Originally Posted by Scottie
I Have a 12" single sub in a sealed box and I think I have the A LPF (Low Pass Filter) set to about 100 should I try setting the setting different, what will be noticed by turning it down and up? I think it goes from 40 Hz to 240 Hz on my mono amp?
O.K. ... wow ... where some of these guys are going I have no idea.
Adjust your LPF to around 80hz. That's because your highs won't go much lower than that so the sub will "take over" from that point down. If you have adjustments to control your highs, set the HPF to 80hz for your fronts/rears also.
If you have a subsonic filter, you may not need it at all (sealed enclosure), or turn it on and leave all the way to the left (lowest setting).