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Ultimate Twin TDA1541a Non-oversampling DAC with tube buffer & reclock set.......

>Ultlimate Ver.2 Twins TDA1541a Non-oversampling DAC Funish products.................

Hi,

sorry for some diyers cannot see the full picture from yahoo .com

this is more picture for the mulit-adapter.

thx

thomas
 

Attachments

  • 74hc4040, 74hc74 re-clock, cs8414 to 8412 converter,single to dual op-amp converter pcb.jpg
    74hc4040, 74hc74 re-clock, cs8414 to 8412 converter,single to dual op-amp converter pcb.jpg
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Link for Ultimate ver.2 Twins TDA1541 DAC pre-assembled kits.........

Hi all,

sorry for some of the diyers that cannot visit my yahoo photo book in USA or another country due to the chinese lanuage is not supported.

I open another account in.

http://www.imagestation.com

Use this link.

http://www.imagestation.com/member/signin.html?ru=&rf=

Login ID.

1541dac_ver2


Password

888888

Three file will contain total over 50 pieces of pictires.

The chassis will upload tomorrow.

thx

thomas
 
Ultlimate Ver.2 Twins TDA1541a Non-oversampling DAC Funish products..................

Hi All,

I received the funish TDA1541a kits already.

although factory test already, I still need to spend 12 hours to running for them( everyone ) for the stability or not.

Kits supply to Market will 2005-04-22. (Friday)

This is every kits contain.

PCB
-----
4( Four ) pieces of Plasma Spark shine Blue colour PCB.
Two will all factory funish & two will Blank.

1. Twin TDA1541a PCB fully funish & test already.
Parts- Diode was Vishay -telefunken BYV-27-150
(Ultra-fast soft receovery diodes)

REGULATOR ICs LT1033 & 1057.

TDA1541a Decoupling caps was ERO MKP1813.
Extra 28 pcs 1541a decoupling caps Philips Holland MKT will follow with kit ( use in the Marantz CD94 types) & 28 pcs of the Wima MKP10 will follow with kits for diyer to exchange for their taste.

All 'E' caps was Sanyo OS-CON,Elna, Nichicon Fine, Gold , Muse,Purism Non-polar caps.

All the small watts resistors was KOA Low ppm resistors.
Large watts was NOS Western electric, Dale, CGW & telefunken

Diyers can choose CS-8412 ( USD 10 more) or 8414 version.

All fit with gold plated IC Sockets.

Use Pulse engineer PE-65612 pulse Transformer for digital input.

Cable from RCA input to PE-65612 is Gotham Prof. 10070 silver digital cable.


2. Op-amp output stage PCB.
-------------------------------------

Parts- Diode was Vishay -telefunken BYV-27-150
(Ultra-fast soft receovery diodes)

REGULATOR ICs LT1033 & 1057.
All 'E' the caps was Sanyo OS-CON,Elna, Nichicon Fine, Gold , Muse,Purism Non-polar caps.

The output caps was the best Gold Purism +125 degree caps.

Small watts resistors was KOA Low ppm resistors.

Large watts was NOS Western electric, Dale, CGW & telefunken.

One pair BB Op2604 with gold plated IC sockets.

3. Tube Buffer PCB need diyers funished by themselves.
----------------------------------------------------------------------

Diode was Vishay -telefunken BYV-56G or .
(Ultra-fast soft receovery diodes)

REGULATOR ICs LT1033 & 1057 for tube filament.

can use Battery bias or Smooth choke.

All 'E' the caps was Elna, Nichicon Fine, Gold , Muse,Purism Non-polar caps. Especially the purism Non-polar caps for tube cathode. Unless U use the Battery, otherwise will not better than use this caps.

Output Caps was USA EC MKP Caps. 600V 0.47 uf.

Large watts was NOS Western electric, Dale, CGW & TFK.

Tube Sockets was Japan style silver Plated ceremic tube sockets.

One NOS Miniwatt Dario EZ80 was follow with kit.

4. Blank Multi -adapter PCB ( Free to diyers)
-------------------------------------------------------

PCB contain 8 pcs of Blank small PCBs.
Two was 74HC74 & 74HC4040 reclock.
Two 8414 to 8412 adapter.
Four(4) single op-amp to dual op-amp. Diyers can personal buy Op-2134,627,637 for the op-amp output stage.
Directly Plug & Play is OK.

