Gregm is not confused, and unless I am, the active crossover idea won't help. Kr4 did motivate me to think a bit further, and the sub has speaker-level inputs, so presumably I could just run speaker cable from the amp to the sub. However, something makes me think that the line level connection would be better quality. True?..and if so, am I better off with the adapters Kr4 mentions, or does their inclusion offset any sonic advantage to using line level vs. speaker level? Thanks guys, Ben