| loovet |
This is my first thread on this forum...
I’m on my way to build an Aleph 1.7. And I would like to have some comments on the PCB layout I’ve done, my first one ever.
When drawing the prototype I prefer to do it with thin tracks, the final version will have broader ones.
/loovet |
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| skaara |
| I would split the psu and preamp. |
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| audioPON |
Nice work... but....
It seems like you have mixed something with the input and output signal.. Both input + / - are shorted with the ouput over R72 and R57.. The input signal also seems to be connected with C15,C16 and C14.. respective on the other phase..
I think you have placed the input at wrong place... it should be placed to R6 and R5
I think I would try to get som more space around the FET's. Easier to put some heatsinks on them.
Input/Output GND is connected with R3.. ??
I'm also working on a Aleph 1.7... Drawing it for 2-layer PCB, not wery easy.
>Per Olav |
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| loovet |
Thanks for the responds…
skaara: you are so right, to make the hole thing more flexible, I will separate the preamp and the PSU.
audioPON: you are so right too
- I have put the inputs at wrong places; the inputs should be at R5 and R6.
- I have considered more space around the FET’s. But since I will use Mcap capacitors, and these are not that small, I find it difficult to get this space. Do you have any ideas? First I’ve hade a thought about make it a double side one. But since this is my first project I was recommended to not.
- R3 symbolizes the pot that controls the gain of each channel. Are you going to have this pot or will you put a fixed resistor instead. And if so, which value will the resistor have?
/loovet |
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| audioPON |
I am not shure how much heat must be dissapated, maybe it is enoght with a alu. strip that is formed like an S og U...
I will keep the R3 pot. |
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| loovet |
any coments?
/loovet |
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| nickgreek |
Nice work loovet
I am working on a Aleph 1.7 here is my prototype |
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| Mark A. Gulbrandsen |
Nick, Looks nice, what type of coupling caps did you make room for there?
Mark |
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| loovet |
Nick, I think that you have done a nice work too.
How have you done the design, which program are you using?
/loovet |
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