Hello everybody.
I have some new PCM1730´s, and a pair of recycled PCM58pk´s with companion 8 times digital filter SM5803 (npc), salvaged from a defunct cdp.
As spdif receiver, I have CS8414 -real p.i.t.a. to find one here in Buenos Aires-.
Those chips are begging for some action.
I studied a lot, in the recent days, about dac grounding, etc.. My head is aching. But I´m willing to take the chance and make something decent -but relatively simple- with those chips.
I ask the following ¨multiple choice¨ question to Those Who Know:
What´s the worthest thing to do?
a)CS8414 plus PCM1730
b)CS8414 plus PCM58 (non os)
c)cs8414 plus sm5803 plus PCM58
d) None of the above, and live a life of tranquility...
Pcm1730 is very hard to solder, but I´ve managed to mount it over a ground plane, ¨dead spider style¨, with tiny cables all around. Not the neatest thing concerning parasitics, but I was thinking about shielding it in a tiny cage of copper.
The other chipos are a breeze to solder compared to that...
I have no access to make a pcb, so I stuck with the common available stuff.
Thank you very much for your input!
I have some new PCM1730´s, and a pair of recycled PCM58pk´s with companion 8 times digital filter SM5803 (npc), salvaged from a defunct cdp.
As spdif receiver, I have CS8414 -real p.i.t.a. to find one here in Buenos Aires-.
Those chips are begging for some action.
I studied a lot, in the recent days, about dac grounding, etc.. My head is aching. But I´m willing to take the chance and make something decent -but relatively simple- with those chips.
I ask the following ¨multiple choice¨ question to Those Who Know:
What´s the worthest thing to do?
a)CS8414 plus PCM1730
b)CS8414 plus PCM58 (non os)
c)cs8414 plus sm5803 plus PCM58
d) None of the above, and live a life of tranquility...
Pcm1730 is very hard to solder, but I´ve managed to mount it over a ground plane, ¨dead spider style¨, with tiny cables all around. Not the neatest thing concerning parasitics, but I was thinking about shielding it in a tiny cage of copper.
The other chipos are a breeze to solder compared to that...
I have no access to make a pcb, so I stuck with the common available stuff.
Thank you very much for your input!
Hi,
if you are a handyman, why not try make some modules for each chip and a decent reuseable output stage to check out for all combinations.
I would love to see the dead spider cause i like it when diyaudio becomes art
shalom
Josch
if you are a handyman, why not try make some modules for each chip and a decent reuseable output stage to check out for all combinations.
I would love to see the dead spider cause i like it when diyaudio becomes art
shalom
Josch
Josch, it would be very interesting to do a ¨tandem dac¨, but pcm1730 has dual diff. outputs and pcm58 don´t.
Two different output stages would be too much fiddling...
For pcm1730 I was thinking in active IV via opa1632 dual diff. opamp, configured as simple active filters, like the IVY linestage of Twisted Pearl audio: http://www.twistedpearaudio.com/docs/linestages/ivy_schematic.pdf
but substituting LM4562 for TPA6120 for convertion to single ended, cause I have some in my box and I like very much it´s sound when used as line driver.
But the idea is seductive, of course.
Two different output stages would be too much fiddling...
For pcm1730 I was thinking in active IV via opa1632 dual diff. opamp, configured as simple active filters, like the IVY linestage of Twisted Pearl audio: http://www.twistedpearaudio.com/docs/linestages/ivy_schematic.pdf
but substituting LM4562 for TPA6120 for convertion to single ended, cause I have some in my box and I like very much it´s sound when used as line driver.
But the idea is seductive, of course.
this is what the pcm1730 looks like
An externally hosted image should be here but it was not working when we last tested it.
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