Hey guys, a while ago I posted about taking my 2 old bose 601 subs and making a box. I just don't have any money for a sub right now.... None. It really doesn't matter if I screw up because the speakers will be garbaged if I don't try. Now here is my question... The bose have their own crossover, can I still use this? Another question is that I have ordered the JBL NSP1 and the Onkyo 595. I currently have an old realistic amp, can I use this to power my subs? Can I hook it up to the Onkyo? Thanks for all the help to a newbie. If it doesn't work it will be fun to try at least!