It's hard to tell if it uses speaker or line level. My first assumption, too, would be that it uses speaker. But it won't hurt to run the line level of the sub out, into the left and right RCA inputs. If you can't get enough volume from the sub, then yes, it needs speaker level inputs (and things will be more difficult--to the point I'd get a different sub).


Pioneer PDP-5020FD, Marantz SR6011
Axiom M5HP, VP160HP, QS8
Sony PS4, surround backs
-Chris