Having an issue with getting much out of my Sub-woofer, I am sure it is in the cabling... What I have is the cable coming out of the receiver on SUB OUTPUT, it then connects to the sub with a splitter/2-bannana jacks to line LEVEL- IN, left/right.. The manufacturer of the SUB is JBL-160, I am almost thinking I should have one more cable coming out of the receiver to the SUB, but unsure????? Maybe the splitter end/2 bananna jacks is supposed to be connected to the receiver as it has been awhile since we have used the system/hooked it up in the TV room..