TV Audio

I wanted to get audio from my TV to the other side of the room, where my stereo is. Here's what I came up with.

First problem: My TV doesn't have a plain line-level audio output! It has a headphone jack and a coaxial S/PDIF output.

Funny thing is that it actually does have a line-level audio out. When I took more pictures to add to this blog post I noticed it, but I swear it wasn't there before!

Even without one it's not a huge problem. This little box does the trick. It's a S/PDIF to unbalanced audio (RCA) converter. It works with both optical and coaxial S/PDIF in, and I already had one I use on another TV using optical S/PDIF and it worked great there. The S/PDIF coaxial connection is the blue cable, above.

So now I have a regular unbalanced line-level RCA phone plug signal - how do I get it to the opposite side of the room?

All of my wiring uses the Leviton QuickPort wall jacks. Browsing the catalog of devices, I found these nifty devices: They're audio over unshielded twisted pair. The picture is from, as I forgot to take a picture before I installed it.

Basically with one 4-pair cat. 5 cable you can run a stereo audio connection. Perfect! I fished the wire, ran it through the basement, and switched the existing plates to ones with 2 more holes.

stereo2.jpg stereo3.jpg

At the other end, theoretically I would have just run the audio into my mixer and be done with it. Unfortunately, I get an awful hum, and it seems to be the TV's fault - there's no hum until I make the last coaxial S/PDIF connection.

Fortunately, this little box, a Behringer hum eliminator, came to the rescue and it worked perfectly! The photo is from, which is also where I got it from. I uses unbalanced 1/4" mono TR plugs, but so does my mixer, so that worked out okay.

stereo5.jpgAnd that did it! It sounds much better than my TV's built-in speakers.

About this Entry

This page contains a single entry by Rick Kasguma published on March 11, 2013 10:07 AM.

Snow measuring stick was the previous entry in this blog.

Surveying tool is the next entry in this blog.

Find recent content on the main index or look in the archives to find all content.