New heatsinks for my upcoming Aleph 5

elizard · 13th June 2003, 12:26 AM

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:

elizard · 13th June 2003, 12:27 AM

Here's another shot of it:

elizard · 13th June 2003, 12:31 AM

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.

elizard · 13th June 2003, 02:25 AM

no comments on the heatsinks?
I spent my dear money on these, i sure hope they're enough!!!

Peter Daniel · 13th June 2003, 02:32 AM

2 of them should be fine for one channel.

elizard · 13th June 2003, 02:35 AM

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?

Peter Daniel · 13th June 2003, 02:47 AM

Why not?

You got my address?

elizard · 13th June 2003, 02:51 AM

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.

roddyama · 13th June 2003, 02:51 AM

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.

elizard · 13th June 2003, 02:56 AM

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?

13th June 2003, 02:32 AM	#5
Peter Daniel diyAudio Member Join Date: Jul 2002 Location: Toronto, Canada	2 of them should be fine for one 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

13th June 2003, 02:47 AM	#7
Peter Daniel diyAudio Member Join Date: Jul 2002 Location: Toronto, Canada	Why not? You got my address? __________________ 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

13th June 2003, 02:51 AM	#9
roddyama diyAudio Moderator Emeritus Join Date: Jan 2002 Location: Michigan	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. __________________ Rodd Yamashita

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13th June 2003, 12:31 AM	#3
elizard diyAudio Member Join Date: Mar 2003 Location: Winnipeg, MB	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.

13th June 2003, 02:25 AM	#4
elizard diyAudio Member Join Date: Mar 2003 Location: Winnipeg, MB	no comments on the heatsinks? I spent my dear money on these, i sure hope they're enough!!!

13th June 2003, 02:35 AM	#6
elizard diyAudio Member Join Date: Mar 2003 Location: Winnipeg, MB	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?

13th June 2003, 02:56 AM	#10
elizard diyAudio Member Join Date: Mar 2003 Location: Winnipeg, MB	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! coughduring the summercough 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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