Plus Onecarbon-fiber woofer for the ultimate sound qualityThe Plus Onecones offer more space in the speaker cone than other speakers of the same size, allowing for stronger bass. While the high-end carbon fiber woofer material provides precision and clear musical character.Precise silk dome tweeterThe Club CSQ speakers have a precise, silk-dome tweeter that, as compared to the usually used W-cones, provides a wider and softer treble range, which never appears hard regardless of the output level.Adjustable tweeter output levelThe Club CSQ speakers have a controller for the tweeter output level of -3 dB or 0 dB for site-based optimization of system linearity.Unbelievable Y40 ferrite magnet for higher sensitivityThe Club CSQ speaker uses the Y40 ferrite magnet, which offers a higher sensitivity than the conventional Y30 ferrite magnets.Starfishtweeter mounting adapterThe Club 64CSQ component speaker system comes with the Starfishtweeter mounting adapter. The Starfish tweeter adapt