so the idea in the pic i posted should work ok then?Yessir...active or passive...either or will do the job.
the speed controller plugs into the outlet its self, then the fan plugs into the speed controller... theres no possible way to have it inside unless the power strip was inside too.it looks good to me o.o but guess it depends on cfm/wattage etc. one question, why put the speed controller outside?