Brian Dobbs
Ambassador
I recently posted a message concerning the type of cable that I should use for the digital coax out of my DVD player. Lots of people said that I should make sure the cable has a 75 ohm impedance rating. I was told that RCA video cables do have this rating, but RCA audio cables do not. I went out and bought a coax 75 ohm 6 ft cord because that was recommended by so many, but no one has explained why the cable must be 75 ohms. Can anyone tell me why? thanks