hi does anyone hav any pointers about creating a direct & powerful sub frequency, i jus cnt seem 2 get it so its powerful but not over powering, and so it feels direct and doesnt feel like it is really loose and all over the place? any tips on wot frequencies people try and aim 4? ( i try hit around 50hz) or on different,eq's, compresssors, or tips of any kind? wud b apreciated??