DAC without oversampling

Peter Daniel · 26th February 2002, 08:45 PM

I got interested in building a DAC without oversampling. Here is a link:
http://www.homestead.com/whaan/files/index.html
Did anybody tried that type of design? Any opinions and suggestions welcome.

rfbrw · 27th February 2002, 03:18 AM

I have one of these 1x dacs (8412/1702) and I am not absolutely certain that its behaviour is not programme dependent.
It seems to prefer Lemon Jelly, Akasha and Peter Gabriel to anything else. Then again it is still only a prototype with crude resistor i/v stage.
But as these things are relatively easy to build especially the TDA1541/3 based ones and those who use them, both diy and commercial, rave about them I say put one together and see for yourself.
ray.

PhilW · 27th February 2002, 10:20 AM

You should have a try.

Here in UK we can also obtain tda 1541 which is also cheap (Cricklewood Electronics), and appears to have better performance figures than the tda1543.

I have built this on Veroboard (matrix board with copper strips), and minimal wires between each small board. It does work, but I have taken it to pieces again because I am getting distortion in quiet passages. This may be because my construction method is too basic.

tvi · 27th February 2002, 02:19 PM

You may be interested in the<a href="http://www.tnt-audio.com/clinica/convertusdecima_e.html">Convertus Decima</a> article at TNT audio.

Regards
James

26th February 2002, 08:45 PM	#1
Peter Daniel diyAudio Member Join Date: Jul 2002 Location: Toronto, Canada	DAC without oversampling I got interested in building a DAC without oversampling. Here is a link: http://www.homestead.com/whaan/files/index.html Did anybody tried that type of design? Any opinions and suggestions welcome.

27th February 2002, 10:20 AM	#3
PhilW diyAudio Member Join Date: Feb 2002 Location: u.k. south coast	x1 oversampling dac You should have a try. Here in UK we can also obtain tda 1541 which is also cheap (Cricklewood Electronics), and appears to have better performance figures than the tda1543. I have built this on Veroboard (matrix board with copper strips), and minimal wires between each small board. It does work, but I have taken it to pieces again because I am getting distortion in quiet passages. This may be because my construction method is too basic.

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27th February 2002, 03:18 AM	#2
rfbrw diyAudio Member Join Date: Oct 2001 Location: .	I have one of these 1x dacs (8412/1702) and I am not absolutely certain that its behaviour is not programme dependent. It seems to prefer Lemon Jelly, Akasha and Peter Gabriel to anything else. Then again it is still only a prototype with crude resistor i/v stage. But as these things are relatively easy to build especially the TDA1541/3 based ones and those who use them, both diy and commercial, rave about them I say put one together and see for yourself. ray.

27th February 2002, 02:19 PM	#4
tvi diyAudio Member Join Date: Apr 2001 Location: Moonee Ponds, Vic, Australia	You may be interested in the<a href="http://www.tnt-audio.com/clinica/convertusdecima_e.html">Convertus Decima</a> article at TNT audio. Regards James