Central Closet Help

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I have 50' and 100' in-wall HDMI cables connected to 4 TVs via matrix switcher with decent performance. One 100' cable is connected to the theater and has the best image quality. I also have 2 TVs connected via cat6 baluns. They work ok, but it took some try and error to find the right HDMI converters. At one location I was not able to make baluns work at all, and used Apple TV instead. Also a downside of using  cat6/HDMI converters at wall-mounted locations is they are difficult to hide (and most require plug-in power at the receiving end). If you can run HDMI in addition to 2 cat6 and 1 cat5, you'll be able to find the best way to send the signal to each location. It is difficult to determine the quality of your run without actually testing with your equipment. The results can be affected by the noise of power lines as well as the quality of components.