Hey, been stewing over everything. I have come to the understanding that I dont understand to much. I have decided that i want it all. I guess that means I'll add a sub. Problem i have now is every powered sub I look at in a under $400.00 price range doesnt go even to 20hz. Is there more to it than just "How low can you go?" Is there more to the story than just being able to go as low as 20hz? If so, what do I look for?

Another Idea was to just add a 2 channel amp. the cross overs in side my Alon's are seperate. there is six posts that I have tr-wired with 12 guage wire. I could disconnect the 12's and use the lfe to send a clean signal to the 2 channel and then power the two 12 seperately from the rest of the tower?