Hey guys, trying to help a mate set up a set of active speakers + subwoofer. Problem is, there is no line out on the speakers amp to plug both the sub and speakers in at the same time, and his TV outputs are limited. My first idea was this setup, would a split line out from 1 channel only mean he misses out on some audio passing to the sub? Second idea was the following, however would the splitters and Y cable mean that the L & R are both mixed and he would lose the stereo sound? 3.5mm is working well as it allows him to change the volume via the TV, I assume RCA wouldn’t let him do this as this would be line out rather than an audio out?