Bernie, WB5HBM, wrote that he would avoid using DC fans since the motors produced "significant" noise compared to AC fans... I wonder if this thought refers to the older "brush" type DC motor and not to the newer "brushless" DC motors?? _-_-bear WB2GCR -- _-_-bearlabs http://www.bearlabsUSA.com - Silver Lightning Interconnects & Custom Mods -