Question: is 2 speakers louder than 1?
Answer: More air moved results to louder sounds and sound intensity doubles. Doubling sound intensity, however, does not equate to double the decibels. ... A 60-decibel sound is 1,000,000 times (106) more powerful than a 1-decibel sound. With that said, adding a speaker with a similar volume adds around 3 decibels.