setting up sub via low level input and setting frequency crossover

[Christopher W.]

I have found this guy to be very helpful.  I have spoke to him once as he now works for JL Audio technical and I have two Fantom F-112s.  He was very helpful and full of information.  He also has a disc to buy to help set up your system.  There may be better ways now as I have never used the computer software out there.  It is a good read at the least.

http://www.soundoctor.com/whitepapers/subs.htm

He says to put sub or subs in mono but I think some music is now being mixed with stereo bass.  My subs are being used 80hz and down.  I am not sure about the difference using subs as part of a full range system as opposed to using them to just boost the very bottom end.  My speakers only play down to 80hz.