Technical analysis and test of loudspeaker reliability

1 Introduction In people's daily activities, the reliability of products is often involved. However, the birth of the reliability discipline is not long. China has established a reliability test base since the mid-1910s, which has promoted the reliability process of domestic components and laid a good foundation for the widespread entry of domestic components into the world market. .
The country has become a big speaker manufacturing country, but has not yet become a horn speaker manufacturing power. With the rapid increase in production, quality and reliability still need to be improved. In fact, the reliability of the speaker horn is an important feature of the high-end products. For this, some speaker manufacturers are not enough to understand, and the concept is also blurred. Therefore, we must reverse the emphasis on horn loudspeaker performance index design, ignore the tendency of reliability design, and fully understand the connotation and significance of reliability.

2 Loudspeaker reliability test Because the speaker user range is very wide, the test method of speaker reliability is similar, but there are some differences in test stress and failure criterion. Therefore, the author mainly makes the test purpose, test stress and failure criterion. discuss.

3 Loudspeaker reliability test design In order to evaluate the reliability of the product, a reasonable test plan must be adopted. Different test plans will produce different results, and mutual questioning is not comparable. Sometimes in order to find out the problem as soon as possible, it is necessary to carry out accelerated test or ultimate stress test. When doing these tests, it is necessary to pay attention to the increase of stress and not to destroy the original failure distribution law, otherwise the result of accelerated test or ultimate stress test is suspicious. The reliability test design shall include the provisions of the test sample, the determination of the test conditions, the determination of the test cut-off time, the determination of the measurement cycle and the determination of the failure criteria.

4 Conclusion Reliability discipline and reliability physics are mature subjects, and there is still a lot of research space in terms of reliability. Loudspeaker reliability technology should be used throughout the life of the loudspeaker, and reliability work during the design and manufacturing phases of the product is important to improve the inherent reliability of the product. Before conducting reliability testing, the speaker manufacturer may need to communicate fully with the user to facilitate the smooth implementation of reliability work.