The maximum sound level of a Bose speaker can vary depending on the specific model and configuration. Some Bose speakers are designed to produce relatively low volume levels and may not be able to reach very high decibel levels. Other Bose speakers, such as those in the company’s professional line of products, are capable of producing much higher volume levels and may be able to reach decibel levels in excess of 100 dB. It is important to note that prolonged exposure to loud noises, such as those produced by speakers at high volume levels, can cause hearing damage. It is recommended to use caution when operating any speaker at high volume levels and to wear ear protection if necessary.