DAC Mod Suggestions?

[Flappytango]

Hello All,
Im new to digital tinkering and am trying to get my feet wet playing with this DAC while i get educated.

This is an Entech Number Cruncher 203.2. As you see it has cs8412 and had a cs4329. I swapped it out for fun with a CS4390 and adding a 20pin socket. IT has a OPA2134.

Any thoughts on best place to start for upgrading?? Like which capacitors to replace? I see talk of opamp upgrades and clocks etc.
Im open to all sugestions!
Thanks

[Guido Tent]

Originally posted by Flappytango
Hello All,
Im new to digital tinkering and am trying to get my feet wet playing with this DAC while i get educated.

This is an Entech Number Cruncher 203.2. As you see it has cs8412 and had a cs4329. I swapped it out for fun with a CS4390 and adding a 20pin socket. IT has a OPA2134.

Any thoughts on best place to start for upgrading?? Like which capacitors to replace? I see talk of opamp upgrades and clocks etc.
Im open to all sugestions!
Thanks

clock upgrade is a must if you respect all bits.....

Guido

[Flappytango]

ok clock ive seen discussion of clock improvement being very rewarding.. ill look into it.

i dont understand how better triggering really allows you to respect the bits?

are those polyester caps worth replacing ? Is it best to do all or will any benefits come from selective replacement??

[Guido Tent]

Originally posted by Flappytango
ok clock ive seen discussion of clock improvement being very rewarding.. ill look into it.

i dont understand how better triggering really allows you to respect the bits?

are those polyester caps worth replacing ? Is it best to do all or will any benefits come from selective replacement??

Hi

The bits represent the amplitude. Conversion at wrong moment converts correct amplitude at wrong moment which yields distorrtion, at the end...........

regards

[fastcat95]

Hey Flappytango:

Since you have the CS8412 reciever chip, you might want
to try the Wildmonkysect analog filter mod for this chip.
Check out the link for more info on the stock and modified
values of the filter:

http://www.audioasylum.com/audio/twe...ges/30297.html
There are always the ideas of improved chip bypassing, better
power supplies, better op-amps (depending on the operation
mode of the DAC- current or voltage output?), better connectors,
better logic gates, etc.

Fastcat

[Guido Tent]

Originally posted by fastcat95
Hey Flappytango:

Since you have the CS8412 reciever chip, you might want
to try the Wildmonkysect analog filter mod for this chip.
Check out the link for more info on the stock and modified
values of the filter:

http://www.audioasylum.com/audio/twe...ges/30297.html


Fastcat

Hi

this is a great (cheap) upgrade, but does not bring you on the "real low jitter train" ..........

Ciao

[Peter Daniel]

Originally posted by Guido Tent


clock upgrade is a must if you respect all bits.....

And how one performs clock upgrade with a board like this? I don't see a clock here.

[Guido Tent]

Originally posted by Peter Daniel


And how one performs clock upgrade with a board like this? I don't see a clock here.

true, the clock might be the upgrade............

regards

[Peter Daniel]

So, you mean adding an extra clock? But where?

[ThorstenL]

Konnichiwa,

Originally posted by Flappytango
Im new to digital tinkering and am trying to get my feet wet playing with this DAC while i get educated.

This is an Entech Number Cruncher 203.2.

Any thoughts on best place to start for upgrading??

Sell it as is and build a Sealed Lead Acid Battery powered, TDA1543 based DAC, start with Fedde's ....

http://home.student.utwente.nl/f.s.b...io/nonoz3.html

Then play with more exterme stuff....

Sayonara