RCA cables. I want the specs if possible! (car audio)?

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Philmon

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I wana know everything about a rca cable that you would have hooked up in your car to an amp. As far as like what all the insides of the cable pieces do. Like the end of the cable (the metal piece) or the tip?
 
An RCA cable is made from coax (similar to the stuff you see when you cut your CATV coax).

The center wire carries the signal.

A white foam surrounds the center wire and keeps it a uniform distance from a mesh or foil shield.

The signal comes on the center wire and the shield is the other side that represents 0.00 volts.

This does 2 things:

- It protects the signals on the center wire from electrical noise
- It maintains the 75 ohm impedance

The second part is .. not a concern for audio. But it's vital for the higher frequency video signals. The 75 ohm impedance matches the input electronics on a TV. This allows the signals to see a 'smooth' path to the TV.

Hope this helps.
 
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