Hey all I found a great project on Instructables. for a sum amp. Only issue is it uses stereo jacks and I only have mono on hand. Anyone know off hand how I would have to accommodate for the ring part of the stereo jack circuit? Not sure what ring would be analogous to? Is the ring a hot or grounded path? I would assume a second "hot" like the tip...So I could presumably put the 10k in the tip path? Or would I have to change the values of the resistors altogether to get the same effect?