Going over 1.6V can fry the chip. At least I have blown one chip up by doing this, can't recall if it was a 1545 or a 1387 though.
Haven't shown a complete schematic for the LAID DAC just outlined how it goes on the blog. I also built a DAC with 19 chips doing 2X oversampling without any digital filter two summers ago![Big grin :D :D](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Haven't shown a complete schematic for the LAID DAC just outlined how it goes on the blog. I also built a DAC with 19 chips doing 2X oversampling without any digital filter two summers ago
You'd have to read my blog on the 'LAID' architecture to find out the details. I was using an analog FIR filter to do it.
In the end I abandoned that as NOS with a passive filter sounded better. NOS is better sounding I think because there are fewer glitches in the output. Passive filtering reduces the audio band glitching even further.
In the end I abandoned that as NOS with a passive filter sounded better. NOS is better sounding I think because there are fewer glitches in the output. Passive filtering reduces the audio band glitching even further.
hi..
today, i tried to lower the VRef voltage to 1.6v
but the result was disappointing
.the sound gets more warm characteristics but it's distorted and i should turn on and off my DAC several times to got the sound comes out (maybe the chips couldn't get the callibration?..or just my phone's USB out being dumb?)
i also got some shock after touched 430V supply and sudden sound (the chips was loosen after i modded my USB-spdif output which results the sound was distorted so much
.when i touched the chips the sound went freakin loud
)
spdif coupling caps also play role here![scratch :scratch: :scratch:](https://files.diyaudio.com/forums/images/smilies/scratch1.gif)
i changed my wima mpk10 0.1uF from my x-fi digital out to a 10pf ceramic and now it sounds more warm yet the high sounds better![scratch :scratch: :scratch:](https://files.diyaudio.com/forums/images/smilies/scratch1.gif)
i have no idea why the digital coupling caps can sounds different![Confused :confused: :confused:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
today, i tried to lower the VRef voltage to 1.6v
but the result was disappointing
i also got some shock after touched 430V supply and sudden sound (the chips was loosen after i modded my USB-spdif output which results the sound was distorted so much
![blush :blush: :blush:](https://files.diyaudio.com/forums/images/smilies/blush.gif)
spdif coupling caps also play role here
![scratch :scratch: :scratch:](https://files.diyaudio.com/forums/images/smilies/scratch1.gif)
i changed my wima mpk10 0.1uF from my x-fi digital out to a 10pf ceramic and now it sounds more warm yet the high sounds better
![scratch :scratch: :scratch:](https://files.diyaudio.com/forums/images/smilies/scratch1.gif)
i have no idea why the digital coupling caps can sounds different
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