Hello everyone, I have a Cinema Audio Studios (CAS) sub which I can't seem to find on the internet. It has worked fine since I bought it. I woke up today and the subwoofer seems to have stopped receiving signal from it's high frequency inputs. The inputs otherwise work fine, because the signal reaches my two bookshelf speakers without a problem. I also tried the lfe input with red and white rca cables, and the sub works perfectly. Just to clarify, the sub isn't exactly not receiving a signal, it appears to be extremely low. If I turn the gain to max it doesn't make a difference. Any help would be greatly appreciated.