Is this heatsink suitable for this amp?

badboy6120 · 13th August 2011, 07:41 PM

hi everyone

I want to build this amp and I'm wondering that can I use this heatsink for each channel mosfets?

fans details :
The breeze presses : 39 CFM
The fan turns soon : 3200rpm
Fan size : 80*80*25mm

(1 heatsink for 4 transistors of each channel)

btw : with fan of course

ingenieus · 08:31 PM

Heatsinks for audio amps are almost always specified as degrees Celcius (or Kelvin) per Watt. This gives the temperature rise for the amount of energy dissipated. For the big bad boy above you want something that is less than 1 K/W. Cubic feet per minute and revolutions per minute doesn't answer this question. My guess would be "no." It seems way too small, even with a fan attached. These pictures shows how these things are usually done.

Tekko · 13th August 2011, 08:49 PM

PC coolers are barely enough for a TDA2030.

mindutis · 13th August 2011, 08:56 PM

It will be not enough.

ingenieus · 13th August 2011, 10:16 PM

I have often wondered how those liquid filled CPU coolers would work in an amp. Or something along that line, scaled up to do the job.

13th August 2011, 07:41 PM	#1
badboy6120 diyAudio Member Join Date: Feb 2011 Location: Malaysia	Is this heatsink suitable for this amp? hi everyone I want to build this amp and I'm wondering that can I use this heatsink for each channel mosfets? fans details : The breeze presses : 39 CFM The fan turns soon : 3200rpm Fan size : 808025mm (1 heatsink for 4 transistors of each channel) btw : with fan of course

13th August 2011, 08:26 PM	#2
ingenieus diyAudio Member Join Date: Apr 2011	Heatsinks for audio amps are almost always specified as degrees Celcius (or Kelvin) per Watt. This gives the temperature rise for the amount of energy dissipated. For the big bad boy above you want something that is less than 1 K/W. Cubic feet per minute and revolutions per minute doesn't answer this question. My guess would be "no." It seems way too small, even with a fan attached. These pictures shows how these things are usually done. Last edited by ingenieus; 13th August 2011 at 08:31 PM.

13th August 2011, 08:49 PM	#3
Tekko diyAudio Member Join Date: Jan 2005	PC coolers are barely enough for a TDA2030. __________________ The point of life is to build atleast one audio amplifier before you die.

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13th August 2011, 08:56 PM	#4
mindutis diyAudio Member Join Date: Apr 2008	It will be not enough.

13th August 2011, 10:16 PM	#5
ingenieus diyAudio Member Join Date: Apr 2011	I have often wondered how those liquid filled CPU coolers would work in an amp. Or something along that line, scaled up to do the job.

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