[Elecraft] KPA1500 Power Supply Fan Noise

[eric norris]

More broadly, has there been any progress on reducing the piercing power supply fan noise on the KPA1500 when only using it as a tuner or an antenna switch?  I complained about this a year ago, and I find it completely unacceptable.  No set of noise-reducing headphones that I have tried works well enough to make the noise tolerable.  I've tried moving the PS deck around with minimal improvement.  This just doesn't seem to fit Elecraft's philosophy of a quiet operating environment.  Why do these fans have to operate at full throttle when there is minimal current draw from the rf deck?  Why do these fans create such a piercing high-pitched note?  
If there is no response from Elecraft, what have other ops done--short of moving the PS into an adjoining room--to mitigate the scream?
Thanks,
73 Eric WD6DBM

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