Sowter’s interpretation of the original Williamson design using more modern materials. This means a higher grade of core material, better copper and inter-winding insulation. Lower distortion and longer life. Highest grade low loss (M6) grain oriented silicon iron core for minimal distortion. 14 interleaved winding sections to maximize bandwidth and ensure clean transient response. Two chamber bobbin to ensure full geometric balance. Low copper resistance to minimise losses and maximise loudspeaker damping. 4 separate secondary windings (See below) for optimum matching to load without the use of tapped windings which can reduce HF response.