Read more KIT No.6 UTOPIA 2-WAY The N°6 is at the heart of this new offering, with the TBe tweeter this time associated to a all new 6.5″ (16.5cm) midbass, the 6 W2, which is not afraid to get down near sub territory with stunning authority. This kit lends itself to cars which have room for a 6″ driver and tweeter, which is the majority of modern cars. These three kits come with the Crossblock stereo filter, which controls and harmonizes the driver units. Thanks to no less than 4480 combinations of electrical adjustments, the Crossblock will allow the user to reveal the full extent of the Utopia Be performance. These systems are perfect for serious competitors and passionate audiophiles who like to control and adjust every aspect of the systems performance.