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Chip Amps Amplifiers based on integrated circuits

I'm liking the LM3875...
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Old 25th July 2011, 06:12 PM   #11
jemraid is offline jemraid  United Kingdom
diyAudio Member
Join Date: Aug 2004
Location: NE Derbyshire
Dear John,

I'm sure your right, as I recall they are quite thick alloy bars and I have been using the amp for 7 years. Oh and yes there is a hole under them so there is a bit of cooling going on.

On my NIGC however, as you do, I screwed a heatsink to a piece of plywood and this sits over another hole. I have some 4 Ohm CHP-70's in FH3's and power this amp with a 12v toroid. The heatsink does get slightly warm if I play something that has a sustained loud passge.

Click the image to open in full size.

Cheers and thanks - Jim
FH3 build using very simple tools and a point to point Gain Clone with largish power supply. http://www.jasread.com/fh3/index.html
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