Subwoofer kabel 75ohm?

Ursprungligen inskrivet av JenzA
Kan du inte berätta varför kabeln inte SKA vara 75ohm?

75ohm är annars en ganska vanlig impedans på obalanserade lågnivåkablar för analogt audio, balanserade är oftast 100-110ohm.

Digitalkablar är vanligast 93ohm obalanserat, 110ohm balanserat (AES-EBU).

Hardware specifications

The "S/PDIF" specifications allow several different types of cables and connectors which must match the device being used. Key words for the electrical type are "coaxial" and "RCA jack." The other type is called "optical" with the word "TOSLINK" often used, or less-often, EIAJ Optical. Adaptors do exist to convert the coaxial RCA Jack S/PDIF to the optical TOSLINK S/PDIF and vice versa (though most individual adaptors are one-way only). All require some sort of external power supply. The "optical" version is advantageous for applications where electrical noise or many wires are an issue such as car audio.

S/PDIF was developed from a standard used in the professional audio field, known as AES/EBU which is commonly used in Digital Audio Tape (DAT) systems and for transmissions in professional studio recording. S/PDIF remained identical at the protocol level, but changed the physical connectors from XLR to either electrical coaxial RCA jacks or optical TOSLINK, both of which cost less and are easier to use. The cable was also changed from 110 Ω (ohms) impedance balanced twisted pair to the already far more common (and therefore compatible and inexpensive) 75 Ω coaxial cable, using RCA jacks instead of the "BNC" connector found in broadcast television. S/PDIF is, for all intents, a consumer version of the AES/EBU format.

Ursprungligen inskrivet av JenzA
Ja jösses, skrev visst fel. skrev 93ohm istället för 75ohm.

Men du skrev inte vad du själv tyckte, du klippte in någon annans tyckande istället.

Ursprungligen inskrivet av JenzA
ursäkta skruvis, men min tredagarsmigrän har nått sitt klimax ikväll, det är nog jag som är snurrig.