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Thanks for the link Keith. Looks good but it says PCB is not tested. was wondering if we can DIY JLH amp (tested and revised) here how much will it cost ?
There you go. This (the heat) is the only reason I had abandoned my plans of building an PassDIY F5. Not suitable for a tropical country like India, at least not Chennai or Hyderabad.:sad:
as this must be low power (around 10W) amp Heatsink I guess can be salvaged from an old amp. But not sure.
Don't abandon plans on such assumptions. Pass F5 can happily work in Hyderabad or Chennai or Cal for that matter. All you need to give it, is a good piece of heatsink. The transistors used there can withstand junction temps close to 120 deg. With heatsinks, you can operate them at 50-70 deg. You can improvise by adding small fans to the heatsinks. The cooling efficiency improves dramatically.
I do understand the heat dissipation from the amp to the atmosphere can be achieved effectively by using heat sinks and fans irrespective of the ambient temperatures. I was referring to this:even if captain is right i could use the f5 as a heater in winter
The heat has to go somewhere. From the amp into the surroundings.
It's effect on room temperature would be substantial IMO if we do not have air conditioning during summers.I wonder by how many degrees the temperature in the room housing the amp would go up to.
good suggestion but different amp and enclosures need different sizes of heat sink, so that would be a problem.
I do understand the heat dissipation from the amp to the atmosphere can be achieved effectively by using heat sinks and fans irrespective of the ambient temperatures. I was referring to this:...
It's effect on room temperature would be substantial IMO if we do not have air conditioning during summers.
Has anyone tried casting custom made heat sinks, using hand made patterns? It should prove an easy and economical source, particularly if a number of DIYers share the cost of pattern making. Any thought, anyone?
I agree, but there are many group buy/build projects in the DIY forum where my suggestion may address a need felt and expressed by many by providing the required number of heat sinks of the requisite size and capacity for the given number of DIY projects for the group as a whole. It is also possible to use a number of smaller units where larger heat sink capacity is required, using a suitable cabinet design and arranging the sink units as per requirement.
I am sorry if my sentences have become rather complex but I hope I have been able to convey what I mean.