What does the phase of the sound system mean? What is the best sound quality?

In the sound system, the tweeter and woofer connection phases must be the same.

Trumpets are divided into several different instruments, a wind instrument, thin at the top and thick at the bottom, mostly made of copper. The other is a modern electroacoustic element, which is used to convert electrical signals into sound, also called loudspeakers. It can also be used to describe a person who advocates and propagandizes for others.

Wind instrumentsWind instrumentsWind instruments, thin at the top and thick at the bottom, with the mouth at the bottom open to amplify the sound.

There are many classifications, generally according to the way of pronunciation, divided into blown hole air sound instruments, single reed air sound instruments, double reed air sound instruments and lip reed air sound instruments, collectively known as woodwind instruments, although many instruments have been made of metal, rubber and even synthetic materials. In orchestras and marching bands, this group of instruments is called the woodwind group, and the corresponding lip reed air instruments are called brass groups (in fact, they are also made of brass).

The horn we often talk about is generally the horn in the electroacoustic element, and this entry mainly introduces the horn in the electroacoustic component. Wind instrument horns, please check the common name, suona, horn, trumpet.

There is a slight difference between the phase of the tweeter and the woofer, with the tweeter having a large amount of current and the woofer having a small amount of current.

1) The vibration direction of the sound emitted by the left and right groups of speakers in the sound field is just opposite, and the sound energy of the chaotic front stove between each other is offset by each other in the sound field, resulting in the phenomenon of short circuit, resulting in the volume of the replayed sound not reaching the due volume, the strength of the sound becomes poor, and the bass is turbid.

2) Due to the 180° phase difference between the left and right channels, the panning of the stereo replay is largely based on the phase difference between the left and right channels. Stereo theory tells people that when there is a 180° phase difference between the left and right channels, the listener will feel that the stereo sound image runs to the outside of the base two-tone box, and the position of the sound source is erratic, blurred and confused, and the unique sense of presence, space and sound envelopment of stereo is destroyed.

In order to prevent this phenomenon from occurring, the signal input terminals of some loudspeakers and the output terminals of power amplifiers are marked with red and black colors to indicate the polarity. Generally speaking, as long as the speaker cable is used to connect the red end of the amplifier with the red end of the early morning box, and the black end of the amplifier is connected to the black end of the speaker. But not necessarily, because in the production process of the speaker, it is not excluded that the signal line is wrongly connected, and the terminal block of some speakers has been reversed when it leaves the factory; There is also a reason that may lead to an increase in the inversion of the speaker.

That is, modern professional speakers and power amplifiers have generally used the neutrik plug as the audio power signal transmission interface, which is not easy to distinguish the polarity when connecting, and the polarity of the wire may be reversed if it is negligent.

Use a No. 5 dry battery.

Connect the horn at both ends to see if the horn paper cone pops out or earns.

To measure and judge the horn phase, a mechanical multimeter can be used.

If the horn paper cone is pushed forward, the black pen (because the mechanical multimeter battery is connected to the black pen) is connected to the positive pole of the horn, and the red pen is the negative pole.

Let you have a professional level of MECA international referee listening skills - the way to listen to the horn phase with your ears.

Phase is another fundamental quantity of electricity and acoustics, and is a parameter used as a reference for time, and its unit is degrees, generally referred to as 0-360o. When a speaker is working, it pushes or stretches the air around it, and this pushing and stretching is related to the positive and negative poles of the signal. When this push or stretch produces sound waves, when the sound is produced in the listening space, whether the phase between the various speakers is unified and coordinated, which is the first point to ensure for the modification of car audio, in the audio system, the change of sound quality has a great relationship with the phase of the sound signal.

A complete cycle of sound waves, including pushing and stretching, is equal to 360 degrees.

It is the plus or minus of the sound "Horn"...How to listen to it This is to listen more The sound quality is better** and your actual combat + experience Come on, I'm still an apprentice, and I know everything you know.