Originally Posted by audioengr
IME, you dont really have to worry about later reflections if the line is reasonably matched, just the first one.
Even if it is not reasonably matched, the only one that matters is the first. Do the math: assuming you have an incredibly bad mismatch of 50%, on both ends, what do you get if you multiply 0.5 times itself, 4 times?
You get something that is 24 dB down. OK, enough to screw things up. I have seen some bad gear, but nothing that comes close to 50% mismatch. You would need to have both ends to be this bad. Sorry, not likely. Even with 30%, the second reflection is down 42 dB.
If you have a 30% or 50% mismatch, you are going to be unhappy, no matter what. Won't matter what reflection is mucking things up. It will sound like crud.