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 26th February 2015, 10:16 PM   #4081
D3nsityD3nt is offline D3nsityD3nt  Italy
diyAudio Member
 
Join Date: Dec 2012
Location: Cotignola
A NOS 192/24 DAC with the PCM1794 (and WaveIO USB input)
Quote:
Originally Posted by dddac View Post
Audio creative cannot give the answer, as I have to design them first
I sent you mail, but your email server bounced three times as not deliverable .... so I gave up... Sorry...
Doede I sent you message with questions about Transformer Volume Control some time ago. And never received an answer. This message above makes me think that maybe the same bouncing happens with your e-mails to me? Or maybe you never received my message? I sent it from this forum PM system, and it was saying that my message was sent in form of an e-mail to you, not a PM. I don't know how much this PM to e-mail system is reliable.

Regards
  Reply With Quote
Old 26th February 2015, 10:25 PM   #4082
dddac is offline dddac  Germany
diyAudio Member
 
Join Date: Jul 2003
Location: Wiesbaden
I will dive into my spam. if i find it you will have your answer tomorow

In general... I cannot always answer immediately. I travel almost every week...
__________________
www.dddac.com
Happy listening and building
  Reply With Quote
Old 27th February 2015, 12:17 AM   #4083
D3nsityD3nt is offline D3nsityD3nt  Italy
diyAudio Member
 
Join Date: Dec 2012
Location: Cotignola
A NOS 192/24 DAC with the PCM1794 (and WaveIO USB input)
There is no hustle :-) I understand that. I would apreciate any advice, whenever is confortable for you.
Thank you in advance.
  Reply With Quote
Old 27th February 2015, 04:01 PM   #4084
Supersurfer is offline Supersurfer  Netherlands
diyAudio Member
 
Join Date: Feb 2013
Quote:
Originally Posted by carlsor View Post
The Salas power supply/voltage regulators have 4 rectifying diodes on each board. No place for a choke. The on board main supply cap and shunt current create a 3mohm output impedance up to 30Khz without the need for a big-@$$ transformer. I use a 56VA transformer with dual secondaries rated at 2 amps at 14VAC each. This is more than four times the .45 amps my Salas boards draw supplying 8V to the PCM1794 analog sections and +/-12V to the DAC output buffer.

I just want to let forum readers know that there is more than one power supply path to great sound. My DAC sounds far better than I ever imagined possible without using lots of iron. I will explain my Salas power supplies in greater detail with pictures on my Upgrade Thread if there is interest.
Hi,

There are a lot of ways to build a power supply, each design will have its flaws and strengths.

The first big modification I tried on the dac was changing the Doede power supplies for Salas supplies. These are indeed nice sounding supplies but IMHO unregulated choke supplied is even better, significantly better.
And it saves you a lot of time figuring out how to dimension the salas boards...........
  Reply With Quote
Old 27th February 2015, 04:22 PM   #4085
Supersurfer is offline Supersurfer  Netherlands
diyAudio Member
 
Join Date: Feb 2013
Hi All,

There is some exciting stuff about to happen tomorrow!
We will have a DDDAC meet together with: Stijn, James, Cees, Doede and me, at my house.

This will be the line up:

We will have the following dacs to compare:
1) 2 deck 1794 dddac with oscon/silmic and unregulated power supply (Stefan)
2) 4 deck tweaked out 1794 dac with all options (Stefan)
3) 1 deck tweaked out 1794 dac with all options (James)
4) 4 deck tweaked out 1794 dac with all options (Stijn)
5) * deck 1794 dac Hogeberg with shunts and pin 20 CCS (Doede)
6) 8 deck stock version 1794 dac with Sowters (Doede)
7) 1 deck stock version 1794 dac (Doede)
8) 1 deck with tent shunt 1794 dad (Doede)
9) DSD prototype dac (Doede)

As a source we have:
1) two raspberry pi’s with Squeezelite or volumio and one Acko Reclocker (Stefan)
2) BBB with squeezelite or volumio (Stefan)
3) BBB with squeezelite or volumio and Acko reclocker (Stijn)
4) BBB with squeezlite and Acko reclocker (James)

All connected with I2S to the dac, some synchronous some asynchronous.

