modulator Posted October 1, 2011 Report Share Posted October 1, 2011 (edited) Hello, I have made some comparisons between J3 and J25. J3 5V DC adds noise to the audio signal. I would advise to use J25 with a 50 Ohm resistor. I dont like fans in the audio area but it is required here. You can test it with a good headphone and mixer and turn the volume up and then displug and plug the fan. There is lots of other noise, I thing it is normal and produced from the SID? (It is not produced from my mixer). But on the 5VDC you can hear the fan! If I turn the volume down to a normal level I hear nerly nothing so it is ok. best regards Edited October 1, 2011 by modulator Quote Link to comment Share on other sites More sharing options...
Hawkeye Posted October 1, 2011 Report Share Posted October 1, 2011 Hi there, if you use 8580 or 6582 SIDs, heat sinks and some drilled ventilation holes will do (even on hot days :-)) Greets, Peter Quote Link to comment Share on other sites More sharing options...
Antix Posted October 1, 2011 Report Share Posted October 1, 2011 Hi, I am using heatsinks on the SIDs too. I noticed that they get really hot so bought some 28DIP format heatsinks and a thermal conductive biadhesive tape ( I found AKASA but I think there are others too ) I made some drills in the bottom of the case and used a fan taking supply from J4 GND - 9V W/O any resistor Regards Antix Quote Link to comment Share on other sites More sharing options...
Janis1279 Posted October 2, 2011 Report Share Posted October 2, 2011 Hi, I have the additional linear voltage regulator with the LM7808 ( 8 volt ) ic to the MB6582 fan. Not used the heatsinks for the Sids. Regards, Janis Quote Link to comment Share on other sites More sharing options...
modulator Posted October 2, 2011 Author Report Share Posted October 2, 2011 A LM7808 for the fan is a good suggestion. I will think about it. My first thought was whether it is normal that the SIDs get so hot. I will buy some heatsinks. Anyone knows the distance between SID and CS? For max. height of the heatsink. best regards Quote Link to comment Share on other sites More sharing options...
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