Tír Na HiFi

OK, thanks but I'm not sure what this is a graph of (or many graphs overlaid)? I presume you changed all out-of-spec resistors & you are getting no reduction in harmonics but rather random increases in different harmonics? so matching the resistors doesnt resolve or stablise? thanks for replyin...

The accuracy of the resistors does determine the linearity of the DAC's output & the location of that out-of-spec resistor will determine which bit's voltage level it is affecting - obviously resistor on the most significant bits (MSB) will output the highest voltages so any linearity issues he...

Thanks Alecm - great work Are you sure that is the correct schematic for the resistor network - it can't work if bits 0,1 & 2 aren't connected to a a 574 chip output? You traced this schematic from the Soekris board, I presume? Yes, each resistor connected to corresponding 574 output. And yes, ...

if theres any mods we haven't done let us know please thanks, i will do) MOD - arms adjustment Sometimes this mod is very effective and significant. But very depends from each sample of Soekris DAC. The idea is voltage adjustment in the arms of soekris dac. This modification is very simple to imple...

nige2000, many thanks for brave steps, i waiting for clock changes long time. for sure i will try the same. I like this thread. Here is lots of interesting researches. Thanks for sharing your experience. 5 different Soren DACs were researched and heavily moded(almost all mods described here and even...