Video and audio cables... Don't mix?

I found flexible plastic corrugated hose for wires at Lowes. It works fine. Black, not pretty. The HDMI is several very small wires, the video single ended should be shielded. Although it is theoretically not ideal, I doubt you will see or hear the difference. My concern would be more for interference with the video display more than on the speaker cables. In that case you will see the difference, but I doubt it. The 4S11 will reject some interference due to its quad geometry. I have it running through walls and around some AC lines with no noticeable effect, albeit in a smaller and less resolving system. Try it that way first and see if it makes a difference.

Two conduits - channels eliminates much of this consternation.

Bob_reynolds
Gee thanks, Bob, your input is always pertinent and appreciated.

I never thought of it that way 'round as my focus is always on the audio... except here. Now it's gotta be on both.

AS the HDMI cable and the composite won't ever be energized for long simultaneously, I'm at a loss to see how there can be much derogatory an effect, wouldn't you agree?

Aside from the occasional quick POP or PIP look see... only one cable at a time will be hot.

Tgrisham
Very good!
Thanks for the tip. I'll get up there this weekend and check it out.... maybe it'll take paint.

As much as I dislike having a double run of conduit up there on the ceiling, I believe I'll just do two runs of half the size and just get them up against each other real close... and paint 'em of course.