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 3rd November 2018, 04:03 AM   #6691
bohun is offline bohun
diyAudio Member
 
Join Date: Aug 2010
Default New build - no sound

I just built my first deck (7 more to go) and mainboard. Unfortunately, there is no sound whatsoever. Any troubleshooting tips would be appreciated,
  Reply With Quote
Old 3rd November 2018, 04:09 AM   #6692
bohun is offline bohun
diyAudio Member
 
Join Date: Aug 2010
I Just build first dac board and Mainboard. Unfortunately there is no sound whatsoever.
I checked voltage in 12V, trimmer adjusted to 40mv.
Any troubleshooting tips would be appreciated.
  Reply With Quote
Old 3rd November 2018, 09:57 AM   #6693
dddac is offline dddac  Germany
diyAudio Member
 
Join Date: Jul 2003
Location: Wiesbaden
First to check
Did you connect the switch spdif / I2s ?
What DC value do you measure on POS and NEG versus COMMON ?

If all ok, than see if your source is really outputting I2S signals ?
__________________
www.dddac.com
Happy listening and building
  Reply With Quote
Old 3rd November 2018, 03:41 PM   #6694
bohun is offline bohun
diyAudio Member
 
Join Date: Aug 2010
Thank you for responses: once I connected switch I was able to play music
I have tried SPDIF with Digi One Pro as well as RPI + Isoltaor and Kali. Sounds really good with 45/2A3 setup. Let the experiments Begin.
  Reply With Quote
Old 4th November 2018, 03:08 AM   #6695
mbrennwa is offline mbrennwa  Switzerland
diyAudio Member
 
mbrennwa's Avatar
 
Join Date: Mar 2005
Location: Zurich, Switzerland
Seems like you have a great journey ahead. Enjoy!
__________________
Support the Monkey Coffin!
  Reply With Quote
Old 9th November 2018, 07:11 PM   #6696
steefdebruijn is online now steefdebruijn  Netherlands
diyAudio Member
 
Join Date: Oct 2016
About output options, would this active I/V be a good idea for this DAC? I assume to remove output resistors and capacitor on mainboard.

Can use both rca and balanced out on this if I read correctly

The Legato Discrete Balanced I/V Stage
  Reply With Quote
Old 10th November 2018, 06:52 AM   #6697
dddac is offline dddac  Germany
diyAudio Member
 
Join Date: Jul 2003
Location: Wiesbaden
Quote:
Originally Posted by steefdebruijn View Post
About output options, would this active I/V be a good idea for this DAC? I assume to remove output resistors and capacitor on mainboard.

Can use both rca and balanced out on this if I read correctly

The Legato Discrete Balanced I/V Stage
I would say no, it defeats the concept of the passive I/V, which is totally linear and has no disadvantage over a complex piece of electronics doing basically the same

what do want to gain here ?
__________________
www.dddac.com
Happy listening and building
  Reply With Quote
Old 10th November 2018, 07:02 AM   #6698
abraxalito is online now abraxalito  United Kingdom
diyAudio Member
 
abraxalito's Avatar
 
Join Date: Sep 2007
Location: Hangzhou - Marco Polo's 'most beautiful city'. 700yrs is a long time though...
Send a message via Yahoo to abraxalito
Since you're asking let's see - its not just about the linearity of the I/V stage its also about that of the DAC. Best linearity of DACs in general is obtained when the output voltage is held constant. Could be that the PCM1794 is an exception to the rule though.
__________________
I know you think you understand what you thought I said but I'm not sure you realize that what you heard is not what I meant - Alan Greenspan
  Reply With Quote
Old 10th November 2018, 07:48 AM   #6699
batteryman is offline batteryman  United Kingdom
diyAudio Member
 
Join Date: Jun 2011
Location: SCOTLAND
I like the sound of my Sowter I/V transformers and am just turned off by the thought of more active devices between dac chip and amp. I'm also not taken in by the latest "state of the art" opamps as high spec does not guarantee the best sound. They are the product of rivalry between the semiconductor manufacturers imho.
  Reply With Quote
Old 10th November 2018, 10:10 AM   #6700
MagicBus is offline MagicBus  Greece
diyAudio Member
 
MagicBus's Avatar
 
Join Date: Aug 2016
Location: Athens, Greece
Quote:
Originally Posted by abraxalito View Post
Since you're asking let's see - its not just about the linearity of the I/V stage its also about that of the DAC. Best linearity of DACs in general is obtained when the output voltage is held constant. Could be that the PCM1794 is an exception to the rule though.

Does anybody know what is the input impedance of this I/V stage?
  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 05:47 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki