A lot of the bass energy from drums comes from the speakers, not the sub. Subs mostly only do deep bass. Much of the punch of drums lay above the 80Hz crossover point that people usually use for subs. Your speakers have to share some of the blame for the lack of punch from your system. The Rel sub definitely isn't going to hit that hard as well. I would upgrade both the speakers and the sub. Get some tower speakers.\n\n\nSpeakers that do a decent job with low frequencies and a great job with midbass can satisfy most people, especially if they aren't aware that there's no subwoofer. Well recorded drums are a really good way to audition speakers and when they can't handle drums, they're not going to be a great choice unless the listener never or rarely listens to music with drums and\/or percussion.