yeah screws, nylon screws if u dont want the heatsink to be live, and a pad for insulation, other than that just metal screws and thermal compound, a pentium2 cpu heatsink and fan would probebly be ok, but it will run quite hot at full power, pick up a old pentium4/amd heatsink and fan, that will cool it fine without any fan modifications, use a couple of zenors to lower the voltage perhaps if its too loud(the fan).
i gotta test out my little p2p copy of nationals reference pcb, ill be using a p4 cpu heatsink and fan, so ill let you know how it goes.
click here for image
i gotta test out my little p2p copy of nationals reference pcb, ill be using a p4 cpu heatsink and fan, so ill let you know how it goes.
click here for image
well i didnt end up using the p4 heatsink/fan, i found something else laying about that was easier to mount too.
should give u a idea, at even midly turned up volumes(no fan), it hits SPiKe(nationals protection setup) very quickly, a 120mm fan kept it at bay however, it was mildy warm.
the heatsink is finned at the back, about 3cm in height, but this particular heatsink has a very thin base, which appears to be a bad thing, it majorily hotspots.
Click here for image
should give u a idea, at even midly turned up volumes(no fan), it hits SPiKe(nationals protection setup) very quickly, a 120mm fan kept it at bay however, it was mildy warm.
the heatsink is finned at the back, about 3cm in height, but this particular heatsink has a very thin base, which appears to be a bad thing, it majorily hotspots.
Click here for image
Another question
Didnt want to make new topic for my questions.
Parallel, not bridged.
Would that be enough for two parallel lm4780's? I listen music at normal/quiet volumes and use +-34V rails.
Another question btw, can i use two 120VA transformers for these chips..one for each?
Cheers!
Didnt want to make new topic for my questions.
An externally hosted image should be here but it was not working when we last tested it.
Parallel, not bridged.
Would that be enough for two parallel lm4780's? I listen music at normal/quiet volumes and use +-34V rails.
Another question btw, can i use two 120VA transformers for these chips..one for each?
Cheers!
Hi Niila,
If just one parallel pair then 180VA is sufficient.
will be to supply four chipamps, each putting out a maximum near 60W.So its better to use one 360VA trafo instead two smallers,
If just one parallel pair then 180VA is sufficient.
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