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Post by cageyh on Mar 30, 2020 8:29:46 GMT
I had a bit of time this morning, so started reading the DIY Audio thread. It looks like Dansaan has built a dual mono into a 4U case, 400mm deep - See here.
To do this, he has used a mezzanine floor in the amp. I assume that I can use a sheet of aluminium for this, and support it well using a stand off in each corner of the mezzanine? |
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Post by Bigman80 on Mar 30, 2020 9:05:10 GMT
I had a bit of time this morning, so started reading the DIY Audio thread. It looks like Dansaan has built a dual mono into a 4U case, 400mm deep - See here.
To do this, he has used a mezzanine floor in the amp. I assume that I can use a sheet of aluminium for this, and support it well using a stand off in each corner of the mezzanine? You can. Good build that isnt it. |
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Post by cageyh on Mar 30, 2020 9:25:46 GMT
Yes. If I can get anywhere close to that, I will be happy.
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Post by Bigman80 on Mar 30, 2020 9:28:44 GMT
Yes. If I can get anywhere close to that, I will be happy. Would be too. Very nice |
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Post by firebottle on Mar 30, 2020 9:45:33 GMT
That's how the 286 is built, with a mezzanine plate holding the psu(s).
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Post by antonio on Mar 30, 2020 10:43:16 GMT
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Post by Bigman80 on Mar 30, 2020 11:03:16 GMT
When Tom builds them, he uses the MeanWell 27v SMPS. His official opinion is that his circuit is so agnostic that it doesn't need a Torroid to maximize performance and that the SMPS is as good. However, it's not. That's been my experience anyway. |
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Post by cageyh on Mar 30, 2020 11:20:44 GMT
Where can I buy a suitable plate (with small vent holes) to fit the PCBs above the traffics?
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Post by firebottle on Mar 30, 2020 11:27:37 GMT
Best thing is to buy a plate from a metal supplier on ebay, get a hole punch and make your own to the size required.
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Post by cageyh on Mar 30, 2020 11:31:47 GMT
Ok, thanks.
The main thing is that it is doable in a 4U chassis.
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Post by Bigman80 on Mar 30, 2020 11:34:51 GMT
Ok, thanks. The main thing is that it is doable in a 4U chassis. You can go to 36v in the 4U case. |
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Post by cageyh on Mar 30, 2020 11:38:27 GMT
I don’t want to stress the components by running at at max capacity, if that makes sense?
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Post by antonio on Mar 30, 2020 12:44:30 GMT
When Tom builds them, he uses the MeanWell 27v SMPS. His official opinion is that his circuit is so agnostic that it doesn't need a Torroid to maximize performance and that the SMPS is as good. However, it's not. That's been my experience anyway. Thank you, I have seen a your post earlier now and you are waiting on a toroid, or I presume 2 if you go mono. What about you Cagey and Alan? |
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Post by sq225917 on Mar 30, 2020 13:18:20 GMT
Looks like that sheet is copper clad board used as the earth plane for the psu and as a traffo shield. I'd stack the rectifier smoother board too.
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Post by cageyh on Mar 30, 2020 13:41:53 GMT
When Tom builds them, he uses the MeanWell 27v SMPS. His official opinion is that his circuit is so agnostic that it doesn't need a Torroid to maximize performance and that the SMPS is as good. However, it's not. That's been my experience anyway. Thank you, I have seen a your post earlier now and you are waiting on a toroid, or I presume 2 if you go mono. What about you Cagey and Alan? At the moment, I plan to get two. |
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