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Old 23rd August 2001, 05:30 AM   #1
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The majority of the projects here seem to require large heatsinks in their design. They seem to be difficult to find and generally expensive.

To help others overcome this stumbling block, I am hoping that those who have found good places to buy heatsinks will reply to this thread.

http://www.imimarston.co.uk
-really nice aleph style case can be made for US$500

http://www.r-theta.com
-quoted US$200 for two heatsinks for aleph5

http://www.meci.com
-various cheap smaller heatsinks for the PCB components
-cheap large caps for aleph projects

As you can see, I haven't had much luck finding a cheap heatsink that can dissipate >100W a piece
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Old 23rd August 2001, 02:49 PM   #2
rborer is offline rborer  Brazil
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http://www.fischerelektronik.de
- Fischer has some nice extrusions, and even ready-made cabinets.
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Old 23rd August 2001, 04:18 PM   #3
mlloyd1 is offline mlloyd1  United States
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Yes, it's difficult for DIYers to obtain large dissipation heat sinks and suitable chassis! I don't have the tools or ability to to my own machining. For my heavy duty class A sinks, I also ended up going the custom route with R-Theta for heat-sinks. In the past, I have used some Fischer sinks obtained from Erno Borbely to use with some projects I purchased through his company. I recently visited his site and noticed he sells chassis with integrated heat sink.

Michael
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Old 15th July 2003, 02:13 AM   #4
Elkaid is offline Elkaid  Canada
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I found the following manufacturer :

http://www.thermaflo.com/index.shtml

I'll contact them tomorrow. Hopefully, they seems to care about diyers and small quantities which is not the case for all manufacturers. (Well, not every distributors).

Regards
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Old 15th July 2003, 02:22 AM   #5
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another source is to go ebay and you will find some of them - not cheap but at least available.

On a similar note: does anyone know where I can find 1) large sheet of silpads? I want to be able to cut my own shapes; and 2) mounting kits like the washers? I have been using small plastic tubing that isn't the most desirable thing in the world.
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Old 15th July 2003, 03:18 AM   #6
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Digi-Key carry it.
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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
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Old 15th July 2003, 12:56 PM   #7
Elkaid is offline Elkaid  Canada
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I think the digikey part number for the mounting kit is

RP450-ND
RP451-ND
...
RP457-ND

depending on diameter needed. They'll replace the little tube you're currently using and you'll be able to use metallic screw without any contact between the IC and the heatsink.

As for the silpad, there's really too much of them to list them all

I hope this helps !
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Old 15th July 2003, 04:54 PM   #8
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I know Schuro can order any heatsink (or other item) from Fischer at small amounts. They also have heatsinked 19" cabinets. Heatsinking pad in sheets is available.
check the Fischer site and download the I-group pdffor all mounting / pads and the A group for heatsinks.
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Old 15th July 2003, 05:35 PM   #9
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I purchased heatsinks for my Aleph-5 monoblocks from Conrad Engineering and am very happy with both the quality and the price. You can contact Julian Wales at:

Ph.: 61 3 9387 7106
Fax.: 61 3 9387 2896
Email: conrad.aus@bigpond.com
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Old 16th July 2003, 05:24 PM   #10
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Don't forget, Conrad now have a web page for their heatsinks, you can find it here

Andrew.
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