make the replay bass more full ,deep.
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About Xing Haorui
Shenzhen Xinghaorui Technology Co., Ltd. mainly produces and sells home theaters, stage audio, digital power amplifiers, mobile audio, small appliances and other products. The company has an independent research and development team, first-class management staff, advanced production equipment and superior factory environment! After years of development, it has grown into a large-scale audio company in the industry. Its products are exported to the United States, Canada, France, Brazil, Argentina, Venezuela, Chile, Egypt and other countries and the Middle East and Southeast Asia.
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