They're really great. I'm not sure what a pic would show that the diagram doesn.t I have mine tall enough so the level of the water in the back of the overflow box is just above the spill over ledge, so there is no splashing of the water back there. The only splashing I hear is the water falling into the overflow box, after that, it's all quiet.
That setup is basically the same as having a durso be taller than the overflow teeth, which means there's no "splashing" going on back there, so I don't imagine it would work the same in a RR setup, but it works great in a non RR tank in the overflow box, and since I set it up back in September, I only had to adjust it once, which was when I changed from my QuietOne 2200 pump to a Mag 9.5 pump.