I just received a Coby CSMP90 soundbar for Christmas. I am trying to hook it up to my fairly new (couple months old) Polk Audio PSW10 subwoofer. First let me start off by saying, both the sub and the soundbar work individually, so neither is broken. The soundbar has a 3.5 mm jack in the back and next to that jack reads subwoofer out. The back of the subwoofer has a L & R RCA input. Thus, I connected the soundbar to the subwoofer via a 3.5 mm RCA cable (it is a Y split cable). The subwoofer does have an amp on it (it's a sub/amp combo). So I turned the low pass as high as it would go (as per the manuals instructions) to help create an LFE line. I'm not getting anything out of the subwoofer. Please help me, I have no clue where to go with this. I really like the soundbar (despite being a brand like Coby), the sound is really good and I don't want to have to go through the process of returning it because it is not compatible with the woofer.