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Old 19th June 2003, 08:58 PM   #21
JayV is offline JayV  Sweden
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when i get the components from germany i'll include them in the 3d pic... i havent made the layout yet.. i don't want to waste time using wrong footprints...
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Old 19th June 2003, 09:10 PM   #22
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How much do those heat sinks cost in Euros?
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Old 19th June 2003, 09:17 PM   #23
JayV is offline JayV  Sweden
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about Ä100 for 100 cm, 25cm should be just perfect for one channel... the C/W is 0,03 @ 10 litres/minute and 500W (for a 20 cm long cooler)

http://www.elfa.se/pdf/75/07563109.pdf
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Old 19th June 2003, 09:27 PM   #24
JayV is offline JayV  Sweden
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should keep the amp pretty cold

i plan to build one box with pump, radiator, tank, and four transformators, then houses and 45-50V AC to the amplifiers (the caps is in the amp boxes). With this construction it should be easy (and cheap) to make only one safety circuit if the waterflow stops. And its nice to have the transformators a bit away!

http://www.elfa.se/images/highres/h11081.jpg
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Old 21st June 2003, 11:20 PM   #25
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Actually, I could make that heat sink for just the price of a block of alumnium with the same dinensions and a couple of hours of my time. A 1" thick block could be milled to be relieved like thge one shown, and then both sides bored out for the water channels. For those equipped to do so this would be a very inexpensive thing to do. The block of 1" alumnium would cost me less than 15.00 U.S., and the price for the fittings is pretty trivial.
Mark
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Old 22nd June 2003, 01:51 AM   #26
JayV is offline JayV  Sweden
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i wish i had that kind of tools
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Old 28th June 2003, 03:38 PM   #27
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JayV,
Hows the PCB comming along? I am anxious to build a pair of 2's with your design and a heatsink machined from a piece of solid copper plate.
Mark
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Old 29th June 2003, 03:02 AM   #28
JayV is offline JayV  Sweden
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i just recived the components from germany i'll get to it soon, i just got vacation!
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Old 29th June 2003, 07:33 PM   #29
JayV is offline JayV  Sweden
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Question new design

I belive i'll make my own heatsinks of copper instead... Size is 75*20*200 mm with 4 10mm holes and brass pipes soldered to it. The pcb is 160*200mm. 10mm space between the pcb and heatsink so the most of the components should fit nice!
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Old 29th June 2003, 07:36 PM   #30
JayV is offline JayV  Sweden
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possible design, a little inspired by tube amps..
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