I have a Denon 3805 with only one sub out. So I have run a splitter to my svs and my two rocket ufw 10's. I want the 10's to augment my mains in the upper base and let the svs handle the low and dirty work. If my receiver is sending out signal crossed over at 80hz how do I divvy up the signal on the sub end of things? Say 30 hz and down to the svs and 30hz and up to the mains and the two 10's. If I understand this right I can not use the built in cross overs on the subs beings a crossed over signal is already being sent. Am I stuck with this configuration for know with an av receiver and when I go pre/pro will this change my sub dilema?