Yup, should have mentioned that. Sorry. The 1 meg isn't necessary, it is suppose to prevent popping. I did it on the left channel and not on the right in my computer amp, and it made almost no difference at all. The 20k can be subbed for a 22k, thats how I built mine and its fine. Brian told me to actually, but just because thats what he had to give me. If you have a 20k, feel free to try it, but 22k will be fine.