Hi: got a DBX 166 compressor/limiter/gate off ebay. Of course, no manual came with it. Been fiddling with it but I'm unsure of the settings and the plug-in. I use a SWR Workingman's 4004 amp and a peavey bin. questions: 1. Plug-in? Do I plug it into the side effects loop on my amp or from the "Send" and "Return" jacks? If I was using the Send jack, does it go into the "In" on my DBX and the "out" goes to the return?? 2. Settings. It's greek to me. Overeasy, Threshold, Output Gain, etc. Suggested settings for a bass setup live??