The new ASCENDO The12 SUB ACTIVE VENTED subwoofer sets the standard for bass output, low distortion, and affordability. With chest thumping bass that plays deep down the The12 SUB AV subwoofer unleashes cinema level volume, with the ability to convey and articulate the subtle nuances of music. 12" Woofer: At the heart of the powered subwoofer is a composite cone driver with a very stiff sandwich cone paired with a large throw rubber surround. The The12 SUB AV driver was developed from the ground up, with a design focus on achieving output, accuracy, dynamics, and linearity, while minimizing distortion. Sophisticated computer modeling and measurement techniques are used extensively in the powered subwoofer design process. The woofer is enclosed in a cabinet made from HDF material outfitted with massive internal bracing and dual ports to minimize port turbulence.