I have my KPA500 fan set to NORM,it has gone to fan speed 6 once, when doing RTTY one day,at 500 watts out for an extended time.I almost jumped out of my chair when it got to that speed.
I lowered the input power to the amp and at 400 watts out never heard it that loud since.
I have no complaints on a fan working when I am using the amp hard.For SSB it is rare for the fan to go to speed 3. :)
I really really like this amp, yes I would like a larger version.
I would like 40 acres of property and better antennas too.
73 K2HAT Lee Hatfield Jr
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