Power Transformers
--------------------------
5. Three 3 pcs of C-core power transformers with double shielding.
Pls see the photos, U will interest why the sec
winding had 0~4~5 & 0~6.3. This is special for Diyer because
they can do it by yourself for the tube buffer PCB which
change 4V (RGN1064, AZ1, AZ11 mesh plate) etc, 5V ( 5V4,
5Z3) & standard follow with kit is 6X4.

Solder wire for kit.
-----------------------
2 metre of this solder wire.

Senju Lead free & Ag-Cu-Sn solder will follow with kit for diyer. I trust that solder will effect the performace & for diyer solder Gotham silver digital cable & signal cable.


Diyers can choose Added USD 20 for one match pair Dario Miniwatt EC8010 Gold pins to relief the 6C45, but a little re-work was require..but NOS EC8010 gold pins will much better than 6C45!!!!!

Cable for kit
---------------

Digital cable.

1.5 feet Gotham 10070 Prof. digital silver cable.

1M ATM KA Japan mic cable ( very smooth sound)

1M Belden Silver plated signal cable ( more detail HF sound)
or
IM Japan Junkosha silver signal cable. This is a ultra fast digital Transmittion cable.I test they both good in Digital or the analoue output.
http://www.junkosha.co.jp/english/product/digital/index.html

This is all the best that I offer to U............ Hope U will like my offer!!!!!!!!
 

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  • tda1541a ver2 kit with laser label ( qc pass already).jpg
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Ultlimate Ver.2 Twins TDA1541a Non-oversampling DAC Funish products..................

Hi,

I forgot to tell U that the price of the kit is USD330 per set. chassis is not include into it. But 3 price of C-core power transformers is include.
Price edited on tube-lover's request.

All parts contain will be same as the previous thread contain./

USD 330 will include postage. No handling charge or service charge.
Hong Kong People local purchase will same price but addition 2 pair of OPA627 for them to compensate the postage which for overseas.

thx

thomas
 
Ultlimate Ver.2 Twins TDA1541a Non-oversampling DAC Funish products..................

Hi,

yesterday night I compare the ver2 DAC with the marantz cda94 & CD72Mk2.

Test equipment was Altec 604B with electrostatic ultra high tweeter.
Electronic crossover.
Mac MC240 push low HF. Sun audio VT25/45 push HF.

I would like to say the result was very impressed. Although the ver2 was NOs DAC. CDA94 & 72Mk2 had re-clock. But the deatil was still best. especially the density of the mid-range. CD72mk2 & CDA94 is much weaker than ver2. This is only test with both op-amp output. I had not enough to test with the tube buffer. If use tube buffer,. much colour will added for the sound stage.

BTW, there will had several sound test show room on Kowloon & Hong Kong side. Location will post soon. This is best for Local ( Hong kong ) diyers.


thx

thomas
 

Attachments

  • test ver2 tda1541a dac envoirment.jpg
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Ultimate Twin TDA1541a Non-oversampling DAC with tube buffer & reclock set...........

Dear all,

I would like to say the improvement parts of Ver.2 DAC use.

TDA1541a PCB:
--------------------

1. Digital input cable from RCA to PCB.

Gotham Professional digital cable (1 feet).
GAC-1 S/PDIF-Pro (10070) Silvercable.

http://www.gotham.ch/gac/gacindex.htm

2. use Pulse transfromer to input.

Pulse engineer PE-65612.

http://www.pulseeng.com/

http://eddie.dyec.com.tw/diy-produc...ta/pe-65612.pdf

3. All TDA1541a Decoulping caps was ERO MKP1813 0.1uf 250V.
Use ERO MKP1813 0.1uf had faster refresh rate. It can
increase the detail of the 1541a chips. But........ every kit I will
follow with 28 pcs MKT 0.22 caps made in Holland which
standard use in the Marantz CD94 use for 1541a decoupling
caps. If U like them Not need to pay more money. U will get
them because this is free with the kit. ( actually its funish &
test, QC pass alrerady).

4. All 28 pcs of ERO will use Aluminium foil to shield for them, The
ground point was in the middle of the PCB which had same
distance for two chips. Ground or unGround. U decision
only!!!!!!

5. Every TDA1541a will use Copper foil to shield for them, U can
choose ground or un-ground.

6. The regulate IC. Funished kit was LT-1033 &
1085 for 1541a to supply a high speed & low internal
resistance power supply to increase the HF & detail. certainly
lower the noise too.

