this is probably been asked 100s of times, but here goes again. LPF ans HPF settings, i search omline and find answers for settings them both to 80HZ to setting the LPF to 80HZ and the HPF to 100HZ or even 120HZ. im running three amps, one for door speakers, pioneer 6.5" and one for my two 8" JL audio subs. ive tried both settings but seem to go back to 100HZ for the HPF. my LPF is 80HZ.