Correct, that is how i have it setup. Pixelation is a result of many different things. I actually believe I needed two fixes the multi-streaming card and the diplexer. I know this will sound weird but the pixelation had a slightly different look to it once I got the multi-streaming card. Hard to describe but the pixelation pattern looked different. Perhaps too much time playing video games. At any rate I think I have a test that may help determine if a diplexer would help, but I only have one sample set (me). A test to see if a diplexer would help would be to check to see if there is a direct correlation to increased pixelation and increased internet traffic. Start a large download and/or anything that would increase network traffic, then check the RS Corrections/Uncorrected numbers and/or just the visable pixelation. I was able to find a direct correlation between the two. My wife and I would both be on the internet streaming video or doing anything traffic intensive and boom tons of pixelation. Practically halt traffic and the attenuators did there job no problem, very LOW RS corrections and uncorrected numbers and no visible pixelation. Hope this helps.