Is there any chance of electrical interference if I run speaker wire through the same holes in the joists as nmd90 or should I just drill some separate holes?

Tks, Adrian

Uh, oh.... This was sort of discussed elsewhere here and I was basically called a crazy person for saying that there would be any interference running power and network in the same holes. Speaker wires aren't protected from interference like network cables (cat5, cat6). So I will use those dreaded words... "Best Practice" would be to put them in a separate hole.

However, I bet that a number of people have them run side by side out there, at least through one common hole in a stud, joist, or whatever, without any noticeable issue. The problem is that it is hard to change later.

Tks, Nick. I'm going to play it safe, I've drilled separate holes for speaker wiring.

Run them 1' apart when running parallel and cross at 90 degrees if you have to. Do not use the same holes. It doesnt matter if its cat5 or speaker or telephone, same general practice applies. Nick is right, and not crazy.

Just beat me to it.

When I built my home, I ran comm and audio cables everywhere. The plan at the time, was to have a "whole home audio" system. Well anyway, I did a lot of research on this, cause it's a log house, and there's no fixin' it later option available with log homes..... General rule of thumbs I learned from the Comm techs at work, were: If you must make parallel runs, keep comm and power 24" apart, and/or - 2" apart when crossing over at a 90 deg angle.

There's wiggle room, and that was about 15 years ago, so I imagine comm lines are shielded better nowadays. But I'd still try to and stick with those rules for any comm or audio line, if it were me. It's not something you can fix very easily after the sheet rock goes up.