Or, for $9 each, you can replace them in about 15 minutes with a low flow, more quiet fan. I can't hear my stack of four QSCs from more than a foot or two away even with nothing playing. My normal listening position is about 8 or 10 feet from the amps. Even with the stock fans I couldn't hear them from there with music playing. I changed them anyway just to be sure for the quiet parts of movies.
3/27/14 at 6:39pm