I have a JL sub hooked up to my bose system using a line out converter but there seems to be something wrong with it? I was wondering what might be the problem. THere is signal going to the speaker but even with my 240 watt amp bridged into one channel and pushed to max gain it still doesn't hit like it should. it there something wrong with using a line out converter because i had a store install it for me? What could be the problem? Please Help!!!!!