Both the HCC-300 and HCC-600 use our already highly acclaimed “Anti Lobe Configuration” (ALC). This technology eliminates phase cancellation that occurs in standard centre channels. Phase cancellation is caused when the relative distance changes between two drive units in the overlapping frequency range. When you move just slightly to one side of a conventional centre channel speaker a complex series of wave additions and cancellations are set up causing a general deterioration of sound quality. We have eliminated this problem with some innovative new technology called “ALC”. “ALC” works by combining a scientifically calculated spacing pattern between speaker components with specially selected crossover frequencies. In this way we make affected wave lengths longer and proportional spacing shorter eliminating the margin for error. The HCC-300 is small and perfect for those circumstances where space is critical where as the HCC-600 is the ultimate full range centre channel.