The BlackAir Hybrid 12 Twin Active is a world first, combining both Bandpass and Vented enclosure technology in an active Twin enclosure. Pushing the boundaries of audio innovation further than ever before, the Hybrid 12 takes bass performance to the next level with an enclosure capable of both super deep bass and tight accurate bass on demand. An active enclosure with 2x built-in amplifiers and master pre-amp, the Hybrid is built for Loud, Deep, Hard Bass. The BlackAir Hybrid 12 is not about compromise, you no longer need to choose between tight accurate bass and hard deep bass, finally you can have it all… Bandpass The Bandpass section provides the Deep Bass. In a Bandpass design the subwoofer is placed inside the enclosure where it can be worked much harder, with increased pressure on the front and back of the cone. The Bandpass section works the BlackAir subwoofer much harder with greater efficiency resulting in considerably more volume, and greater bass presence for an overall bigger, deeper bass sound. Vented Bass Reflex The Vented Bass Reflex section gives the Hard Bass. The aluminum clad letterbox port is precisely tuned to deliver one crunching low bass coupled with brutal punch, and paired with the BlackAir Black Edition 12” subwoofer gives increased bass delivery of up to 3dB over the standard BlackAir Vented enclosure Also comes with a bass controller to let you control each half separately from your seat!!