I recently purchased a 10" KRK subwoofer to go along with my RoKit G2 Powered 8s. I had my 8s hooked up to my computer via a single 3.5 to left/right RCA cable. I attempted to use a similar cable with my sub. The speaker test worked fine, but on playback I have no sub. I then attempted to run one of the aforementioned cables into my sub and, using the high pass filter, connect to the monitors via the left/right outs. I used both the XLR and TRS outs, but I only have sound coming from the sub on playback. So I either have only subwoofer or monitors, and while testing them works fine, I can find no way to make them both work. I was thinking it could be an issue with my drivers, but I'm pretty fresh to all of this and I have no solid ideas.