If you really want to, go ahead and play with eq between 60 and 80Hz. Bumping 60 up will give you a little more thump. If you fiddle a little you should find a sweet spot somewhere between 70 and 80Hz that will give you that "hit in the gut" feeling, which is what I imagine you are looking for. BUT I would first try playing with the location of your subwoofer. There is quite a bit of information on how to place your sub to get nice tight bass without "bloom" or "bloat."

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