difference between sealed and ported subs
Bandpass boxes are a compromise between the sealed and ported boxes. They feature a dual-chamber design, where the back chamber is a sealed enclosure and the front chamber is a ported one. Bandpass enclosures are best suited for some types of music such as : rap and hard rock. P.S : Bear in mind that not all subwoofers are meant to be mounted in bandpass enclosures.