A cable assembly configured to electrically connect an active loudspeaker to a source device that comprises a source of electrical power and audio signals. The cable assembly includes a primary sheath, a group of power conductors within the primary sheath and configured to carry electrical power, a group of audio signal conductors within the primary sheath and configured to carry audio signals, a cable-mount connector male plug comprising a first plurality of power pins that terminate a first end of each power conductor and a second plurality of audio signal pins that terminate a first end of each audio signal conductor, wherein the cable-mount connector plug is configured to be coupled to a panel mount connector female socket of the source device, and a cable-mount connector female socket comprising a first plurality of power receptacles that terminate a second end of each power conductor and a second plurality of audio signal receptacles that terminate a second end of each audio signal conductor, wherein the cable-mount connector socket is configured to be coupled to a panel mount connector male plug of the active loudspeaker.

A shielded electrical cable includes conductor sets extending along a length of the cable and spaced apart from each other along a width of the cable. First and second shielding films are disposed on opposite sides of the cable and include cover portions and pinched portions arranged such that, in transverse cross section, the cover portions of the films in combination substantially surround each conductor set. An adhesive layer bonds the shielding films together in the pinched portions of the cable. A transverse bending of the cable at a cable location of no more than 180 degrees over an inner radius of at most 2 mm causes a cable impedance of the selected insulated conductor proximate the cable location to vary by no more than 2 percent from an initial cable impedance measured at the cable location in an unbent configuration.

A multicore cable includes a twisted wire portion including a plurality of Twinax cables and a plurality of coaxial cables, and a shield layer disposed on an outer periphery of the twisted wire portion. The twisted wire portion includes a first twisted wire layer and a second twisted wire layer in a cross section perpendicular to a longitudinal direction of the multicore cable. The first twisted wire layer is closest to the shield layer, and the second twisted wire layer is located on a center side from the first twisted wire layer and is adjacent to the first twisted wire layer. A closest Twinax cable is disposed in the second twisted wire layer. The closest Twinax cable is closest to the shield layer among the plurality of Twinax cables included in the twisted wire portion.

A multicore cable includes a twisted wire portion including a plurality of Twinax cables and a plurality of coaxial cables, and a shield layer disposed on an outer periphery of the twisted wire portion. The twisted wire portion includes a first twisted wire layer and a second twisted wire layer in a cross section perpendicular to a longitudinal direction of the multicore cable. The first twisted wire layer is closest to the shield layer, and the second twisted wire layer is located on a center side from the first twisted wire layer and is adjacent to the first twisted wire layer. A closest Twinax cable is disposed in the second twisted wire layer. The closest Twinax cable is closest to the shield layer among the plurality of Twinax cables included in the twisted wire portion.

A printed circuit board comprises a substrate and a routing structure arranged on the substrate, the substrate has a welding region and a routing region electrical connected with the welding region. The routing structure comprises a plurality of bonding pads connected with corresponding wires and a plurality of conductive traces electrically connected with the bonding pads, the bonding pads is arranged in the welding region, and the conductive traces are disposed in both the welding region and the routing region. The bonding pads are arranged abreast, and in the arrangement direction of the bonding pads, the bonding pads defines at least two grounding pads for connecting with grounding wires and at least a signal pad between the two grounding pads.

A twinax cable 100 includes a twinax structure, the twinax structure including: a signal wire pair, the signal wire pair including a pair of signal wires formed of a first signal wire and a second signal wire, and an insulating layer configured to cover the pair of signal wires; a drain wire; and a shield tape arranged on the outer circumferential side of the insulating layer to cover the signal wire pair and the drain wire. The insulating layer is mainly composed of polyethylene. The insulating layer includes not less than 30 ppm and not more than 4000 ppm of a hindered phenol-based antioxidant. A dielectric tangent tan of the insulating layer at the time of application of a high-frequency electric field having a frequency of 10 GHz is not more than 3.010.sup.4.

A twinax cable 100 includes a twinax structure, the twinax structure including: a signal wire pair, the signal wire pair including a pair of signal wires formed of a first signal wire and a second signal wire, and an insulating layer configured to cover the pair of signal wires; a drain wire; and a shield tape arranged on the outer circumferential side of the insulating layer to cover the signal wire pair and the drain wire. The insulating layer is mainly composed of polyethylene. The insulating layer includes not less than 30 ppm and not more than 4000 ppm of a hindered phenol-based antioxidant. A dielectric tangent tan of the insulating layer at the time of application of a high-frequency electric field having a frequency of 10 GHz is not more than 3.010.sup.4.

A shielded electrical cable includes conductor sets extending along a length of the cable and spaced apart from each other along a width of the cable. First and second shielding films are disposed on opposite sides of the cable and include cover portions and pinched portions arranged such that, in transverse cross section, the cover portions of the films in combination substantially surround each conductor set. An adhesive layer bonds the shielding films together in the pinched portions of the cable. A transverse bending of the cable at a cable location of no more than 180 degrees over an inner radius of at most 2 mm causes a cable impedance of the selected insulated conductor proximate the cable location to vary by no more than 2 percent from an initial cable impedance measured at the cable location in an unbent configuration.

A cable has a core line. The core line includes a signal line transmitting a signal, a ground line having a ground potential, and a shield line covering the signal line and the ground line. The ground line and the shield line are electrically coupled together.

A cable has a core line. The core line includes a signal line transmitting a signal, a ground line having a ground potential, and a shield line covering the signal line and the ground line. The ground line and the shield line are electrically coupled together.