Many thanks guys!
I should have pointed out that I have 2 extra main boards for those who may prefer to make their own PCB's, as the filter board is single sided and can be made by a hobbyist. You could also make a PCB for the specific output circuit option you chose to build.
As for a lessons learned regarding the boards, the main issue is that the filter boards curled slightly over time. I do not know much about PCB's so I assume this is a manufacturing problem. It was not a storage problem on my part.
I would thus recommend that if Marcel is updating the PCB, he add both a solder mask (which is no charge for Chinese PCB manufacturers), and an additional 2 mounting holes for a total of 6 at least.
Also, I would recommend that if ordering PCB's from this same board revision, the filter board be specified as 2.0mm, which should be a small cost adder since it is a single sided board.
I should have pointed out that I have 2 extra main boards for those who may prefer to make their own PCB's, as the filter board is single sided and can be made by a hobbyist. You could also make a PCB for the specific output circuit option you chose to build.
As for a lessons learned regarding the boards, the main issue is that the filter boards curled slightly over time. I do not know much about PCB's so I assume this is a manufacturing problem. It was not a storage problem on my part.
I would thus recommend that if Marcel is updating the PCB, he add both a solder mask (which is no charge for Chinese PCB manufacturers), and an additional 2 mounting holes for a total of 6 at least.
Also, I would recommend that if ordering PCB's from this same board revision, the filter board be specified as 2.0mm, which should be a small cost adder since it is a single sided board.
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Thanks for the heads up. I'll likely drill additional mount holes and see about slowly uncurling the boards via mounting pressure.
Yup, that's most probably the best way. Mounting isn't hardest part though, for best results you need to get the PCB flat for soldering. That will require a little effort.
They are not heavily curled. After all, they had to be manufactured flat.
IMHO soldering curled and then mounting flat is just asking for a stress crack in a solder joint. I would just clamp them flat with say a few pieces of scrap wood on the edges and then solder.
IMHO soldering curled and then mounting flat is just asking for a stress crack in a solder joint. I would just clamp them flat with say a few pieces of scrap wood on the edges and then solder.
Hi all,
I think I found a way to use TE0630 LX45 modules instead of LX75 modules, see posts 1482 and beyond of the valve DAC technical thread:
https://www.diyaudio.com/forums/dig...linear-audio-volume-13-a-149.html#post6537949
https://www.diyaudio.com/forums/dig...linear-audio-volume-13-a-150.html#post6558234
I think I found a way to use TE0630 LX45 modules instead of LX75 modules, see posts 1482 and beyond of the valve DAC technical thread:
https://www.diyaudio.com/forums/dig...linear-audio-volume-13-a-149.html#post6537949
https://www.diyaudio.com/forums/dig...linear-audio-volume-13-a-150.html#post6558234
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