DAC Mod Suggestions? - diyAudio
Go Back   Home > Forums > Source & Line > Digital Source

Digital Source Digital Players and Recorders: CD , SACD , Tape, Memory Card, etc.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 30th January 2004, 03:10 AM   #1
diyAudio Member
 
Join Date: Jan 2004
Location: Sweden
Default DAC Mod Suggestions?

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
Attached Images
File Type: jpg entech_203.2.jpg (73.3 KB, 1151 views)
  Reply With Quote
Old 30th January 2004, 12:39 PM   #2
diyAudio Member
 
Join Date: Dec 2001
Location: Eindhoven
Default 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
__________________
Guido Tent
www.Tentlabs.com
  Reply With Quote
Old 31st January 2004, 04:27 PM   #3
diyAudio Member
 
Join Date: Jan 2004
Location: Sweden
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??
  Reply With Quote
Old 1st February 2004, 10:40 AM   #4
diyAudio Member
 
Join Date: Dec 2001
Location: Eindhoven
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
__________________
Guido Tent
www.Tentlabs.com
  Reply With Quote
Old 1st February 2004, 09:49 PM   #5
diyAudio Member
 
Join Date: Jul 2003
Location: Indiana
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
  Reply With Quote
Old 2nd February 2004, 07:31 PM   #6
diyAudio Member
 
Join Date: Dec 2001
Location: Eindhoven
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
__________________
Guido Tent
www.Tentlabs.com
  Reply With Quote
Old 2nd February 2004, 07:38 PM   #7
diyAudio Member
 
Peter Daniel's Avatar
 
Join Date: Jul 2002
Location: Toronto, Canada
Send a message via AIM to Peter Daniel
Default 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.
  Reply With Quote
Old 2nd February 2004, 07:47 PM   #8
diyAudio Member
 
Join Date: Dec 2001
Location: Eindhoven
Default 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
__________________
Guido Tent
www.Tentlabs.com
  Reply With Quote
Old 2nd February 2004, 07:49 PM   #9
diyAudio Member
 
Peter Daniel's Avatar
 
Join Date: Jul 2002
Location: Toronto, Canada
Send a message via AIM to Peter Daniel
So, you mean adding an extra clock? But where?
  Reply With Quote
Old 2nd February 2004, 08:00 PM   #10
Previously: Kuei Yang Wang
 
Join Date: Nov 2002
Default 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
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
need amp suggestions please. kendt Tubes / Valves 14 23rd February 2009 01:13 AM
First DIY. Suggestions are welcome. RomanSivers Multi-Way 3 19th December 2006 04:29 PM
SET Suggestions nogoodboyo Tubes / Valves 37 11th March 2006 08:38 AM
need suggestions please.. oface Full Range 2 23rd March 2005 04:46 AM
Any suggestions jaybird Multi-Way 3 15th January 2004 09:12 PM


New To Site? Need Help?

All times are GMT. The time now is 06:56 PM.


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