adjusted the gain level according to the voltage output of the player,set the frequency to about 110hz,bass boost set to about 80% ,opened the max listening volume which is 44 for me,adjusted the gain n boost level to the point a lil below where clipping starts ,player 50hz set to +3 sla 0,sub +1 80hz hpf is on from the 4ch now,sound 125hz is set to zero