




The amp will have a 2 dials that set the frequency "floor" for the speakers. This setting is in Hertz (Hz). With those speakers, at that power level, and for surfing, I would probably set those two dials at 80Hz. Id also like to see where they are set currently if you dont mind noting and posting back.
Next, you need to make sure the two x-over filter switches are set on "Hi-Pass". If your gains where set using a gain setting procedure, then turn them down a couple clicks.