noise from a cooler (two different ones) - Page 2

facundonu · 3rd July 2006, 02:52 AM

i tried the amp without the fan. some thrash metal really loud for a couple of hours! (94dB speakers can get very loud when your room is small, even on 25w).
it got warm but not hot enough no die.
of course, noises are gone.
i know summer will be a whole different story, so i'll keep the fan and this thread full of pieces of advice just in case.
thanks a lot!

billdinva · 5th July 2006, 09:20 PM

try grounding the heatsink to the chassis/safety ground.

sasmit · 6th July 2006, 01:09 PM

Use a ceramic cap 0.1 uf across the motor supplies...and use a linear reulator off you main supply rails ( 7812 ) to power the motor..use suitable caps on both in and out of the regulator....you should have negligible noise ....not complete silence though

3rd July 2006, 02:52 AM	#11
facundonu diyAudio Member Join Date: Apr 2006 Location: buenos aires	i tried the amp without the fan. some thrash metal really loud for a couple of hours! (94dB speakers can get very loud when your room is small, even on 25w). it got warm but not hot enough no die. of course, noises are gone. i know summer will be a whole different story, so i'll keep the fan and this thread full of pieces of advice just in case. thanks a lot! __________________ old fashioned 3 way http://www.diyaudio.com/forums/showt...threadid=81723 small sub http://www.diyaudio.com/forums/showt...threadid=93185

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5th July 2006, 09:20 PM	#12
billdinva diyAudio Member Join Date: Mar 2006 Location: Virginia	try grounding the heatsink to the chassis/safety ground.

6th July 2006, 01:09 PM	#13
sasmit diyAudio Member Join Date: May 2006	Use a ceramic cap 0.1 uf across the motor supplies...and use a linear reulator off you main supply rails ( 7812 ) to power the motor..use suitable caps on both in and out of the regulator....you should have negligible noise ....not complete silence though

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