Need help with suggestions on laying out the DAC components.

headrott

I have a few layouts for the components for my DAC, but I wouldlike other peoples' suggestions on how they think I should lay them out.

Ben, can you call me and maybe we can talk about the layout if you have some time?

If anyone has some good suggestions on the layout please post them here. Thank you for your help.

Greg

gimpod

Boy you weren't kidding when you said you were in the middle of building a dac. :cool:

The only thing I would do is move the 2 Iron core transformers in line with the Toroidal transformer. On second thought I would rearrange the whole Power Supply section so that it was as far away from everything else as possible.

ben62670

gimpod wrote: »

Boy you weren't kidding when you said you were in the middle of building a dac. :cool:

The only thing I would do is move the 2 Iron core transformers in line with the Toroidal transformer. On second thought I would rearrange the whole Power Supply section so that it was as far away from everything else as possible.

Yep

headrott

Thanks for the suggestions Tony and Ben. One thing with the transformers is that the 2 R-core ones only have about 5 to 6 inch wires on them so there is only so far I can move them from the input terminals on the far left and right of the Tubeizator boards (in the purple squares).

However, I could use that terminal (on the extreme right towards the front) to "extend" the wires on the R-cores, and toroidal transformers to move them towards the front. But, that just adds another power weakening link in the chain. Do you guys think it's worth it?

I am of course going to keep the transformers as far away from the PCBs as possible though as it is now. Let me know what you guys think.

Greg

gimpod

Greg,

Can you rotate the Tubeizator boards 90 deg. That would also shorten up the anolog output leads.

headrott

If I do rotate the tubeizator boards 90 degrees I cannot fir the Buffalo II DAC in the middle of them, unfortunately.

I could turn them 90 degrees and then move the Buffalo II to the back of the chassis along with the SPDIF/MUX reciever. This would mean extending the power cable lines to each board though (Buffalo II and SPDIF/MUX).

Is it better to have the power lines shorter or the analog lines shorter?

Greg

gimpod

headrott wrote: »

I could turn them 90 degrees and then move the Buffalo II to the back of the chassis along with the SPDIF/MUX reciever. This would mean extending the power cable lines to each board though (Buffalo II and SPDIF/MUX).

This is probably your best bet. And yes it's best to try and keep your analog I/O leads as short as possible.

disneyjoe7

I would arrange the PCB so everything is short wiring to each, but keeping the power supplies far from everything else.

headrott

gimpod wrote: »

This is probably your best bet. And yes it's best to try and keep your analog I/O leads as short as possible.

I tried rotating the tubeizator boards 90 degress, but the capacitors get in each others way so I have to move one tubeizator board forward more than the other. Overall it doesn't work as well this way. Things get in each others way and the transformers overall are closer to the tubeizator boards and the HV shunt boards are further away from the tubeizators. The analog wires from the tubeizators are barely shorter, but not that much (maybe 2 inches).

One question I had about hooking the transformers up to the power distribution block I got, and hooking up the AC power into the power distirbution block (from the IEC socket). If I have a 2 position input and 4 (2 position) outputs. If I hook the "Live" wire from the IEC socket to one position on the block and the "return" wire to the other input position on the power distribution block, how do I hook the 4 primary leads on the R-core transformer and toroidal transformer into the output of the power distribution block? Do I hook the 2 primaries in parallel (the red and green 115V primary) together and put them in the "Live" output of the power distribution block. then hook the orange and yellow 115V primary (in parallel) on the R-core transformer and put these in the "return" output position on the power distribution block? Then do the same for the other R-core and the toroidal transformer? I got 30 minutes of sleep last night and am probably not thinking well. Thanks again for your help.

Greg

gimpod

Greg, Sorry to thread jack but you need to get hold of me by PM, e-mail of call (before 6:00pm PST)