[comp.sys.apple2] Internal fans

cs4w+@andrew.cmu.edu (Charles William Swiger) (05/03/90)

The System Savers really are supposed to be quiet.  My particular one is
quieter than the (soft) high pitched whine of the two monitors I have. 
It is much quieter than >any< other fan that I run across, for any other
computer system.  (The IBM RT I'm on now sounds like it has an air
conditioner somewhere inside there!  From the size of the case, it just
might, too . . .   ;-)  I'm sort of surprised that two people have got
fans from Kensington that are noisy enough to be annoying.  The perils
of modern quality control, and all, I guess . . . .


				-- Charles William Swiger
				cs4w+@andrew.cmu.edu

skann@gnh-applesauce.cts.com (Steve Kann) (05/04/90)

        Yes, my Kensington System saver has the same problem.. It is caused by
the way the fan is designed, it seems as if it "floats" on a 1 point bearing,
and until it gets up to speed, and it's gyroscopic effect keeps it level, it
sometime hits it's housing.. But, however, it should be VERY quiet once it is
going. and not only is it physically quieter, but since the rom 01 sound
circcuitry is so poorly insulated, it makes a tremendous difference in sound
quality. Apple's (cheap) fan causes all sorts of hisses and buzzes, especially
in my setup, where I have my GS hooked up to my 150 WPC stereo!

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 * Sent by AppleSauce BBS at Thu,  3 May 90 00:27:44