Bass reflex tubes for bandpass enclosures and bass reflex enclosures

Bass reflex tubes - also called aeroports - are required for bass reflex enclosures or bandpass enclosures. These are a special type of enclosure that was developed specifically for subwoofers and bass speakers. They are not closed, but are provided with a bass reflex channel. This bass reflex channel directs the air between the inside and outside of the enclosure so that sound waves in low frequency ranges can be reproduced more amplified. . The sound waves emitted backwards are used to amplify the bass. In this way, the air volume within the loudspeaker housing, in conjunction with the bass reflex channel, forms a vibrating system. The result is reflected in a significantly increased sound pressure level in the lowest octaves, and the power bandwidth can increase by more than an octave.