Fan on J3 of MB-6582

[modulator]

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

[Hawkeye]

Hi there,

if you use 8580 or 6582 SIDs, heat sinks and some drilled ventilation holes will do (even on hot days :-))

Greets,

Peter

[Antix]

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

[Janis1279]

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

[modulator]

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