New Aleph 4 - heatsinks anyone? - diyAudio
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Old 4th December 2002, 03:09 AM   #1
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Default New Aleph 4 - heatsinks anyone?

New finished Alehp 4

Many thanks to Zenmaster Nelson for his support and use of his intelectual property. Also to Mark Finnis for the posted information related to this project that helped to accomplish my goal.
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Old 4th December 2002, 03:14 AM   #2
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Old 4th December 2002, 03:17 AM   #3
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Back panel
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Old 4th December 2002, 03:54 AM   #4
fcel is offline fcel  United States
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Looks great! Did you made the heatsink yourself?
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Old 4th December 2002, 05:30 AM   #5
grataku is offline grataku  United States
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Nice,
are you going to put on some type of tops and downs or are you just going to leave it open? How hot does it get down there in the summer?
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Old 4th December 2002, 06:18 AM   #6
jleaman is offline jleaman  Belgium
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that looks like a big beast. But looks nice too. why do you have 3 black binding postes per channel ? does it get realy hot. ?
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Old 4th December 2002, 11:50 AM   #7
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Beautiful!

What are the details of the power supply?

thanx
rt
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Old 4th December 2002, 05:04 PM   #8
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fcel

The heatsinks are cast alu. I made the design an had a modelist make a wood pattern, then a local supplier casted the parts.

Then the inner surface and surounding edges were milled.

Dimensions are L 21" W 10" H 2 5/8. The core is somthing less than 5/8", so fins are 2" spaced at 1 1/8"

These parts have the outer surface as casted, only a little cleaning at the foundry.

I have ordered 4 more pieces for future Aleph X. These will be shot blasted on the fin area and then machined.
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Old 4th December 2002, 05:29 PM   #9
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grataku,

Yes, I will have upper and lower lids, these will be spaced around 3/8 from the heatsink border. I have to find a place that will cut the needed dimensions of alu sheets.

It gets quite hot here in summer up to about 35/37° C inside houses whithout A/C.

I did add a thermal protection (75° C) but i dont think I'll have problems, since the heat sinks goes up about 27° over ambient at the hottest point behind the FET. So I figured that will have about 62/64° in a hot summer day. The power FET are spaced at 1 1/8" over the heatsink.
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Old 4th December 2002, 05:39 PM   #10
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JasonL

Ya, I knew that those binding post would call attention.

I used what I had at hand. Both upper should be red. I added two pairs because I like to biwire the speakers. The posts are wired individualy up to the star ground and up to the Source/Drain connection at the front end PCB.
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