Question: are 2 speakers louder than 1?
Answer: More air moved results to louder sounds and sound intensity doubles. ... 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. The human ear, to hear double the audio, needs an increase of 10 decibels.