DIY Non-OS TDA1543 DAC - 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 4th August 2003, 04:07 AM   #1
BillyF is offline BillyF  Singapore
diyAudio Member
 
Join Date: Aug 2003
Location: Singapore
Default DIY Non-OS TDA1543 DAC

I need help form you guys out there who have done this project before. I finished my mini-DAC non-OS CS8412 and TDA1543 project. The sound is very revealing with very vivid vocals. At first, I was very impressed with the sound then I noticed that the highs rolls-off at certain frequency. I manage to get back the highs but buy putting a resonant ckt at the output. Now it's lacking the punch (bass) and the soundstage is narrow compared to normal CDP.
If anybody can suggest how to get a beeter bass and wider sounstage then this project can be called very succesful.
BTW, I used solen 2.2µF output caps and Hovland 0.1µF input caps. The I/V resistor was changed to 1.5K and Vref to 1K.
Need some inputs here.
A link onto my homepage of my DIY project.
DIY Mini-DAC TDA1543
Any advise/recommendation is highly appreciated.
Thanks,
Billy
  Reply With Quote
Old 4th August 2003, 08:27 AM   #2
halojoy is offline halojoy  Sweden
On Hiatus
 
Join Date: Nov 2002
Smile Non-OS DAC

Quote:
Originally posted by BillyF
I finished my mini-DAC non-OS CS8412 and TDA1543 project.
..... the highs rolls-off at certain frequency. I manage to get back the highs but buy putting a resonant ckt at the output. Now it's lacking the punch (bass) and the soundstage is narrow compared to normal CDP.
If anybody can suggest how to get a beeter bass and wider sounstage then this project can be called very succesful.
..... Need some inputs here.
My homepage, my DIY project: DIY Mini-DAC TDA1543
Billy
Pedja from Serbia has a project/article on NON-OS DAC
at his page.
He also knows a lot about Digital to Analog things and Gainclones.
He is also a specialist on Marantz CD-players, tweak and mods.
Like change the clock and all that.
You can find his stuff, links and more in this thread
he started:

Pedja's Gainclone Page with Non-OS page


He has full schematics and power supplies, theory, as well as test-curves,
and simulations at his pages.
Some good references, too. Thorsten etc...

Quote:
From Pedja's Long Article about non-oversampling:

"Merits and shortcomings of the particular filters mentioned above could be more clear looking at the simulations I made using Linear Technology’s SwitcherCAD. The name of this program is associated to one specialized for the simulations of the switching supplies, but it is (free) fully working general spice program. It offers that great opportunity to simulate circuits with wav files at the input. As wav file, naturally, doesn’t include sample and hold, observed waveforms for which FFTs are done are connect-the-dots derived. Speaking generally, this should be treated as an error. If you want to model the input better than I did, it is ok, but principally it will not change anything. (19 June 2003 update: One problem is that the original FFT graphs have wrong scaling in dB, so I deleted these values. FFT graphs without scaling on Y axis should be considered as 50dB tall.) Resistor 1k in all schematics is an I/V resistor which applies to TDA1543 and if it has some different value, the rest of the filter should be slightly remodeled.

Pedja Rogic, April 2003"

halojoy Technics SL-PS7 CD-Player
!!! 16 bit, but with 24 bit high speed up-resampling !!!
Digital Re-Master Processing can be switched ON/OFF, by a switch.

halojoy's AUDIO Portal - including full mirror of - Pedja Rogic Audio Pages
  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
Tda1543 fili Digital Source 6 7th July 2014 04:04 PM
Wtb: Tda1543 leadbelly Swap Meet 0 19th October 2006 05:42 AM
TDA1543 dac dariusku Digital Source 3 31st March 2006 06:38 PM
Where to buy TDA1543 D/A stan_33 Digital Source 32 7th May 2004 07:54 AM
TDA1543 Non OS DAC jean-paul Digital Source 83 22nd January 2004 10:27 PM


New To Site? Need Help?

All times are GMT. The time now is 08:51 AM.


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