Precautions for audio use

　　With the popularity of professional audio for film and television, more and more people are interested in the audio-visual field. As an audiophile, having a set of high-end equipment is important, but using them correctly is equally important. For now, among the average audiophile, there are some misunderstandings that should be avoided.

　　1. Put the equipment in the cabinet. Some people put the equipment into a custom-made cabinet for decoration and protection, which will make the sound turbid due to the latent vibration caused by the space in the cabinet, and equipment such as power amplifiers are prone to overheating and aging due to insufficient ventilation. If the speaker is mounted on the wall, the sound effect will become stiff.

　　Second, stacking equipment. Many people like to place video disc players, amplifiers, tuners, digital-to-analog converters and other machines on top of each other, which will cause mutual interference, especially the serious interference between radium cameras and power amplifiers, which will make the sound hard and create a sense of depression. The correct way to do this is to place the equipment on a speaker stand designed by the manufacturer.

　　3. There is no distinction between positive and negative power plugs. A good system for the positive and negative processing of the power plug, the sound level is clear and natural and smooth; the positive and negative are inconsistent or uneven, and the sound will be hard and rough.

　　Fourth, the wiring is not strong and unclean. If the sound of the system is dry and hard, one of the reasons may be poor contact, such as weak plugs, oxidation of the contact surface, dust or oil stains, etc., so you should check frequently to keep the contact surface clean.

　　5. Use marble or glass to carry equipment. The low density and high resonance of marble will affect the sound effect. The density of glass is higher than that of marble, but it is not thick and the resonance is more serious. Granite or granite can be used, especially granite, which has the highest density and ideal carrying equipment, but the thickness should be more than 3 cm.

　　Sixth, the placement of speakers is "according to local conditions". Some people have placed other furniture in the room, and placed the speakers to accommodate the furniture. The correct listening distance should be determined first, and then the speaker should be placed 1/3 between the seat and the opposite wall. The distance between the speakers is 0.7 times the direct distance between the listener and the speaker, and the height should be flush with the listener's ears and the tweeter. .

　　7. Improper wiring. When dealing with wiring, do not tie the power cable and the signal cable together, because the alternating current will affect the signal; neither the signal cable nor the speaker cable can be knotted, otherwise it will affect the sound; if the signal cable or speaker cable is too long, it can be shortened. Many signal lines are directional, make no mistake.

　　Eight, take it for granted to deal with the room acoustics. In addition to clear sound and sound insulation, what is more important is the treatment of sound wave reflection and refraction, which needs to consider the volume, size, firmness, and use of materials of the room. Z best effect.

　　9. Blind imitation. Do not proceed from reality, blindly imitate others. If people use long signal lines and short speaker lines, the effect is good. This is because the front and rear stages and the laser machine are balanced, and your equipment is not balanced. If you try to imitate it, it is difficult to achieve the same effect.

　　10. Self-deception. If the equipment plays a certain type of music well, but it is not ideal to play another type of music, this shows that the entertainment sound system has not yet reached the ideal level, and needs to learn more, listen more, and observe more to improve.

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