and hardly available at the time being15µF only MSB pins
Elso,
nono- meant something else
15µF only on the MSB bit pins, the rest is content with 100nF
It is always hard to judge what sounds better and what not.
A friend of mine does have a decent setup, but certain tweaks don´t work in his that do so in mine...
To conclude, if something sounds better or not also depends on the setup; if my system does not sound distinctly better with it, other systems may
reveal it clearly, and suggest it is worthwhile
I´ll have to check it,too...
Guess what, this friend of mine doesn´t give a damn about most of my tweaks, and his system still is good
If this only would be the case with mine 🙁
🙂 Philipp
Elso,
nono- meant something else
15µF only on the MSB bit pins, the rest is content with 100nF
It is always hard to judge what sounds better and what not.
A friend of mine does have a decent setup, but certain tweaks don´t work in his that do so in mine...
To conclude, if something sounds better or not also depends on the setup; if my system does not sound distinctly better with it, other systems may
reveal it clearly, and suggest it is worthwhile
I´ll have to check it,too...
Guess what, this friend of mine doesn´t give a damn about most of my tweaks, and his system still is good
If this only would be the case with mine 🙁
🙂 Philipp
Re: 15µF only MSB pins
My sytem is extremely revealing or should I say unforgiving. Klipschorns.
Of course I meant the caps at the MSB pins but the designation to what are the MSB's was one of the mistakes Thorsten made and I corrected. Also he switched two signals and the setting of the output format of the CS8412 on his website. I corrected all these "slight" errors and did not even get a thank you. You see Jocko, T. is not my friend. <B><I>Ingratitude is worlds reward </B></I>they say in Dutch.
I totallly agree that the audibility of tweaks depends on the system. A expensive moving coil cartridge will not make any difference on a cheap $ 500 system.....
Given the fact that my speakers are so revealing I am happy I finally found the Holy Grail in such a simple chip as the TDA1543, yes you read right NOT the TDA1541. Right now Cesaria Evora [Cabo Verde] is singing, not screaming, <B>right IN</B> my room and I like it! She lets me forget I am ripped by a junk today, guess what should I do with 3/4 of a 20 Euro banknote....?
Hi Philipp, You raise interesting points but admittingly I only answered because I was intrigued by the "wet string" thingyinfinite baffle said:
My sytem is extremely revealing or should I say unforgiving.
Klipschorns.Of course I meant the caps at the MSB pins but the designation to what are the MSB's was one of the mistakes Thorsten made and I corrected. Also he switched two signals and the setting of the output format of the CS8412 on his website. I corrected all these "slight" errors and did not even get a thank you. You see Jocko, T. is not my friend. <B><I>Ingratitude is worlds reward </B></I>they say in Dutch.
I totallly agree that the audibility of tweaks depends on the system. A expensive moving coil cartridge will not make any difference on a cheap $ 500 system.....
Given the fact that my speakers are so revealing I am happy I finally found the Holy Grail in such a simple chip as the TDA1543, yes you read right NOT the TDA1541. Right now Cesaria Evora [Cabo Verde] is singing, not screaming, <B>right IN</B> my room and I like it! She lets me forget I am ripped by a junk today, guess what should I do with 3/4 of a 20 Euro banknote....?
Attachments
Hi Elso,
can´t your bank swap that bank note?
Btw Thorsten didn´t get much for all the help he supplied so far (from me!)
Let´s see..
Philipp
can´t your bank swap that bank note?
Btw Thorsten didn´t get much for all the help he supplied so far (from me!)
Let´s see..
Philipp
BTW, I just posted a pic of a cheap OS DAC I made with an "ultramodern"chip in:
http://www.diyaudio.com/forums/showthread.php?s=&threadid=8198&perpage=15&pagenumber=2
http://www.diyaudio.com/forums/showthread.php?s=&threadid=8198&perpage=15&pagenumber=2
hifiwolf,
I have been in the same boat as you are now(actually I still am because I haven’t started to build one yet) trying to decide how to build a good DAC to myself. Maybe the plan I worked out for myself can help you also to start. Having so much choices: OS, No OS, new and old chips by different manufacturers, tube, opamp, BJT,FET, transformator coupled outputs, I2S or SP/DIFF receiver, regulated or battery power supplies, transports, etc. followed with contradictory opinions leaves you wonder which way to go without regretting afterwards. I decided to split that project into separate, somewhat unified parts. It means power supply, receiver, DAC, filter and output are all in separate predetermined size boards and easily connectable with each other so I can switch them in and out.
I planned to start from the simplest and cheapest first:
- NO OS, single TDA1541 with miniature 220n polyester coupling caps,
- CS8412 receiver, simple RCA input
- resistor I/V conversion,
- LM317/337 lightly filtered supply,
- existing Philips transport.
Next:
- Put another TDA on top of existing one for paralleling, more exotic coupling caps
- transformer coupled receiver input
- tube output
- adding more filtering to the power supply.
Then:
- I2S straight to the DAC which requires
- CDPro transport
- PCM1702 DAC
- maybe transformer output
Then:
- OS filter
Then
- You can go on and on with this list building and changing different parts while monitoring perceived changes in the sound. At the end you should have had fun time building (why you DIY anyway), lots of first hand expertise, good leftover parts or boards for other projects or to share with fellow DIYrs still starting that same route.
Argo
I have been in the same boat as you are now(actually I still am because I haven’t started to build one yet) trying to decide how to build a good DAC to myself. Maybe the plan I worked out for myself can help you also to start. Having so much choices: OS, No OS, new and old chips by different manufacturers, tube, opamp, BJT,FET, transformator coupled outputs, I2S or SP/DIFF receiver, regulated or battery power supplies, transports, etc. followed with contradictory opinions leaves you wonder which way to go without regretting afterwards. I decided to split that project into separate, somewhat unified parts. It means power supply, receiver, DAC, filter and output are all in separate predetermined size boards and easily connectable with each other so I can switch them in and out.
