Building the ultimate NOS DAC using TDA1541A - Page 495 - diyAudio
Go Back   Home > Forums > Source & Line > Digital Line Level

Digital Line Level DACs, Digital Crossovers, Equalizers, 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 15th September 2013, 02:53 PM   #4941
diyAudio Member
 
maxlorenz's Avatar
 
Join Date: Oct 2003
Location: osorno , Chile
I use proper copper rods on my dedicated circuits (though one has cable TV and web connection) and balanced power transformer, which is not exactly isolation transformer.
I like balanced power

Cheers,
M.
  Reply With Quote
Old 15th September 2013, 05:53 PM   #4942
diyAudio Member
 
Join Date: Sep 2009
Location: seoul
hi ecdesigns,

could you tell me how i would be able to float pin 7 of 1543 if i was using active i/v stage such as zen or ad844?

and is there any other trick that can be performed for the pair of 1543 in balanced config with flipflopped data?

thank you.

i've been toying with 1543 since the beginning of this year and your pin float mod still stands as the most dramatic improvement to the chip, yet. i also was regarding your i2s signal attenuation circuit with diode strings but found out that it was reducing the gain in a balanced config where the data signal is fed through 74hc04 hex inverter.

when i disconnect the diode string the gain would go up.
  Reply With Quote
Old 15th September 2013, 11:03 PM   #4943
jstang is offline jstang  United States
diyAudio Member
 
Join Date: Jun 2008
Could you drive a copper rod into your soil ? Mine would look like a pretzel....I need the copper clad steel.

These grounds improved the TV cable reception....



Quote:
Originally Posted by maxlorenz View Post
I use proper copper rods on my dedicated circuits (though one has cable TV and web connection) and balanced power transformer, which is not exactly isolation transformer.
I like balanced power

Cheers,
M.
  Reply With Quote
Old 16th September 2013, 10:49 AM   #4944
diyAudio Member
 
Bernhard's Avatar
 
Join Date: Apr 2002
Location: Munich
Quote:
Originally Posted by maxlorenz View Post
And the winner DAC chip is...???
Let me make a guess: PCM56
  Reply With Quote
Old 16th September 2013, 01:43 PM   #4945
diyAudio Member
 
triode_al's Avatar
 
Join Date: May 2004
Location: Westland
Blog Entries: 1
Quote:
Originally Posted by Bernhard View Post
Let me make a guess: PCM56
It can't be connected to I2S, can it?
__________________
DAC TDA1541 S1; Kondo post-I/V filter; MC30-Super --> two stage RIAA; Pre: SP-6 clone ; F5 ; 300B PP ; ESL 57
  Reply With Quote
Old 16th September 2013, 08:37 PM   #4946
diyAudio Member
 
Bernhard's Avatar
 
Join Date: Apr 2002
Location: Munich
Quote:
Originally Posted by triode_al View Post
It can't be connected to I2S, can it?
Use I2S for what ?
  Reply With Quote
Old 17th September 2013, 06:36 AM   #4947
SSerg is offline SSerg  Russian Federation
diyAudio Member
 
Join Date: Mar 2012
Location: St.Petersburg
Hi, Shinja

Quote:
Originally Posted by Shinja View Post
This tweak may make worse chip to be better performance, or typical chip to catch S2 spec, I expect.
Interestingly, you yourself have used this method? Can you tell me what are the results?

Quote:
Originally Posted by Shinja View Post
This tweak is unsuitable for passive IV circuit.
This is not entirely true. You can create a constant bias voltage across the I/U resistor.
  Reply With Quote
Old 24th September 2013, 03:56 AM   #4948
diyAudio Member
 
Join Date: Jan 2004
Location: Brazil
Quote:
Originally Posted by maxlorenz View Post
I use proper copper rods on my dedicated circuits (though one has cable TV and web connection) and balanced power transformer, which is not exactly isolation transformer.
I like balanced power

Cheers,
M.
Hi,

Whats the difference between that and a iso transformer?

I use a EMI common mode mains filter for my dac and it definitely makes a difference for the better. Itīs a delta electronics, sealed can, I took it from a no-break.
  Reply With Quote
Old 24th September 2013, 04:00 AM   #4949
diyAudio Member
 
Join Date: Jan 2004
Location: Brazil
I have been browsing this thread, looking for ideas to improve my dac, and something struck me here: the dedication and diligence of John and how much he has given here.

John: Your work is much appreciated! This thread is invaluable for any serious diyer.



Best regards,
Alex

Last edited by Alexandre; 24th September 2013 at 04:08 AM.
  Reply With Quote
Old 24th September 2013, 11:22 AM   #4950
diyAudio Member
 
maxlorenz's Avatar
 
Join Date: Oct 2003
Location: osorno , Chile
Quote:
Originally Posted by Alexandre View Post
Hi,

Whats the difference between that and a iso transformer?

I use a EMI common mode mains filter for my dac and it definitely makes a difference for the better. Itīs a delta electronics, sealed can, I took it from a no-break.
Hi. These guys explain it better than I could:

Index of Technical Articles About Balanced Power

Quote:
John: Your work is much appreciated! This thread is invaluable for any serious diyer.
Yes, his approach is like analysing with a magnifying lens every step of the chain and he has shown that every single part of his low parts count DACs matters to audio...

Cheers,
M.
  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



New To Site? Need Help?

All times are GMT. The time now is 11:44 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright Đ1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2