You can get decent audio performance (line level) out of ordinary cat 5 cable as long as you use a twisted pair. To be honest I'm not sure if coax is actually better at audio. I remember browsing a web site that suggested at those frequencies it was not, but without taking the time to actually try to seriously analyze the two or have the equipment to actually compare them, its hard to say.
The place twisted pair will really shine is if your destination uses a differential connection like used on commercial microphone mixers. Those cables are usually twisted pair with an outside shield, but the key part is the twisted pair and the differential connection afaik. I have run microphone cables at least a couple hundred feet without any noticeable noise on the system. I suppose if you wanted to run an audio level link a really long distance you could probably just isolate it at one end from the ground with a small line level audio transformer. I set up something similar so I could listen to a web radio broadcast down in my garage by using an unused pair of phone wires. Of course there was a tiny amount of noise on the resulting system, but they were really cheap speakers and lacking a 1/8 jack I just bent the wires around the plug. Of course for video there is no substitute for coax other than perhaps another frontend. On Sun, 2005-02-20 at 18:30 -0500, Marc Sherman wrote: > John Konitzer wrote: > > The RG6 cable may have a better shield, but it's a low impedance cable > > (50 ohm, I think). Composite video and 'line-in/out' audio are much > > higher impedance signals (~10 kohms?). Try a non-coax shielded cable to > > see if you get any improvement before buying an amp or another box. > > Are you sure about the impedance for composite video? I've found a lot > of references that it's 75ohms, just like RG6 coax, such as: > http://www.bluejeanscable.com/store/single/composite.htm > > - Marc > _______________________________________________ > mythtv-users mailing list > [email protected] > http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users >
_______________________________________________ mythtv-users mailing list [email protected] http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
