help with diff. output - 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 5th September 2003, 08:19 PM   #1
Raj1 is offline Raj1  United Kingdom
diyAudio Member
 
Join Date: Jan 2003
Location: UK
Default help with diff. output

HI,

If building this circuit for a differential output dac, is there any danger if the correct orientation is not known for the inv and non iv outputs from the dac to the tubes on schematic?

What is the danger?

http://www.ultranalog.com/cdenhancer...ancer2_3a5.pdf

Thanks
Raja
  Reply With Quote
Old 6th September 2003, 02:23 AM   #2
diyAudio Member
 
Join Date: May 2003
Location: Colorado
Hello -

If you choose the wrong outputs it will invert the absolute polarity of the audio signal. There is no danger, but the sound quality will be slightly degraded.

However, there is a danger if you use current-output DACs with this circuit. It will not work. This circuit is only for voltage-output DACs.

Good luck,
Charles Hansen
  Reply With Quote
Old 6th September 2003, 04:54 PM   #3
diyAudio Member
 
Join Date: Dec 2001
Location: Eindhoven
Quote:
Originally posted by Charles Hansen
Hello -

If you choose the wrong outputs it will invert the absolute polarity of the audio signal. There is no danger, but the sound quality will be slightly degraded.

However, there is a danger if you use current-output DACs with this circuit. It will not work. This circuit is only for voltage-output DACs.

Good luck,
Charles Hansen

Charles

some discs will suffer, others will improve

there is no such thing as "absolute correct polarity". I have recordings where even different mics have different polarity - horror.........

regards
__________________
Guido Tent
www.Tentlabs.com
  Reply With Quote
Old 6th September 2003, 06:30 PM   #4
diyAudio Member
 
Join Date: Mar 2003
Location: Mountain View, CA
It has been shown in carefully conducted ABX tests that inverting the polarity of an audio signal will simply not be audible. You have nothing to worry about in this respect.
__________________
Wingfeather
  Reply With Quote
Old 9th September 2003, 05:03 PM   #5
diyAudio Member
 
Join Date: Dec 2001
Location: Eindhoven
Quote:
Originally posted by Wingfeather
It has been shown in carefully conducted ABX tests that inverting the polarity of an audio signal will simply not be audible. You have nothing to worry about in this respect.

my own ABX tests show >80% score, depending on te material

what reference do you have to these tests ?

Guido
__________________
Guido Tent
www.Tentlabs.com
  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
diff between dipole and IB bser Multi-Way 6 18th November 2004 09:23 PM
Output stage/preamp with gain: X-Bosoz with diff.-pair? Onvinyl Pass Labs 1 19th July 2004 08:29 AM
Diff amp driver -> SE output Saurav Tubes / Valves 13 8th January 2004 04:42 AM


New To Site? Need Help?

All times are GMT. The time now is 09:48 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