Question: making RCA cable

[paker]

I need to run 2 RCA cables between radio (dashboard) and 2-channel amplifier (trunk). I have a shielded cable with 2 conductors (20 AWG). Can I use this instead of 2 separate cables? The shield will be shared between L and R. Will there be a crosstalk (?) between 2 inner conductors?
Thank you.

 

[scottjoplin]

You can use it and yes there will be crosstalk

 

[Perry Babin]

The electrical crosstalk will be infinitesimal compared to the acoustic crosstalk that you will have in a vehicle.

 

[AndrewT]

I need to run 2 RCA cables between radio (dashboard) and 2-channel amplifier (trunk). I have a shielded cable with 2 conductors (20 AWG). Can I use this instead of 2 separate cables? The shield will be shared between L and R. Will there be a crosstalk (?) between 2 inner conductors?
Thank you.

This seems the same as a shielded twisted pair (STP).
In an STP cable, one uses the internal pair to transfer the signal, i.e. one of the pair is Signal Flow/Hot and the other is the Signal Return/Cold. The Shield is connected to the chassis/enclosure at each end.
For two channels one needs two STP.

 

[paker]

Thank you. I got the message that it is not ideal but will work.

 

[Perry Babin]

If you have enough cable, you could use 1 cable per channel wired as described in post #4.