This Series Of Speakers Is Optimized For Loud Front-End Clarity And Performance. AB has developed a new type of highly efficient driver aimed at delivering high levels of clean output from stock speaker locations. The SQ midrange speakers feature performance refinements like vented backplate motors, long fiber cone stock, and Kevlar cone bodies resulting in a smooth extended frequency range. The low moving mass design coupled with tight motor tolerance produces ultra-fast transients and high output to keep up with any subwoofer system. These speakers are manufactured with a paper woofer cone and reinforced with carbon fiber allowing this speaker to deliver a strong low end that is detailed and free of buzzing and distortion if properly installed.  It has an RMS rating of 150 Watts and a 300 Watt max power handling giving your system an impressive sound