table of Contents: The first chapter of the home theater audio debugging full analysis of the speaker wiring debugging The second chapter of the home theater audio debugging full analysis of the subwoofer settings Chapter III Use of Sound Analyzer for Full Analysis of Home Theater Audio Commissioning The fourth chapter of the home theater audio debugging full analysis of the power amplifier configuration The fifth chapter of the home theater audio debugging full analysis of the impact of the power supply The sixth chapter of the home theater audio debugging full analysis of the two-line crossover The seventh chapter of the home theater audio debugging full analysis of the top ten lies in the audio industry ◠Lie one: lies about the wire Logically, this lie should not be used as a starting point because the wire is an accessory and not a major audio component. But this is the biggest, most despicable, most irritating, insulting lie, and the most lie in the field of fever. So I have to put this in the forefront. The lie is that high-priced speaker cables and signal cables have better sound than standard or general wires. This lie has been debunked, ridiculed and refuted again and again by honest authorities in the sun. But many innocent people can't tell. (The following pictures are from the Internet) The simplest fact is that the parameters of the three wires, impedance (R), inductive reactance (L) and capacitive reactance (C), are the only parameters that can affect the performance in the acoustic frequency range. The signal does not know whether it is being transported by expensive wire or by cheap wire. Of course, you have to pay a price for a well-worked plug, shielding, insulation, etc., to ensure reliable and stable operation of the wire. There is also a need to pay attention to the wire should not be too long, to avoid excessive impedance, excessive signal attenuation. However, in the basic electrical conductivity, a pair of high-quality hangers scraped off the ends and is no worse than the magic wire of $2,000. The same is true for the 16-cent electric light line of 16 cents. Skyline wire is one of the biggest scams in consumer electronics. It’s really frustrating to see almost all audio publications timidly surrender to wire manufacturers. A fever audio company called Pear Cable has launched a top-of-the-line speaker line called Anjou, which costs $7,250 for a 12-foot (about 3.5-meter), and even super-fans are shocked by the price. James Randi used to be a famous magician. Now he specializes in exposing various pseudo-science or spiritual events and super-powerful characters. In 1999, the domestic Sima Nan rewards the special function person to cooperate with his foundation. This time, he once again offered a reward, saying that someone can prove in the blind test that this high-priced audio cable can bring better sound quality than the ordinary "monster line" (although we think the monster line is already expensive enough), it can take away 100 Ten thousand U.S. dollars. It is reported that the pear company has accepted the challenge. The person to participate in the test will be a fever audio magazine writer Michael Fremer. Adam Blake, CEO of Pear Cable, said that Michael Fremer first contacted and accepted the challenge, and that he would benefit if he received the reward. But what is the end result? I can only tell you that this challenge has not ended, and the report ends here. A little bit of an anticlimax, and for the blind test, we will continue to introduce this more ridiculous scam in the next few points. ◠Lie 2: The lie about the electron tube This lie is also a peripheral issue, because in this silicon age, the tube has been irrelevant to the mainstream. In the Hi-End audio market, this is a general in-depth lie. It’s unbelievable to count the proportion of pages in the high-end audio magazine’s amps, but that’s the truth. Of course, the inside point is that the amplifier is more advanced than the stone machine in audio applications. Don't you believe it. The electron tube is very suitable for radio transmission, microwave ovens and the like. However, at this turning point in this era, this is not the case for some products. For example: power amplifier, preamp and CD player DVD player. Is there any problem with the tube? No, really... Is there any problem with gold teeth? Is it the front door? No, this is just another more attractive option. In an audio device, the tube can do it, the transistor can do the same, and it can be done better, at a lower cost, and with higher reliability. Even the best level of amplifier amplifiers in the world is higher than the equivalent level of transistor amplifiers, and the amplifier needs more maintenance during the life of the machine (changing the tube, adjusting the bias voltage, etc.) The idiot design of the 8 watt single-ended three-pole tube amplifier is not counted because they do not have a similar transistor design. Regarding bile, this deliberate dyeing, the transistor system can also easily mimic this distorted sound if the designer wants to do so. Of course, there are some sophisticated audio designers who will consider using tubes, but this few successful special cases are difficult to lie with the e-tube merchants who advise you to buy obsolete technology. (I note: This article is open to question, the "distortion" tone of the tube is different from the transistor, I don't know if it can be artificially simulated by the transistor circuit) ◠Lie 3: The lie about anti-digital You may often hear someone say: "Digital sound is much worse than analog sound." "Digital audio is like a poor, newspaper picture made up of thick dots." "Nyquist sampling theorem is completely No, the CD's 44.1KHz sampling rate can't solve the problem of extremely high frequency band, because there is only two or three sampling points in one cycle there." "Digital sound, even in the best conditions, will dry up Tattoo." And so on. This is ignorant and deliberately misleading. Lies are rarely supported in the mainstream because digital technology has gained full recognition. However, this lie is still circulating in the non-mainstream of some audio worlds, the Hi-End audio salon that has not been reborn, and all kinds of swaying listening rooms. 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