Quote Originally Posted by 2dee11 View Post
i thought you said with sealed box you should just leave it all the way down or off?
True...sealed will have a roll off and it wouldn't matter in majority of cases. You usually want to add a filter if you're attempting to use EQ to boost the lower end of the sub output and I would suggest putting the infrasonic filter at just below the Fs of the speaker and hopefully it's a 24 decibel slope