Question about the radiator

digi01 · 13th March 2003, 12:55 AM

I have six radiators(170mm X 145mm X 50mm) , plan to make ZEN V4 I wonder whether it is enough or not?

vpharris · 13th March 2003, 09:20 PM

From my experience, you need about 65cm^2 per watt of dissipation. The amplifier dissipates about 90W per channel, so I think that your six is just about right for one channel. Oh, that is with a separate heatsink for the transistor in the voltage regulator. Seven for each channel would be ideal. You could build one channel with the six you have, but it would be a bit warm. No disaster.

I hope you can find six or seven more!

We usully call them "heatsinks," but you are right, they are indeed radiators.

Good luck!

Stabist · 13th March 2003, 09:37 PM

Hmm - those heatsinks looks very same as the ones I used for my Zen v4 prototype ... They didn't seem - but they were OK (when bias was set to arround 1.3 A) - BUT - you must allow air-flow from both sides!
Well - OK - mine are 100x115x65; so they are quite smaller - well later I've found a datasheet for them - each one has K/W koefficient arround 0,7K/W ..

13th March 2003, 09:20 PM	#2
vpharris diyAudio Member Join Date: Dec 2001 Location: Philadelphia	From my experience, you need about 65cm^2 per watt of dissipation. The amplifier dissipates about 90W per channel, so I think that your six is just about right for one channel. Oh, that is with a separate heatsink for the transistor in the voltage regulator. Seven for each channel would be ideal. You could build one channel with the six you have, but it would be a bit warm. No disaster. I hope you can find six or seven more! We usully call them "heatsinks," but you are right, they are indeed radiators. Good luck! __________________ Vince Harris

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13th March 2003, 09:37 PM	#3
Stabist diyAudio Member Join Date: Sep 2002 Location: Slovenia	Hmm - those heatsinks looks very same as the ones I used for my Zen v4 prototype ... They didn't seem - but they were OK (when bias was set to arround 1.3 A) - BUT - you must allow air-flow from both sides! Well - OK - mine are 100x115x65; so they are quite smaller - well later I've found a datasheet for them - each one has K/W koefficient arround 0,7K/W ..

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