Thanks Bob for your help. I have one more question. It appears the "Input 1" of my Yamaha sub has only inputs from speaker outputs ("L/R") with no RCA jacks. The "input 2" has 2 RCA jacks, 1 "L" and 1 "R". If I use an RCA subwoofer cable to connect to the sub, should I use the "Input 2", and if so, connect directly to either the L or R, or get a splitter to connect to both? Thanks again for your help (or any others).