Hi I am new to this forum, but read quite a lot of threads. A great deal of knowledge resides on this forum. My question: Has anyone tried to use a 'what I would call a rack amp' i.e. Crown, Behringer etc. for a diy subwoofer build. Not sure if it is the same as a dedicated sub amp or not. I just see how much power these amps put out for the money. Not to blow a sub out but to give it the headroom to perform to its ability. Any info. is greatly appreciated.