I ordered an LG CX and I want to connect it to bookshelf speakers and a sub. I'm planning to use the edifier r1700bt and klipsch r-120sw, both have rca inputs. The LG CX only has a headphone jack and digital audio output so I'm not sure whats the route to go. I'm very new to just wiring audio but the current idea's I can think of are this and this. I'm not sure either even works. The first has a headphone jack splitter into rca y splitters. The second is just headphone jack to rca into rca splitter. Do any of these work or is there a better way to do this?