Devices for recording, transmitting and reproducing of sound and images; electrical cables; electrical cables, namely, loudspeaker cables, video cables, antenna cables and optical cables with the aforementioned cables also in assembled condition; electric cable components, namely, cable lugs and adapters and wire end sleeves for the aforesaid cables; electric plugs, Acoustic coupling devices, electrical inductors, electric fuse holders and fuses, Coaxial cables incorporating filters and frequency separating filters for integration in image and sound transmitting systems