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non-profit ver.3 TDA1541a DAC for limited budget diyers

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hi all,

I was back from china, PCB gerber file will start to print the FR4 2.0mm thickness PCB tomorrow. need 10days arrived my hand. I will call my production line to start up the remain procedure immediately.


stefanobilliani--Assembled V.3 151a DAC extra chip adapter PCB.
14 matched MKP caps. CD controler kit.EMS. Extra one pc TDA1541A.

Eddy Andra Anwar,-DAC v3 kit wth CS8414,Extra 8412-IS chips (with adapter & gold pins).Extra tda1541a(matched ate code only!!)EMS.14 pcs close match MKP 0.1uf caps. ( BTW, What is your code in diyaudio.com? pls let me know.

Woon Seong Pang- CD rom kit money arrived. so..... now your order were, pls check,,,,,DAC v3 kit full assembled
CS8414 & 8412-IS chips (with adapter & gold pins)EMS
(new) CD Controller Kit .

pls check any mistake or not, I not like to make any diyers unhappy.


thx


thomas
 
Hi all,

photos show was the ultimate ver.3 TDA1541a w/USB2.0 receiver.
ultra power supply with 9 section too. Very low noise, I use headphone & earphone to test already.

This is funish look, but all the parts was cheap one, when mass production will much better.

TDA1541a Ver.3 W/ USB 2.0 receiver in sony's imagestation

http://www.imagestation.com/album/pictures.html?id=2105567327


thx

thomas
 
Hi all order diyers,

Before I post the dac, I will groups totally how many DIyers lov 627, how many diyers love 797.

don't worry for this.

U wll get this happy.

Pls all prepare one 16~0~16V 35Va power trans on hand, don't use round core, not good.
RS had some isolated small power transformer 110V X2 parallel two side
110~0 110~0

16~0 16~0

two winding was sperate two bobbin to isolated the noise.
I had try to ask for factory to produce. price is good for one USD 10.5 per one 40VA, but worse was the postage. so I forget this.
also use copper foil to double shielding is reeally good.


The sample I test was quite good. I use headphone & still hadn't heard any noise.

thx

thomas
 
tube-lover said:
Hi all order diyers,

Before I post the dac, I will groups totally how many DIyers lov 627, how many diyers love 797.

don't worry for this.

U wll get this happy.

Pls all prepare one 16~0~16V 35Va power trans on hand, don't use round core, not good.
RS had some isolated small power transformer 110V X2 parallel two side
110~0 110~0

16~0 16~0

two winding was sperate two bobbin to isolated the noise.
I had try to ask for factory to produce. price is good for one USD 10.5 per one 40VA, but worse was the postage. so I forget this.
also use copper foil to double shielding is reeally good.


The sample I test was quite good. I use headphone & still hadn't heard any noise.

thx

thomas

That would be not easy 16V isn't a standart value here for secondary winding of R-core trafo. We have 0-15V than 0-18V for next step.....The only solution I see is to go for an extra trafo in a factory, and than it will be à EI trafo. Ring will not be suit has i read it.

Marc
 
hi marc,

That would be not easy 16V isn't a standart value here for secondary winding of R-core trafo. We have 0-15V than 0-18V for next step.....The only solution I see is to go for an extra trafo in a factory, and than it will be ?EI trafo. Ring will not be suit has i read it.

U can try 15~0~15 first,thats enough. I was worry the input voltage of your home is really arrived the really voltage, such as 0~220, actuall is 0~207~210. so I choose 16~0~16 will better.

So not worry for this & ty the power trans in your hand first.

hi dw8083,

Are there balanced outputs in v3 or plans for balanced out in the future?

pls visit this line to take a full look of the ultimate ver.3, include USB receiver, the Balance input was seperate another pulse input trans exclude the other input such as rca & BNC, its a really balance input, not SE.

http://www.imagestation.com/album/pictures.html?id=2105567327

this is a full assemble kit.

Balance output looks must use transformer output or really parallel DAC with 4 IV will have real balance output stage.

thx

thomas
 
Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.