When the user selects the speaker according to his or her preferences and economic conditions, the next step is to perform a series of tasks such as setting, installing and debugging the speaker. Since the audio-visual room has a set of strict specifications in the installation, positioning and debugging of the speaker, it indicates that the user can only achieve the desired audio-visual effects by following these specifications. Now I introduce some suggestions for the installation and debugging of the audio-visual room speakers.
To accurately measure the acoustic value, first measure the interval between each speaker and the ear (generally the interval between the tweeter and the human ear), and input the measured value into the av amplifier. The user should use the sound pressure meter to measure the output sound pressure of each channel at the listening position, and independently adjust the output level of each channel in the av amplifier according to the reading, so that the sound pressure of each channel reaches 80dB. Reference sound pressure value. Then the speaker configuration is basically completed.
After completing the above steps, basic debugging has been completed for most users, but for those who are looking for better sound effects, it is also recommended to use an equalizer to correct the frequency response curve of the room. This is due to the reality. The frequency response curve of most listening environments is not ideal. Although some people think that adding an equalizer will affect the sound quality, if the room's frequency response curve is not ideal, it will seriously affect the overall sound balance, and finally the overall sound effect will be worse. So when the listening environment is relatively unsatisfactory, using an equalizer should be a good choice.
Seeking professional help Before using the equalizer, the first condition is to understand the frequency response curve of your room. At this time, you should look for a professional to help you measure the frequency response curve of the room. Then, according to the room frequency response curve, the corresponding attenuation or gain is made on the equalizer. However, it should be noted that the equalizer should not be excessively trimmed. This is because adjusting the gain of the corresponding frequency band in the equalizer actually increases the output level of a certain frequency. If a certain frequency is adjusted too much, it will cause the amplifier to burn out due to the excessively large front end. , so be careful when adjusting. It is best to turn to the help of professionals with years of practical experience.
It is worthwhile to make a reasonable reminder of the accurate position of each speaker. Consumers must use the software they know and continuously mediate the Speaker System through actual listening to achieve the best audio-visual effect.
The subwoofer is mainly used to make up for the low frequency limit of the main speaker. At the same time, it can also increase the low frequency energy. Therefore, the consumer must set the low frequency crossover point of the av amplifier before using it. When setting the crossover point, it should be set according to the selected speaker. The user must set the crossover point of each channel according to the low frequency response of each speaker. Once the crossover point is configured, the subwoofer can be placed. Since the low frequency below 80hz is almost non-directional, in theory, the subwoofer can be placed anywhere in the room. But in reality, consumers need to try to place the subwoofer in different positions in the room to try to find the best placement point. In general, consumers can place the subwoofer in front.
The main points of the audio audition The user should listen to the uniform sound of the speaker sound during the installation and installation, which means uniformity from the bass to the high-pitched sound in a wide frequency range. But in fact, it is difficult to judge the tone color as a whole; in reality, it is difficult to determine the outcome of the tone in a unified way, and it has to be decomposed into the following four aspects to describe.
The intermediate frequency is rounded. This part specifically listens to whether the IF part of the vocal is contaminated by the tone of the speaker, which is a common defect of the speaker.
Low frequency / low frequency is abnormal. This situation is easier to hear, the usual sign is that the sound is buzzing or there is a floating sound.
The fullness of the low frequency treble. People often use collective string performance to test the performance of this aspect, specifically whether the sound of the stringed instrument is sharp or dry or too sweet. This has strict requirements for the listener, and requires a certain sense of music and appreciation of experience. At the same time, listen to a few more discs to ensure that the appearance of poor sound quality is not caused by the record itself.
High frequency is clear. There is hardly any sound in most music that exceeds 13 kHz. If we do hear the sound of this frequency, it will only be a flash.
It won't be a tone. Listening to jazz or rock slaps is an easy way to master this sound. Pop-high rides combine jazz and rock, and recording natural recordings is an excellent test material that includes clean, repetitive momentary treble. You should concentrate on listening to each of these momentary trebles to see if it is dull, too sharp, and blurry.
In short, the audition standard of a good speaker should be: high-frequency slender and smooth, not too harsh, medium-frequency full and bright, low-frequency, solid, clean, flexible and full of volume.
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