Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Digital Line Level DACs, Digital Crossovers, Equalizers, etc.

A NOS 192/24 DAC with the PCM1794 (and WaveIO USB input)
A NOS 192/24 DAC with the PCM1794 (and WaveIO USB input)
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 7th April 2014, 08:29 PM   #1491
Supersurfer is offline Supersurfer  Netherlands
diyAudio Member
 
Join Date: Feb 2013
Hi guys,

I found some nice chokes:lundahl ll1694

I am thinking of this:
Simple but large EI transformer-rectifiers( have to find some nice ones, quality here is very important)-cap- choke-cap-choke-cap

I have some black gates 3300uf16v, and also elna silmic 4700uf 16v.

The transformer can be a 9v type.

Regards,
  Reply With Quote
Old 7th April 2014, 08:33 PM   #1492
Sovereign1 is offline Sovereign1  United Kingdom
diyAudio Member
 
Join Date: Dec 2013
Location: Maidstone
There is a company over here called Canterbury windings who make audio grade toroidal transformers, he is a thoroughly decent chap and will probably make what ever you want. I'm currently waiting on a 300va and a 150va toroid for the DAC and digital psu
  Reply With Quote
Old 7th April 2014, 08:53 PM   #1493
stijn001 is offline stijn001  Netherlands
diyAudio Member
 
stijn001's Avatar
 
Join Date: Dec 2011
Amplimo do a 160VA 2x9V
  Reply With Quote
Old 7th April 2014, 09:07 PM   #1494
Supersurfer is offline Supersurfer  Netherlands
diyAudio Member
 
Join Date: Feb 2013
I have a feeling toroidal is less good than EI cores..........
  Reply With Quote
Old 7th April 2014, 09:22 PM   #1495
G600 is offline G600  France
diyAudio Member
 
Join Date: Jan 2014
Location: Amiens
Yes but you have to deal with higher radiation with EI cores... and in a low current circuit...
Seems to be pretty hard to overcome in a single chassis, unless you find the very few manufacturers capable of winding EI cores with some "secrets" that make the difference but costs a lot.

Generally where would you buy EI cores ? I can't find online stores for them.
  Reply With Quote
Old 7th April 2014, 10:37 PM   #1496
PET240 is offline PET240  Australia
diyAudio Member
 
Join Date: Feb 2010
Location: Brisbane Northside
See a sheet metal shop and fold up a zic coated box that fully encloses the tranny. We use an EI in the Killerdac with no ill effects, they only leak from where the laminations join. Make sure the shield is ferrous material. Also an r core tranny is worth looking into as well...

Chuz,

Drew.
  Reply With Quote
Old 8th April 2014, 02:24 AM   #1497
PET240 is offline PET240  Australia
diyAudio Member
 
Join Date: Feb 2010
Location: Brisbane Northside
Try zinc, zic could be a little hard to get.....
  Reply With Quote
Old 8th April 2014, 10:19 AM   #1498
maro73 is offline maro73  France
diyAudio Member
 
Join Date: Sep 2013
Location: France
Quote:
Originally Posted by PET-240 View Post
Try zinc, zic could be a little hard to get.....
Hello
Has anyone tried to change the power supply of the DDDAC for some power supplies or voltage regulators from Paul Hynes ?
Thanks
  Reply With Quote
Old 8th April 2014, 01:30 PM   #1499
rhlauranna is offline rhlauranna  Germany
diyAudio Member
 
Join Date: Sep 2005
thank you, for all those who asked for a closer look onto Bernd's monster controlled power supply, now "finished" in a cabinet, weighing more than 20 kilograms, here it is:

A NOS 192/24 DAC with the PCM1794 (and WaveIO USB input)


and for more have a look here:

http://killerdac.com/forum/index.php/topic,842.200.html

No. 205

but please, don't ask me for details, regarding your questions go ahead and ask Bernd himself:

berndwieland11@web.de

thanks

Last edited by rhlauranna; 8th April 2014 at 01:44 PM.
  Reply With Quote
Old 8th April 2014, 02:59 PM   #1500
stijn001 is offline stijn001  Netherlands
diyAudio Member
 
stijn001's Avatar
 
Join Date: Dec 2011
Ok, here’s one for you. I’ll probably be shot for suggesting this. But it’s been bothering me that with only using single-ended output I’m in affect only using half the power/gain output of the DDDAC, by connecting either ENG or POS and common and I could do with a bit more gain anyway. I was also curious about the amount of DC de DDDAC produced. Well in my case it was 0.008Vdc&0.000Vdc R/L respectively. So I thought what the heck, it will be a nice experiment to do away with the output buffer caps and since I knew what Rload resistance was in my power amp (I put it there), I got rid of Rload in the DDDAC too. So now I’ve connected POS/NEG single-ended RCA out to my amp. I’m sitting here listening to it now and I can not put any fault to it, if anything it sound better with +/-15Db more gain (someone will be able to do the math on this). I also made some changes to my PSU so it’s hard to tell what’s what, but less is more in my book & no output caps..

Any comments?

Last edited by stijn001; 8th April 2014 at 03:11 PM.
  Reply With Quote

Reply


A NOS 192/24 DAC with the PCM1794 (and WaveIO USB input)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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
FS: Audio Widget (modified) Async USB DAC 24/192 ESS 9023 headphone friendly ASIO KS 2A3SET Swap Meet 5 15th August 2012 04:52 AM
Show my PCM1794 DAC TSOLINK + COAX + USB input, Line and headphone AMP output AWaudio Vendor's Bazaar 3 2nd January 2012 12:44 PM
GodDAC - 192/24 USB DAC BizonGod Digital Source 36 30th June 2011 03:16 PM
24 bit/192 kHz via USB? gentlevoice Everything Else 3 22nd December 2008 06:24 AM


New To Site? Need Help?

All times are GMT. The time now is 01:07 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio
Wiki