FTDA® (Fiber Torsion Damping, patent RU No.124834U) method rests on a principle of a conductor free floating in a viscous longitudinal fiber surround with high mechanical decrement. BRC conductors and filling cotton cords of a bigger diameter are twisted symmetrically 2x2 and tightened with the dielectric binding under a determined pressure. Introduced in 2005, this method remains unsurpassed for its intrinsic conductor damping. More of that, with FTDA® electro-dynamic noise, caused by conductor’s vibration and movement in the Earth’s magnetic field is minimized.
Natural cotton fiber was chosen as a damping medium because of its unmatched longitudinal strength and filling ability. Much air inside and between multiple cotton fibers decrease relative permeability and signal energy loss. Thanks to high inter-fiber torsion and low filler density mechanical vibrations, affecting conductors are absorbed by as much as 50 times. In effect, the widest dynamic range is attained, which in this case is only limited by thermal noise and thermoelectric contact potentials. FTDA® method is employed in our top-end Reference & Ultimate cables.
