Receivers and Audio Components

We are renovating our house. My question is: Does the speaker cable have to be physically separated from the electrical wiring that we are running, and if so, by how much distance. My concern is that the electrical wiring might cause static in the speakers if the cable is too close to the wire. Is there any real need for concern here?

Thanks,     Jane 

I have an old Onkyo TX-SV535.  I am getting crosstalk on the AM channel.  When I configure the system freestanding, I get both the station I am tuning and another AM station that is 1/2 mile away.  When I hook the system up to run the speakers through my in-wall wiring, the crosstalk extends across all channels on the receiver.

 Any suggestions are appreciated.

my kenwood kr-950 receiver has always had a weak right channel, but now its about half as loud as the left. i've had it for about 23 years now.does anyone know what the problem is and is this something i can repair myself? i don't think its the speakers because i've switched them and its always the right channel.

  thanks for any help