interconnect cable confusion

Joined
Jan 19, 2002
Messages
36
I am a physician with such a passion for audio that for years now I have had a side business -- "DR JOHN'S AUDIO." My question is this;

What is the difference b/w these three; coaxial digital audio cable

subwoofer cable , coaxial video cable

Thanks for your help

DR JOHN
 

Bob McElfresh

Senior HTF Member
Joined
May 22, 1999
Messages
5,182
Well, all 3 are Coaxial cables. If you cut one, it would look just like your CATV coax.

The Video and Coaxial Digital cables should all be made with something called "75 Ohms Impedence" cable. The electronics on either side expect this for proper signal transmission.

(You can get coax cable in 50/75/110 and 300 ohms impedence).

The Video and Coaxial Cable are also a bit sensitive to having a good RCA plug on the ends.

A subwoofer cable is just a long coax cable with RCA plugs on each end. Because of the low frequency (120 hz) and the low band-width needed (20-120 hz) almost any good coax cable will work.

A subwoofer cable seems to be sensitive to a tight-fitting RCA connector. This might explain why people hear a difference when they switch.

Hope this helps.
 

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