D Shadford
July 1st 03, 09:34 AM
Thanks for help used CAT 5 cable which has 4 twisted pairs in it. It seems
to work welll :)
"Lee Salter" > wrote in message
om...
> "D Shadford" > wrote in message
>...
> > Hi
> >
> > I want to conect my PC sound to my HiFi in the lounge unfortunately its
> > about 50m away and I would have to run the RCA cable outside the house
which
> > gets a lot of sun.
> > My local delear sells RCA cable in 100m rolls its cheap black co-ax 75
ohm
> > cable but very thin about 1.5mm in diameter. (looks like those free RCA
> > cables that come with a DVD player.)
> >
> > Will such a cable carry sound 50m?
> > Will such cable degrage in the sun and rain.
> >
> > What I thought might be better if I took 2 black RG6 cables instead
although
> > they made for satellite tv they are 75 ohm.
> > Any advise?
>
> The distance is a problem with unbalanced cables, you're likely to
> pick up noise. It would be best to use a high quality tranformer on
> both ends of each line and send the signal "Balanced". The same noise
> induced into 2 twisted wires cancels out the noise, Think of it as one
> wire being plus and the other being minus, an equal signal on both
> (the induced noise) equals zero at the output.
>
> Running any cable outdoors requires a cable with an Ultra Violet
> resistant jacket, typically they are black, but a black jacket is not
> a guarantee that it is UV resistant.
>
> If you decide to used unbalanced cable such as coax, and I discourage
> this, the impedance rating of the cable is only applicable at radio
> frequencies, not at audio frequencies. Impedance is dependant on
> frequency and the difference between RF and AF is extremely
> significant.
>
> Lee Salter
to work welll :)
"Lee Salter" > wrote in message
om...
> "D Shadford" > wrote in message
>...
> > Hi
> >
> > I want to conect my PC sound to my HiFi in the lounge unfortunately its
> > about 50m away and I would have to run the RCA cable outside the house
which
> > gets a lot of sun.
> > My local delear sells RCA cable in 100m rolls its cheap black co-ax 75
ohm
> > cable but very thin about 1.5mm in diameter. (looks like those free RCA
> > cables that come with a DVD player.)
> >
> > Will such a cable carry sound 50m?
> > Will such cable degrage in the sun and rain.
> >
> > What I thought might be better if I took 2 black RG6 cables instead
although
> > they made for satellite tv they are 75 ohm.
> > Any advise?
>
> The distance is a problem with unbalanced cables, you're likely to
> pick up noise. It would be best to use a high quality tranformer on
> both ends of each line and send the signal "Balanced". The same noise
> induced into 2 twisted wires cancels out the noise, Think of it as one
> wire being plus and the other being minus, an equal signal on both
> (the induced noise) equals zero at the output.
>
> Running any cable outdoors requires a cable with an Ultra Violet
> resistant jacket, typically they are black, but a black jacket is not
> a guarantee that it is UV resistant.
>
> If you decide to used unbalanced cable such as coax, and I discourage
> this, the impedance rating of the cable is only applicable at radio
> frequencies, not at audio frequencies. Impedance is dependant on
> frequency and the difference between RF and AF is extremely
> significant.
>
> Lee Salter