New heatsinks for my upcoming Aleph 5 - diyAudio
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Old 13th June 2003, 12:26 AM   #1
elizard is offline elizard  Canada
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Default New heatsinks for my upcoming Aleph 5

Well, I finished the gainclone and I'm loving it. So, I decided to take on another project, and although my wallet disagreed, I decided for an Aleph 5. I'm sure I won't be dissapointed.

I picked up 4 of these heatsinks:
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Old 13th June 2003, 12:27 AM   #2
elizard is offline elizard  Canada
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Here's another shot of it:
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Old 13th June 2003, 12:31 AM   #3
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The dimensions are 13.25"x7.375"x1.25", and they're slightly over 4lb each (there's still some available on ebay). They were $15 each plus shipping.

I'm thinking of doing 2 on each side. I got quoted some $80 for the needed aluminum panels ($80 canadian) from a local supplier, and another $20-$30 for the angled pieces. All in all it should be a $200 case made out of 1/4" aluminum.

As far as the other components go, I gotta save money before buying ANYTHING else! Including the aluminum.

I estimated the rating of the heatsinks to be about 0.25 C/W, giving me more than enough for an aleph. If anyone has corrections to that, or a better figure (or worse, but more correct) please let me know so I can figure somethin out.
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Old 13th June 2003, 02:25 AM   #4
elizard is offline elizard  Canada
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no comments on the heatsinks?
I spent my dear money on these, i sure hope they're enough!!!
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Old 13th June 2003, 02:32 AM   #5
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2 of them should be fine for one channel.
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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 13th June 2003, 02:35 AM   #6
elizard is offline elizard  Canada
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Peter - the man of the good news

Speakin of, to show my thanks for the chips you sent me, I'm getting some bright blue LED's (2000-3500mcds is what they're "rated" at) .. do you need a few?
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Old 13th June 2003, 02:47 AM   #7
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Why not?
You got my address?
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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 13th June 2003, 02:51 AM   #8
elizard is offline elizard  Canada
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I'm pretty sure I still do, if not i'll email you for it. I should get the LED's tomorrow, or monday. Expect some 15-20 your way by end of next week.

I'll put another 50-60 up for sale here, and keep 20-30 for myself.
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Old 13th June 2003, 02:51 AM   #9
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Hi elizard,

Those heatsinks should do fine for an Aleph 5. One per channel would almost be good enough in the Great White North, but two per channel will be comfortable.
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Old 13th June 2003, 02:56 AM   #10
elizard is offline elizard  Canada
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lol@the great white north comment

The ambient temperature in the house should never go past 25, even during HOT summer days. In winter it shouldn't drop past 18-20, even during the coldest of the days (-35 to -40). Its not THAT cold up here! *cough*during the summer*cough*

i wouldn't risk it for one per channel though.

One question I have however is how to mount the FET's. Should I go for 3 directly mounted to center of each heatsink? That should distribute the temperature pretty evenly (2 heatsinks will compose one side, two the other). Or should I use a piece of aluminum, mount them all to that piece, and then bolt the piece to the heatsink.

Somehow I see the first way being more cooling-efficient, while the second might have a more even temperature, although that's debatable.

Also, if I mount them directly to the heatsink, should I strip off the anodizing (somehow .. how?) where they'll be mounted?
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