Heatsinks for Aleph

skaara · 14th September 2002, 02:34 PM

I will build aleph 2 or aleph x (100w one), I still have to decide on this, because they have equal dissipation, and I will start building chasis..

So heres the question, how many of heatsinks in following pics will I have to use, will 4 be enough for one channel? (They measures 14cm X 18cm X 6cm)

skaara · 14th September 2002, 02:38 PM

another pic of 4 heatsinks that I will use for 1 channel if it will be enough (otherwise 6?).

Peter Daniel · 14th September 2002, 02:49 PM

I'd say that 6 would be better. If dissipation of Aleph 2 is similar to A75 than you definitely need 6 per channel.

skaara · 14th September 2002, 02:52 PM

I think dissipation is 300W..

skaara · 14th September 2002, 10:49 PM

So 6 heatsinks is absolutely necessary for 300w dissipation (with longer life of devices in mind etc...)?

Peter Daniel · 14th September 2002, 11:06 PM

I think so, but if you are not shure you could run calculations if you know specs for your sinks. It's pretty well explained in A75 article on Pass site.

skaara · 15th September 2002, 11:20 AM

Dont know the specs, got them for free from a friend, I will use 6/ch. then..

vpharris · 15th September 2002, 11:32 PM

If you don't know the specs, two good options are...

Go to Aavid Thermalloy website http://www.aavidthermalloy.com/produ...products.shtml
and use the search engine to find a group of heatsinks similar to yours. With some effort you can start to draw some conclusion about the likely rating of your heatsinks. Helps to measure yours and figure the area of heatsink per unit length. (in.^2/in. or cm^2/cm).

Secondly, mount a power resistor to one of yours, dissipate some known amount of power (say, 20W), and measure the temperature rise. This is the best way to really know what you have.

skaara · 16th September 2002, 07:30 AM

Thanks, that helped alot

14th September 2002, 02:49 PM	#3
Peter Daniel diyAudio Member Join Date: Jul 2002 Location: Toronto, Canada	I'd say that 6 would be better. If dissipation of Aleph 2 is similar to A75 than you definitely need 6 per channel. __________________ www.audiosector.com “Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC

14th September 2002, 11:06 PM	#6
Peter Daniel diyAudio Member Join Date: Jul 2002 Location: Toronto, Canada	I think so, but if you are not shure you could run calculations if you know specs for your sinks. It's pretty well explained in A75 article on Pass site. __________________ www.audiosector.com “Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC

15th September 2002, 11:32 PM	#8
vpharris diyAudio Member Join Date: Dec 2001 Location: Philadelphia	Heatsink specs If you don't know the specs, two good options are... Go to Aavid Thermalloy website http://www.aavidthermalloy.com/produ...products.shtml and use the search engine to find a group of heatsinks similar to yours. With some effort you can start to draw some conclusion about the likely rating of your heatsinks. Helps to measure yours and figure the area of heatsink per unit length. (in.^2/in. or cm^2/cm). Secondly, mount a power resistor to one of yours, dissipate some known amount of power (say, 20W), and measure the temperature rise. This is the best way to really know what you have. __________________ Vince Harris

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14th September 2002, 02:52 PM	#4
skaara diyAudio Member Join Date: Jun 2002 Location: Europe, Slovenia	I think dissipation is 300W..

14th September 2002, 10:49 PM	#5
skaara diyAudio Member Join Date: Jun 2002 Location: Europe, Slovenia	So 6 heatsinks is absolutely necessary for 300w dissipation (with longer life of devices in mind etc...)?

15th September 2002, 11:20 AM	#7
skaara diyAudio Member Join Date: Jun 2002 Location: Europe, Slovenia	Dont know the specs, got them for free from a friend, I will use 6/ch. then..

16th September 2002, 07:30 AM	#9
skaara diyAudio Member Join Date: Jun 2002 Location: Europe, Slovenia	Thanks, that helped alot

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