It is probably easiest to get an RCA Y-cable, and spit the sub cable where ever it ends nearest to the location of the new sub.

You don't have to use the ins and outs of the subs. They're just Y internally anyway, so it isn't actually a daisy chain.


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