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does ne1 really noe how to set the Lpf Hpf something have to do wit the high and low..low r like bass and high r like treb is it ?
i dont noe help me set it up or if u noe how pls help

 
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Low pass filters are exactally that. It lets low frequencies pass but filters out everything else. Low pass filter are for subs. High pass filters are for highs and block out bass, so to not damage the speakers.

PS Wrong forum

 
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so how do i set it correctly?

 
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I have my high pass for speakers set to 80Hz, so the speakers only play frequencies above 80Hz and not damaging lower ones. For the sub, I have the low pass set to 100Hz, so the sub only plays frequencies below 100Hz. That should give you a starting point.