An air core dry type power reactor comprising: upper and lower spider units (115, 115) each comprising a plurality of support arms extending radially outward from a central axis; a coil including a plurality of cylindrically shaped winding layers (125(1-m)) concentrically positioned about one another and with respect to the central axis, the plurality of cylindrically shaped winding layers (125(1-m)) including an outermost layer; and a double wall sound shield including two concentric roving cylinders, a first roving cylinder (112) and a second roving cylinder (112), the first roving cylinder (112) positioned against the outermost layer but detached from the coil by a first airgap (130) between the outermost layer and the first roving cylinder (112) to reduce a structure-borne transmission of an acoustic energy or attached by ductsticks to the coil, wherein the second roving cylinder (112) is placed at a distance from the first roving cylinder (112) to form an acoustic cavity between two double walls of the first roving cylinder (112) and the second roving cylinder (112), wherein the double wall sound shield further includes a plurality of sound absorbent panels (110(1-n)) to attenuate resonances of the acoustic cavity between the two double walls of the first roving cylinder (112) and the second roving cylinder (112), wherein each of the plurality of sound absorbent panels (110(1-n)) comprises a layer of sound absorbing material and each of the plurality of sound absorbent panels (110(1-n)) is separated from the first roving cylinder (112) by a second airgap (130), and characterized in that each of the plurality of sound absorbent panels (110(1-n)) comprises installation means and wherein each of the plurality of sound absorbent panels is attached to the first roving cylinder (112) by its installation means. upper and lower spider units (115, 115) each comprising a plurality of support arms extending radially outward from a central axis; a coil including a plurality of cylindrically shaped winding layers (125(1-m)) concentrically positioned about one another and with respect to the central axis, the plurality of cylindrically shaped winding layers (125(1-m)) including an outermost layer; and a double wall sound shield including two concentric roving cylinders, a first roving cylinder (112) and a second roving cylinder (112), the first roving cylinder (112) positioned against the outermost layer but detached from the coil by a first airgap (130) between the outermost layer and the first roving cylinder (112) to reduce a structure-borne transmission of an acoustic energy or attached by ductsticks to the coil, wherein the second roving cylinder (112) is placed at a distance from the first roving cylinder (112) to form an acoustic cavity between two double walls of the first roving cylinder (112) and the second roving cylinder (112), wherein the double wall sound shield further includes a plurality of sound absorbent panels (110(1-n)) to attenuate resonances of the acoustic cavity between the two double walls of the first roving cylinder (112) and the second roving cylinder (112), wherein each of the plurality of sound absorbent panels (110(1-n)) comprises a layer of sound absorbing material and each of the plurality of sound absorbent panels (110(1-n)) is separated from the first roving cylinder (112) by a second airgap (130), and characterized in that each of the plurality of sound absorbent panels (110(1-n)) comprises installation means and wherein each of the plurality of sound absorbent panels is attached to the first roving cylinder (112) by its installation means.