We will compare several stuff:
1) the different DAC builds of course
2) squeezelite versus MPD based player (volumio, Miero botic drive)
3) synchronous versus asynchronous clocking of the streamer on the Acko S03 boards (BBB versus RPI)

I can't wait!

See all you guys tomorrow!

Regards,

Last edited by Supersurfer; 27th February 2015 at 04:27 PM.
  Reply With Quote
Old 27th February 2015, 04:32 PM   #4086
D3nsityD3nt is offline D3nsityD3nt  Italy
diyAudio Member
 
Join Date: Dec 2012
Location: Cotignola
A NOS 192/24 DAC with the PCM1794 (and WaveIO USB input)
With this event you guys should make some online streaming! :-) Seriously!
  Reply With Quote
Old 27th February 2015, 04:35 PM   #4087
Sovereign1 is offline Sovereign1  United Kingdom
diyAudio Member
 
Join Date: Dec 2013
Location: Maidstone
Sounds fantastic, but exhausting
  Reply With Quote
Old 27th February 2015, 04:35 PM   #4088
pz1 is offline pz1  Netherlands
diyAudio Member
 
Join Date: Oct 2013
Quote:
Originally Posted by Supersurfer View Post
Hi All,

There is some exciting stuff about to happen tomorrow!
We will have a DDDAC meet together with: Stijn, James, Cees, Doede and me, at my house.

This will be the line up:

We will have the following dacs to compare:
1) 2 deck 1794 dddac with oscon/silmic and unregulated power supply (Stefan)
2) 4 deck tweaked out 1794 dac with all options (Stefan)
3) 1 deck tweaked out 1794 dac with all options (James)
4) 4 deck tweaked out 1794 dac with all options (Stijn)
5) * deck 1794 dac Hogeberg with shunts and pin 20 CCS (Doede)
6) 8 deck stock version 1794 dac with Sowters (Doede)
7) 1 deck stock version 1794 dac (Doede)
8) 1 deck with tent shunt 1794 dad (Doede)
9) DSD prototype dac (Doede)

As a source we have:
1) two raspberry piís with Squeezelite or volumio and one Acko Reclocker (Stefan)
2) BBB with squeezelite or volumio (Stefan)
3) BBB with squeezelite or volumio and Acko reclocker (Stijn)
4) BBB with squeezlite and Acko reclocker (James)

All connected with I2S to the dac, some synchronous some asynchronous.

We will compare several stuff:
1) the different DAC builds of course
2) squeezelite versus MPD based player (volumio, Miero botic drive)
3) synchronous versus asynchronous clocking of the streamer on the Acko S03 boards (BBB versus RPI)

I can't wait!

See all you guys tomorrow!

Regards,
Hi Sfefan,

That will be exciting, have a lot of fun! Very curious about the outcomes.

Paul
  Reply With Quote
Old 27th February 2015, 04:36 PM   #4089
dddac is offline dddac  Germany
diyAudio Member
 
Join Date: Jul 2003
Location: Wiesbaden
Not to forget, my notebook, windows 8.1 with Jriver 20 and SSD
It is not ALL BBB
__________________
www.dddac.com
Happy listening and building
  Reply With Quote
Old 27th February 2015, 04:45 PM   #4090
SimonJ is offline SimonJ  United Kingdom
diyAudio Member
 
Join Date: Mar 2013
Location: Southampton
WOW what a bake off guys! Looking forward to the results.

I am about to build my third DDDAC
  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 05:52 AM
Show my PCM1794 DAC TSOLINK + COAX + USB input, Line and headphone AMP output AWaudio Vendor's Bazaar 3 2nd January 2012 01:44 PM
GodDAC - 192/24 USB DAC BizonGod Digital Source 36 30th June 2011 04:16 PM
24 bit/192 kHz via USB? gentlevoice Everything Else 3 22nd December 2008 07:24 AM


New To Site? Need Help?

All times are GMT. The time now is 11:07 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio
Wiki