Well, I went shopping for a new fan at several of the D/FW electronic stores. I found a number of AC fans that are direct replacements. Some had lower Db and similar CFM specs but, none were quieter. So I put in a 150 ohm 25 watt resistor. John K5XTX --------------------------------- Do you Yahoo!? Yahoo! Hotjobs: Enter the "Signing Bonus" Sweepstakes