ZAPpulse owners. Heatsinks and better sound when hot.

mattjk · 25th October 2004, 07:05 PM

What are you doing for heatsinking?

I recently install my kit into an aluminum chassis, and the modules run extremely cool now, but don't seem to sound as smooth. It is infact a bit brighter sounding and the bass is boomier.

Before, I had it on a test board, and the modules were mounting on a bar of steel. They ran pretty hot, but the sound was better.

???

michaelab · 30th October 2004, 04:19 PM

Just mounted mine to the base of my aluminium case. They run warm and sound great

Michael.

mattjk · 30th October 2004, 04:38 PM

Do you have any noise issues having them mounted far apart?

michaelab · 30th October 2004, 09:54 PM

None at all. What kind of issues do you have in mind? I would have thought the further apart the better so they don't have any chance of causing interference with each other.

They are almost completely silent at idle, just a very faint hiss from the speakers that I have to have my ear next to the tweeter to be able to hear.

When I switch the amp off, as the PSU caps are draining I get a faint weird eeeewwaaao sound a bit like tuning a SW radio for 2-3 seconds before the modules switch off. Not quite sure what that is but I it hasn't bothered me. It's a superp amp IMO

Here's another pic:

http://www.luacheia.com/misc_images/...oject/amp5.jpg

I've twisted the input wires now allthough it didn't notice any difference as a result of doing so.

Michael.

25th October 2004, 07:05 PM	#1
mattjk diyAudio Member Join Date: Aug 2004 Location: Huntington Beach, Ca	ZAPpulse owners. Heatsinks and better sound when hot. What are you doing for heatsinking? I recently install my kit into an aluminum chassis, and the modules run extremely cool now, but don't seem to sound as smooth. It is infact a bit brighter sounding and the bass is boomier. Before, I had it on a test board, and the modules were mounting on a bar of steel. They ran pretty hot, but the sound was better. ???

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30th October 2004, 04:19 PM	#2
michaelab diyAudio Member Join Date: Dec 2003 Location: Lisbon, Portugal	Just mounted mine to the base of my aluminium case. They run warm and sound great Michael.

30th October 2004, 04:38 PM	#3
mattjk diyAudio Member Join Date: Aug 2004 Location: Huntington Beach, Ca	Do you have any noise issues having them mounted far apart?

30th October 2004, 09:54 PM	#4
michaelab diyAudio Member Join Date: Dec 2003 Location: Lisbon, Portugal	None at all. What kind of issues do you have in mind? I would have thought the further apart the better so they don't have any chance of causing interference with each other. They are almost completely silent at idle, just a very faint hiss from the speakers that I have to have my ear next to the tweeter to be able to hear. When I switch the amp off, as the PSU caps are draining I get a faint weird eeeewwaaao sound a bit like tuning a SW radio for 2-3 seconds before the modules switch off. Not quite sure what that is but I it hasn't bothered me. It's a superp amp IMO Here's another pic: http://www.luacheia.com/misc_images/...oject/amp5.jpg I've twisted the input wires now allthough it didn't notice any difference as a result of doing so. Michael.