How do subwoofers produce bass?
Subwoofers are speakers that enable a sound system to reproduce accurate and powerful low frequencies. They are staples of sound systems in dance clubs and movie theaters, and have been gaining popularity in home-theater systems.FunctionAs with any speaker, a subwoofer’s job is to convert electrical signals to acoustic signals that can be perceived by the ear; however, unlike standard drivers and tweeters, subwoofers are specialized to accurately recreate low-frequency waves (20 to 200 hertz).CrossoverBefore the electrical signal is sent to the subwoofer, it passes through a crossover that splits audio signals into frequency bands. The crossover only permits the low frequency bands to reach the subwoofer.InsideWhen the electrical signal arrives at the subwoofer, it charges an electromagnet which, in turn, drives the speaker cone back and forth. The diaphragm that is attached to the cone creates the sound waves, which are what the ear perceives (because of the mass of subwoofers’ speake
