They generally include extra shielding and are thus slightly more expensive. The type of media boxes im using are the only type i could find locally and they were only.
Ce Tech In Wall Low Voltage Installation Cable Kit
Installing hdmi cable in wall. The two black cables are the three coax cables i needed for tivo and hdtv. A 10 in wall installation is good for pretty much anything but the cheapest cables. Plug the included power supply cord into the inlet box and the nearby wall receptacle. Get out the sharpie put the single gang wall box up to the wall and trace the inside of it with your marker to get the general size of the rectangular hole youre going to cut into your wall. Do this twiceone down by the baseboard and one up by the tvs wall mount bracket. 1 there are in wall rated hdmi cables.
This instructable involves among other things. I had to run those from the second story attic down the corner of the fireplace and through the outside wall. Place your tv back onto the wall and plug the tv power cord into the top receptacle box. The lighter cable is the phone line required for updating the tv tuners. 2 we dont know how far you are running the cable. Most audio and video patch cables are not suitable for in wall installation.
Some hdmi cables that are rated for in wall use dont support 4k or hdr video. Then you would loosen the screws that tighten the wings of the box and and gently pull the box out of the wall you may have to push in on the box as you turn the screw to get the wing to free up from the back of the wall. Push the cables a little into the the wall through the box so there is slack cable in the wall cavity. The large conduit contains the electric i ran for the tv and the hdmi cable. Fortunately there are some clever solutions such as baluns that use in wall rated network cable coax cable rg 6 or even fiber optic cable to pass audio and video signals over long distances. This is the hot setup if you are mounting your tv to the wallthe installation was easy and the quality was good.
Just a tip before you complete the install as you are ready to lock everything down run a dummy string for future use. If in the future you decide to add another hdmi audio or any other cable you can pull it thru with no problem. Tools and supplies in the pics. Hiding power cable and hdmi cable for wall mounted tv step 1. Connect your other cables as needed.