Well the first time I used the controller, it was using only the one fan per channel. Either way, that was DOA.
Currently I use two fans per channel. The detailed specifications can be found
here. I asked around some hardware forums I frequent to make sure the fans would work without damaging the controller, and the answer was a unanimous yes. Also, they have been working perfectly in such a setup from when I received the controller until now.
Thanks for the reply.