I'm having an entertainment center built that will house my receiver, DirecTV box, and DVD player. I'm installing 80mm fans (Enermax UC-8EB) to create airflow through the cabinet. I'm wondering if there's an easy way to install in in-line thermal sensor that would switch the fans on and off at a given temp. The fans themselves are already really quiet, but I'm assuming that the baffles they'll be blowing over will create some noise. Ideas?