I have a 2ch amp that I will be adding a subwoofer using speaker level inputs to the sub, and my speakers are rated -3db at 52hz. I will be using it for both music and movies. I do enjoy the feeling of LFE and it seems generally the ported subs will go sub-20hz
Are there any benefits of going sealed?
Ported can go much deeper, but it costs to go below 20 hz, and not all ported subs really play that deep. Read some reviews of whatever sub youre interested in before deciding,