功放的工作原理（The working principle of power amplifier）The working principle of power amplifier央求是什么意思
A simple sound system, including sound source, power amplifier and speaker, is indispensable. The quality of the devices basically determines the quality of the whole system. Among them, the power amplifier as a sound system power, in the sound source and speakers play a role in the bridge.
馒头的制作过程The working principle of the power amplifier is very simple, and intuitively speaking, it is to amplify various sound signals played by the sound source to drive the speakers to make sounds. From a technical point of view, as a current amplifier modulator, which changes AC to DC, and then by the sound signal source playback control, the current of different sizes, different transmission frequency according to the speaker, so the speaker is issued the corresponding size and frequency corresponding to the voice. Considering the power, impedance, distortion, dynamic and different range of u and control and adjustment function, different amplifiers have different signal processing, line design and production process. The traditional power amplifier has experienced decades of development, there has been no special classification, until in recent years with the development of audio and video playback device and video software is rich, so many manufacturers bad on the traditional audio power amplifier, with reference to real cinema sound playback features, design and production of integrated the different characteristics of different types of technology the power amplifier, 冬天里的温暖
people called it the AV amplifier, accordingly will be simply ud to enjoy the music known as pure music amplifier power amplifier. According to the
班会课主题demand of current sound consumption, the amplifier in civil acoustics has been basically defined as two major categories, namely, pure music amplifier and home theater AV power amplifier.
Pure music power amplifier
Pure music amplifier design emphasizes the minimum signal distortion, faithfully showing music scene, playing and recording skills and details, in order to satisfy the requirement of people to enjoy the best of music, it is often said that the Hi-Fi. In design and production, the requirement of pure music power amplifier is extremely strict. Reasonable collocation of high-quality pure music amplifier and speakers with high fidelity music, music can let many people have been infected, which is why in the home theater be in full swing today, there is still reason to pure music sound many people with higher cultural obsd, and even a lot of people initially pursued the trend of AV have a certain understanding of sound, and start to enjoy Hi-Fi music, it shows the charm of a Hi-Fi.
Pure music amplifier of high quality is not entirely by its technical indicators are determined, not simply look at the power it marked how high, how wide frequency respon and low distortion, so, sh
ould pay special attention to the design and production process and the clear solution of music. For example, technical indicators are not too high than many amps sound amplifier transistor. In addition, the pure music amplifier also pays particular attention and reasonable collocation of the sound box, push a good speaker amplifier can not push B good speakers, should refer to their work type, impedance
characteristics, nsitivity and the output current in the actual collocation, and the actual needs of the audition. Here to introduce two very cost-effective pure music amplifier, for your reference.
Ya Jun (ARCAM) ALPHA 5 power amplifier. Have a fever to sound slightly familiar with the people must not be on the production from Britain's "Ya Chun" feel strange, although it is small and thin appearance is not surprising, even some dull and stingy, even in an exhibition a few years ago everybody on such a small amplifier can drive speakers have a fever skeptical, but do not expect sound performance of it, but when it is calm on the high ropes to promote Tianlong speakers, all for its little body was so impresd by the good performance, "Ya Chun" fame is more and more big. The ALPHA ries power amplifier is in the original DELTA ries bad on the improved after the launch of the models, design using pure class structure, in order to reduce the signal distortion, the internal circuit is very simple, component model also does not have what special place, but due to th
e production process and material quality requirements are very strict, so even emingly simple ALPHA ries power amplifier, arcam has excellent sound quality. In the actual audition, arcam ALPHA5 and produced in the same company with Tianlong 607 (source using the arcam ALPHA1 CD), it can be said that the sound is almost perfect, especially in the appreciation of strings and vocals, the resolution of ALPHA5 makes full advantage of Tianlong speakers list, playing Vivaldi "four asons", the violin every note sounded clear, not all threads neatly tied up, some kind of a power amplifier "fried" taste; with "Cai Qin song" audition, every breath and articulation singers are very clearly demonstrated, intimacy,
and this CD style quite well. Although ALPHA5 8 ohm per channel only 40W output power, but as a process of English class a power amplifier, a high level of most good speakers and there is absolutely no problem, can be smooth and clean in the music climax,
Absolutely clear-cut. At the same time, ALPHA5 only 3000 yuan price, but the comprehensive advantages of the transistor and power amplifier, really can be said to be the value of the equipment.
PMA-890DG (DENON) power amplifier. In veral famous brand power amplifiers produced in Japan, the Dragon amplifier is well known for its abundant power and sound quality, among which P
MA-890DG power amplifier is a product with a high fever. In the design, DENON PMA-890DG successfully solves the problem of a high efficiency and high power amplifier, the output power per channel in 8 when do 110W, really is the breakthrough on the technology; at the same time, PMA-890DG t up a digital input terminal, corresponding internal design of 20Bit decoder, it is enough to e DENON in quality the performance of the heart; in addition, it weighs 20 kg weight also let you have to believe it's material quality. In appearance, DENON PMA-890DG will let you e it first love: the extraordinary style, both liberal and dignified, placed in what kind of family is an ornament, it calm body to date feeling. In the audition, u it to push the power of a parity speaker EL80, playing the famous TELARC recording of Tchaikovsky's "1812 Overture", whether it is the beginning part describes the peaceful life soothing chapters in music, or described in the middle part of the cross Russian national music and the "Marillai" melody the cruel war
免费模板个人简历scenes, DENON PMA-890DG had more or less, it needs a gentle gentle, violent when it needs strong, especially in the music at the end of the victory of the war of the grand celebration performance, DENON PMA-890DG showing more and more expert, the impressive and powerful bell real guns. The end of a song, in the sigh of Chai charm of music at the same time, but also can not help but sigh DENON amplifier full of confidence. Although the price of $4000 is slightly more expensive than the wage earner, DENON PMA-890DG is good for people who love music.
AV power amplifier孕妇可以吃什么
AV power amplifier is a kind of independent video and audio control equipment bad on the traditional power amplifier. It usually includes power amplifier and signal control processing. The power amplifier principle and traditional power does not have what difference, but increas the number of channels, there will be veral amplifier together; the signal control signal processing part relates to the audio and video signal processing, decoding, signal processing and acoustic radio, monitoring and other functions. Visible, compared with the traditional power amplifier, AV power amplifier in the function has undergone a qualitative change, so strictly speaking, most of the AV power amplifier should be called AV center. The formation of the AV center to meet the modern family, play audio and video display in a variety of media and processing requirements, is indeed more in line with the people in the entertainment and enjoy the need, but also becau it is a multifunctional "center", so they can reach a high level in all parts of the performance is not easy, especially the power amplifier AV center, most of the product quality performance欢迎你英文
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