Re: KPA1500 fan noises

[Roy Koeppe]

"The benefit to putting fans in back blowing through the stock
screen/fans is that you get the slight added benefit of over-pressuring
the chassis which tends to keep the chassis interior cleaner. Assuming
adequate rear spacing, you can hide the fans a bit more...."

Yes. and the ultimate is placing them remotely in the closet with a clothes
dryer hose leading to that plenum sitting at the back air intake coupling.
Care must be taken so as not to ever restrict air intake to the internal
fans when they're running at max speed.

Roy


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[Roy Koeppe]

About-

"Take care in the application of added cooling efforts"

Yes, but the proof is in the pudding; watching LEDs display the amp's temp,
the readings are always cooler with the aux fans running. One reason is that
between transmissions they continue running and reset the temp back to near
ambient room temp instead of around 50C where the stock fans shut off. My
operating is QSK rag-chewing, breaking back forth in round tables. Fans do
remain off then nearly always. P.S...my 4.5-inch, 48-volt muffins cost a
whopping $1.86 each! Guess no one wants 48V. If bearings wear out, so what.
:-)

73,

Roy    K6XK    Iowa


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