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Old 22nd October 2002, 07:22 PM   #11
cowanrg is offline cowanrg  United States
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but (original question once again), 1 18" section per channel would be enough cooling? vertically or horizontally?

i assume that 2 18" sections per channel is enough also...

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Originally posted by BrianGT
I was thinking of the wrong heatsinks... I was thinking of the other big heatsinks that they used to offer.

Cutting them in half seems like the best plan to me and would provide a better looking chassis.

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Old 22nd October 2002, 07:24 PM   #12
BrianGT is offline BrianGT  United States
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I don't think that one 18" would be enough.

I would instead, cut the heatsink in 3 even pieces, buying 3 heatsinks total, and using 4 of these pieces per channel, orientating the fins vertically.

That would give you 2 chassis that would be ~8" high and 21" deep.

I would then use one of these chassis per channel. You could then mount 3 devices on each of the heat sinks in the big middle part.

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Old 22nd October 2002, 07:34 PM   #13
BrianGT is offline BrianGT  United States
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Similar to this, but with your heatsinks:

Click the image to open in full size.

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Old 4th November 2002, 08:20 PM   #14
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Brian:

Do you think a plastic/aluminum blade in a chop saw would work to cut these?

I assume a bandsaw would be best, but I don't have one of those. Table saw and a chop saw I do have, and I've cut aluminum in those (with backing), but these heatsinks have a lot of fins, I'm not sure how well that would work.
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Old 4th November 2002, 08:25 PM   #15
BrianGT is offline BrianGT  United States
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I would think that if you had the right blade and clamped it down tightly, you could get a good cut with the chopway (it is the same as a sliding miter saw, right?)

More pictures of PedroPO's amp in this thread:
Powering up a aleph 5 procedure.

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Old 4th November 2002, 08:36 PM   #16
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Thanks

Correct, it's a woodworking saw, although it doesn't slide. It's a 12" compound miter saw.

I've seen problems with thin pieces (1/8") of Al (L piece) going through the table saw; sometimes the piece of Al 'flexes' and then it tends to 'shoot'. I started clamping a piece of wood on the top of the Al L, in addition to the wood fence behind it.

Kickback is not fun but that should be less of an issue with the Compound Miter saw.
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