Speaker Reliability Analysis:

Definition and Scope of Reliability The definition of speaker reliability is: “The ability of a speaker product to perform its specified functions under specified conditions and within a specified time period.” It serves as a post-production quality metric for speaker products, used to describe their susceptibility to damage and reliability during use. As user requirements increase, speaker structures become increasingly complex (e.g., car speakers), output power increases (e.g., PA speakers), and usage environments become more harsh (e.g., outdoor speakers), leading to a decline in the reliability level of speaker products. Additionally, the adoption of new materials, processes, or technologies can also increase the factors contributing to unreliability in speakers.

The “specified conditions” in the reliability definition determine that the scope of reliability is very broad. The reliability of a product is closely related to its operational state, usage conditions, and environmental conditions during storage and transportation. Conditions can be divided into two major categories: usage conditions and surrounding environmental conditions. Usage conditions refer to stress conditions that act on the internal components of the product, including various electrical stresses, chemical stresses, and physical stresses. Environmental conditions include temperature, humidity, air pressure, harmful gases, mold, salt fog, impact, vibration, and radiation, among other environmental stress conditions. In this sense, environmental testing also falls under the category of reliability testing. These stress conditions can be applied individually or in combination, and combined application will have a more significant impact on the reliability of speaker products.