I have in mind Salas low voltage regulator, but there is a specific or non specific Nelson Pass shunt regs for the I/V?
Papa isn't shunt aficionado , as ZM is 
use whatever you want , but - please - do not use any with scarce jfets in it
use whatever you want , but - please - do not use any with scarce jfets in it
Borbely isn't shunt aficionado too, I only see a shunt for DAC purpose & I imagine due to high demand of Borbely users, Merlin is 
Have I to measure & adjust to 0VDC at input also once is connected the DAC?
Have I to measure & adjust to 0VDC at input also once is connected the DAC?
it's hard to say that Papa B. isn't shunt aficionado , when he made one of most brute shunt regs around
anyway - whatever you change - you must recheck that important point .
if you have no intention to use proper shunt instead of dreky LMs - at least put proper cap multipliers between them and D1 ;
anyway - whatever you change - you must recheck that important point .
if you have no intention to use proper shunt instead of dreky LMs - at least put proper cap multipliers between them and D1 ;
Yes Papa B. done the must brutus shunt reg I ever seen with a lot of caps & heatsink only to feed a pcm1704 DAC.....
You could also use multiple PCM1704. When I updated the D1 to 96K that was what we used on a PCM63 plug in board.
The PCM1704 was used for the 24/96 update. The PCM63 was only 20 bits.
I still like the PCM63 sonics and the guys who designed both like the 63 better for some internal reason. The 1704 had less current swing hence the use of two.
I still like the PCM63 sonics and the guys who designed both like the 63 better for some internal reason. The 1704 had less current swing hence the use of two.
Like this:
An externally hosted image should be here but it was not working when we last tested it.
Wich is the maximum value for R6 to increase gain without increase to much the distortion?
Yes promteus do a pcb but no longer available. http://www.diyaudio.com/forums/swap-meet/51962-diy-d1-i-v-stage-pass-dac-pcbs-sale.html
Cheers
Felipe
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the dc offset has nothing to do with the input dc, which is totally swamped by the dc of the actual circuit, which is quite massive and needs good caps
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