See if there is a microphone, if there is a microphone.
Check if there is anything wrong with the stereo.
Sometimes it happens when the horn is broken.
There is also sound feedback, that is, the sound of the speaker reaches the microphone, and the sound of the microphone returns to the power amplifier, and this cycle produces howling. Keep the microphone away from the speaker.
This situation has something to do with the sound quality. So before choosing a sound system, you must do your homework, listen to other people's suggestions, or listen directly. I will give you some good advice. Let me talk about hivi and Shanshui, two models that can be used to build a party. Many friends told me that the workmanship of some models of hivi needs to be strengthened. In addition to the metal shell, there are many cases where the corners of the box fall off and tilt, which needs attention. The cost performance of landscape acoustics is relatively low, which can only be said to be a little higher than the entry level and a little lower than the level of prospective enthusiasts. BT-audio Red EX home theater is very suitable for you. Red EX Cinema belongs to the American sound and sound stage department. Using the world-leading integrated loudspeaker unit technology, the treble can achieve 100% distortion-free, and at the same time, it can obtain amazing sound field effect. While keeping the treble transparent, sound stage is exquisite and broad, with obvious contrast between dynamics and dynamics, and the overall sound stage has a strong sense of energy, which can be called a classic in sound stage cinemas.
Mahogany and leather are used to make speakers gorgeous and elegant. The color of the cabinet is mainly red and black, and Chinese and American styles are perfectly integrated, giving people a magnificent and profound sense of stability from the whole to the part, highlighting the identity of the speaker owner as a successful person.
I hope my answer can help you.