I planned to start from the simplest and cheapest first:
- NO OS, single TDA1541 with miniature 220n polyester coupling caps,
- CS8412 receiver, simple RCA input
- resistor I/V conversion,
- LM317/337 lightly filtered supply,
- existing Philips transport.
Next:
- Put another TDA on top of existing one for paralleling, more exotic coupling caps
- transformer coupled receiver input
- tube output
- adding more filtering to the power supply.
Then:
- I2S straight to the DAC which requires
- CDPro transport
- PCM1702 DAC
- maybe transformer output
Then:
- OS filter
Then
- You can go on and on with this list building and changing different parts while monitoring perceived changes in the sound. At the end you should have had fun time building (why you DIY anyway), lots of first hand expertise, good leftover parts or boards for other projects or to share with fellow DIYrs still starting that same route.
Argo
Thanks for all DIY pioneers for purposes.
One question more:
is NON OS DAC better with parallel chips or one is good enough.
We talk of cource about TDA1541 silver crown.
hifiwolf
One question more:
is NON OS DAC better with parallel chips or one is good enough.
We talk of cource about TDA1541 silver crown.
hifiwolf
I started off with 1 TDA1541 S1, then added another one and it made quite a big difference more detail all over.
Each dac has it's own decoupling caps and LM317/LM337 regulators.
My goal is 4 in parallel.
Splitting up supplies to separate transformers also gives a nice improvement.
Currently I'm using 4 transformers and my goal is 7
2 for the CS8412 (2 X +5v)
2 for the TDA1541 (+5v, -5v and -15v)
1 for the Kwak reclocker (+5v)
2 for the output stage and I/V converter (+15, -15)
Each dac has it's own decoupling caps and LM317/LM337 regulators.
My goal is 4 in parallel.
Splitting up supplies to separate transformers also gives a nice improvement.
Currently I'm using 4 transformers and my goal is 7
2 for the CS8412 (2 X +5v)
2 for the TDA1541 (+5v, -5v and -15v)
1 for the Kwak reclocker (+5v)
2 for the output stage and I/V converter (+15, -15)
Hi,
Posted a circuit once to split I2S in left and right and feed one TDA1541 (or something else) with left channel on both DAC channels and the other with two times right channel.
Also the feed to the DACS could be made differential.
The prototype worked (GAL and some logic). I hoped that somebody was going to try it, before i put effort in creating a board for this. Since nobody did, i have to find out for myself if it is usefull. Nearly finished with the pcb design. If it is working, i'll post here..
Greetings,
Guido B.
Posted a circuit once to split I2S in left and right and feed one TDA1541 (or something else) with left channel on both DAC channels and the other with two times right channel.
Also the feed to the DACS could be made differential.
The prototype worked (GAL and some logic). I hoped that somebody was going to try it, before i put effort in creating a board for this. Since nobody did, i have to find out for myself if it is usefull. Nearly finished with the pcb design. If it is working, i'll post here..
Greetings,
Guido B.
jean-paul said:
Couldn't find anywhere to get a small quantity. Where did you get yours?
Cheers,
Yes, nice. I saw that the other day. Looked at the availability of chips.
Couldn't find anywhere to get a small quantity. Where did you get yours?
Cheers,
I started off with 1 TDA1541 S1, then added another one and it made quite a big diffe
Hello,
what shema do you use for 2 parallel TDA1541 ?
Flemming J P said:I started off with 1 TDA1541 S1, then added another one and it made quite a big difference more detail all over.
Each dac has it's own decoupling caps and LM317/LM337 regulators.
My goal is 4 in parallel.
Splitting up supplies to separate transformers also gives a nice improvement.
Currently I'm using 4 transformers and my goal is 7
2 for the CS8412 (2 X +5v)
2 for the TDA1541 (+5v, -5v and -15v)
1 for the Kwak reclocker (+5v)
2 for the output stage and I/V converter (+15, -15)
Hello,
what shema do you use for 2 parallel TDA1541 ?
Hello John,
I know someone at Philips that sent me a few after my complaint that the chips are virtually unfindable. Otherwise I wouldn never have found them. Minimum order quantity is 480 pieces at the distributor !! These components are meant for industry only.
Jean-Paul
I know someone at Philips that sent me a few after my complaint that the chips are virtually unfindable. Otherwise I wouldn never have found them. Minimum order quantity is 480 pieces at the distributor !! These components are meant for industry only.
Jean-Paul
Thanks Jean-Paul, I thought that might be the case.
Obviously if I find otherwise, I'll post the details.
So far I found minimum of 80 or so... but I don't think there would be enough interest for a group purchase.
Cheers,
Obviously if I find otherwise, I'll post the details.
So far I found minimum of 80 or so... but I don't think there would be enough interest for a group purchase.
Cheers,
So far I found minimum of 80 or so
And I bet you could sell that many on the web as the Non OS projects are getting very popular........
And I bet you could sell that many on the web as the Non OS projects are getting very popular........
It is OS. If you want a chip and board I can send you one of each if you have something to trade.
oops, wrong category.
oops, wrong category.
Hi Jean-Paul,
Thanks for the offer, but I really wanted a continued supply.
Also, you probably wouldn't have wanted a load of VALVES,🙄
Cheers,
Thanks for the offer, but I really wanted a continued supply.
Also, you probably wouldn't have wanted a load of VALVES,🙄
Cheers,
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