diyAudio

diyAudio (http://www.diyaudio.com/forums/)
-   Digital Source (http://www.diyaudio.com/forums/digital-source/)
-   -   DAC Mod Suggestions? (http://www.diyaudio.com/forums/digital-source/27150-dac-mod-suggestions.html)

Flappytango 30th January 2004 03:10 AM

DAC Mod Suggestions?
 
2 Attachment(s)
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 30th January 2004 12:39 PM

Re: DAC Mod Suggestions?
 
Quote:

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 31st January 2004 04:27 PM

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 1st February 2004 10:40 AM

Quote:

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 1st February 2004 09:49 PM

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 2nd February 2004 07:31 PM

Quote:

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 2nd February 2004 07:38 PM

Re: Re: DAC Mod Suggestions?
 
Quote:

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 2nd February 2004 07:47 PM

Re: Re: Re: DAC Mod Suggestions?
 
Quote:

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 2nd February 2004 07:49 PM

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

ThorstenL 2nd February 2004 08:00 PM

Re: DAC Mod Suggestions?
 
Konnichiwa,

Quote:

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


All times are GMT. The time now is 05:29 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio


Content Relevant URLs by vBSEO 3.3.2