| MWP |
I know there are lots of these "success" threads, but this amp is a little different :)
As far as i can tell so far, it works perfectly.
Now i just have to build another 2 of them (i need 6 channels for active xovers).
There are two audio channels on this board each using:
SPDIF-IN -> DIR1703 -> PCM1798 -> 2*OPA627 -> 2*LM3886 (bridged)
Schematic here:
http://www.overclockers.com.au/~mwp...wp-dac-amp1.pdf
Yay :D |
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| carlosfm |
:cool:
MWP, does the DIR1703 work fine?
With different sample rates?
It seams that the DIRs had a problem and TI took them out, no DIRs anymore.:bawling: |
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| MWP |
| quote: | Originally posted by carlosfm
:cool:
MWP, does the DIR1703 work fine?
With different sample rates?
It seams that the DIRs had a problem and TI took them out, no DIRs anymore.:bawling: |
It works fine with 44.1 and 48Khz without a reset between the change.
I tried with 96Khz which didnt work, but thats probably beacuse of the cheapie optical recievers im using.
Im glad i have a bit of a stash of DIR1703's here :) |
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| MWP |
Wow.
This dac/amp sounds pretty damn good.
A little 50Hz hum on one of the channels, but that should be easily fixed.
The other channel is 100% quiet with no audio... exactly what im after since i sit under 1 meter from my speakers. |
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| thomas997 |
wow looks good.
How much was the approximate cost for all that?
You should sell some :) |
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| MWP |
| Building the full amp (3 of those PCBs, 3*300VA torids, 19" 3U case, misc stuff) has cost me ~$800AU (~$550US). |
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