Hi-Fi is the abbreviation of English Hight-Fidelity. It is literally translated as high fidelity. It requires the audio equipment to amplify and process the various indicators of the sound signal without distortion during the playback process to restore the original appearance of the sound source. It is original and is used exclusively for listening to music: AV amplifiers, as the name A (audio) means audio, audio, V (video) means audio, images, so AV amplifiers are audio and video amplifiers that combine audio and video signal processing. Emphasis is placed on the atmosphere of the sound field, dedicated to home theater. Due to their different emphasis, these two amplifiers have different characteristics in terms of technical indicators, sound field atmosphere, number of channels, and circuit design:
1. Different technical indicators
The technical specifications of high-fidelity Hi-Fi amplifiers mainly include output power, harmonic distortion, signal-to-noise ratio, frequency range, rated impedance and damping coefficient, especially emphasis on harmonic distortion and signal-to-noise ratio; while AV amplifiers also have these Technical indicators, but more emphasis on channel isolation, delay time range, various sound field modes (DSP system, home THX system, Dolby AC-3 system) and other indicators, and AV amplifiers have more indicators on the video part .
2, the sound field atmosphere is different
The Hi-Fi function is designed with high fidelity in the way of sound reproduction. It pays attention to the signal from the signal source, which is mainly used to appreciate music, vocals, etc., and pursues the real effect of sound. The AV power is placed in the sound mode as the main design purpose, emphasizing the sense of position of the sound, simulating the atmosphere of the listening environment, such as cinemas, halls, churches, stadiums, studios, etc.
3, the number of playback channels is different
The Hi-Fi function is usually two channels when playing, that is, the signals of the left and right channels are amplified, and the left and right two groups of speakers are pushed to form a stereo sound field. The AV amplifier has 4-9 channels, which drive multiple speakers to form a surround sound field. For example, the Dolby AC-3 requires 5.1 channels (left, center, right, left surround, right surround, and subwoofer).
4, the circuit design is different
From the perspective of circuit design or circuit configuration, there are big differences between the two power amplifiers. First of all, the high-fidelity Hi-Fi power amplifier circuit is relatively simple, the signal processing program is small, only the combination of the amplifying circuit and the switching and adjusting circuit: the AV power amplifier has more decoding circuits and delays, reverberation circuits, etc. than the Hi-Fi power amplifier, and It is also responsible for amplifying multiple signals, resulting in high integration, complex circuitry, and many signal processing procedures. Secondly, the AV power is placed on the circuit structure as well as the video circuit.
The main difference between Hi-Fi amplifier and AV amplifier has been introduced to you. Since the narrative language is more professional and more abstract, I will give you a detailed analysis below. What is the disadvantage of using AV amplifier instead of Hi-Fi amplifier?
1. AV power is insufficient when playing a large signal source.
This can be seen from the product manual. The output power of the AV amplifier in the two-channel state is larger than that in the four-channel state. However, some manufacturers' specifications are the same. At this time, you can use a large dynamic range of music to audition, you can obviously feel powerless. This is because the total power consumption of the AV amplifier is large, the power supply reserves are not surplus, and the Hi-Fi amplifier is calm.
2, AV amplifier wiring affects sound quality
The AV amplifier sets a variety of video and audio ports, and accesses multiple sets of audio and video signal sources, resulting in many and complicated signal lines, which easily cause mutual interference of signals. In particular, the existence of distributed capacitance has the greatest influence on high-frequency audio and its harmonics, so that the original high-frequency components of the high-quality signal source are attenuated or interfered, so that the listener can not appreciate the high-fidelity effect.
3, the screen of the AV amplifier will also interfere with the sound quality
AV power amplifier pays attention to convenient multi-function operation. The panel is equipped with a large-scale fluorescent display, which makes the operation intuitive and vivid. However, the fluorescent screen is heated by low-voltage AC filament, and the character display is driven by the pulse signal, which will radiate a lot of electromagnetic interference to the surrounding. Affect the sound quality.
The difference between AV amplifier and HI-FI amplifier is mainly as above. Another point to note is that although I can give you the difference between many AV amplifiers and HIFI amplifiers listed here, the difference between the two amplifiers is not so obvious. The average person can't tell the difference between these two amplifiers. So JS took advantage of this and said the AV amplifier as a HIFI amplifier to raise the price. Therefore, when you purchase a power amplifier, you must choose a reputable merchant to trade.
Speaking of here, are you aware of the difference between the two, and what kind of amplifier to buy, are you determined? If you want to enjoy movies and TV shows, then choose AV amplifiers, if you have a soft spot for music, then choose Hi-Fi amplifier.
LED street lights achieve ultra brightness/luminance; energy-saving over 70%. Special modular design for theLens (independent modules) and high luminous efficacy, high CRI, easy for maintenance.Intelligent and isolated power supply (NS semiconductor and Japan Rubycon capacitor), reliable and stable; automatically reduce current against overheating working temperature
Led Street Light,Street Lamp,Led Lamp,Street Lamp Post
Yangzhou Beyond Solar Energy Co.,Ltd. , https://www.ckbsolar.com