@n80 when I had my equipment in an enclosed rack, back open, I used 2 units of 2 fans each with temp control set at 90 farenheit. They ran pretty constantly and kept the temp inside the cabinet with equipment running at between 114 ad 124 farenheit depending on how hard the amps were driven. Amps had 3" of breathing room around each and we’re seperate by shelves. 1 2 fan unit for each amp.
Worked quite well for me fans were hardly noticeable at full speed and impossible to notice at slower speed. The fans were variable controlled by a temp sensor control unit. Had it like that for years, never had a problem. Hope this helps
Worked quite well for me fans were hardly noticeable at full speed and impossible to notice at slower speed. The fans were variable controlled by a temp sensor control unit. Had it like that for years, never had a problem. Hope this helps