7. In this I would like to say very thanks for diyers in this forum
because they advise me to use this diode. excellent in this
area.
Rectifier diode for standard funish kit was Vishay telefunken
BYV-27-150 & Myv56( Ultra fast soft receovery diode). Most diyer like the rectifier diode very fast but will get more noise same time.
This BYV is much better than UF, MUR & MBR series.

8. The ground plate area hadn't decrease. But the small
blank area between the signal path & ground plate was
increase a little to prevent the capacitiance to pollute the
data steam. The small un-ground area ( copper plate ) on the
PCB was removed already to prevent the -RF- etc in the air to
effect the data steam because the un-ground copper plate
was same as ---Antenna-- will absorb the RF in the air.

9. Ver.1 most use dale 1% in the 1541a PCB but ver.2 I
suggested use low ppm resistors. same was 1% KOA series.
Now only the top model Precision series was made in japan.
The middle grade was I choose low ppm series was made in
China. So I can get them in reasonable price & use in the
Ultimate DAC.

10. Power supply. Ver.1 I use one R-core power transformer to
supply both 1541a & Op-amp PCB. Now I seperate for them.
Every PCB, ( 1541a & Op-amp) will seperate use one C-core
power trans for them, individual regulate IC( LT-1033 & 1085).
Seperate BYV27-150.
(It means every funish will follow with 3 pcs of C-core power
transformers) Pls see the photos, U will interest why the sec
winding had 0~4~5 & 0~6.3. This is special for Diyer because
they can do it by yourself for the tube buffer PCB which
change 4V (RGN1064, AZ1, AZ11 mesh plate) etc, 5V ( 5V4,
5Z3) & standard follow with kit is 6X4 & added USD 10 for
one NOS Miniwatt Dario EZ80.

11. Signal output cable.
Standard analog output cable is Belden telfon silver coated
cable to increase the HF of the signal because some people
said the non-oversampling DAC had small lack of HF. But
don't worry. I will can supply the Japn ATM KA OFC Mic cable
with funish kits. 2 feets which will not charge any more
money.

Pls go to my yahoo photobook to see the detail. Will update more this several coming date.


Yahoo photobook Login ID.

ver2dac

Password.

bait706spy877

or


http://www.imagestation.com/

Login ID.

1541dac_ver2

password 888888


this is for oversea diyers which cannot support chinese language.


thx

thomas
 

Attachments

  • full packing tda1541a ver2 kit with electrostatic package.jpg
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Ultimate Twin TDA1541a Non-oversampling DAC with tube buffer & reclock set...........

Hi,

this price was for 10sets only. over 10sets will return to USD 330 per set. This funish set was OEM, funish & test from Taiwan.

This is a funish kit, only the tube buffer PCB need funished by yourself.

U can cost half an hour to link up the power trans with the twins 1541a PCB with digital input wire, signal wire output & OPA-2604 PCB. can direcly sounded.

The tube buffer cost 2 hour to funish.

So U will get two dac. One is Op-amp output, one is tube output.

For example. A- 1541a PCB.
B- Opa-2604 PCB
C- Tube Buffer PCB.

sound with this format.

A+B or A+C.


Hong Kong will had several location for diyers, traveller to Hong kong to test & hear the performance.

I received several email ask me can directly use I2S input from CD-pro2.

It can because MY DAC had I2s input, pls see the photos.


Hope U will like them.


thx

thomas
 

Attachments

  • i2s input of twins tda1541a ver2 dac.jpg
    i2s input of twins tda1541a ver2 dac.jpg
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kiyull

Member
2004-11-06 12:15 pm
Korea
Physical dimension of PCBs?

Hi Thomas, thank you for your effort on the nice DAC.

We are designing new CD-PRO2 Player/transport enclosure using your DAC.

Would you please let me know the physical dimensions (size in cm) of PCBs since we have to decide which PCBs are enclosed in our transport?

Kiyull
 
Re: Physical dimension of PCBs?

kiyull said:
Hi Thomas, thank you for your effort on the nice DAC.

We are designing new CD-PRO2 Player/transport enclosure using your DAC.

Would you please let me know the physical dimensions (size in cm) of PCBs since we have to decide which PCBs are enclosed in our transport?

Kiyull


Hi Kiyull

The main DAC PCB is very big. The tube buffer is big, too. If you want to put them into the CD-PRO2 box, probbaly the only option will be to put the power supply to another box.

BTW, it's very easy to directly feed CD-PRO2's I2S signals to the DAC.

-finney
 
Dear Ciao.T, finney, japjag & kiyull,

Pls check mail.


sorry to too late call back. approx 20sets of kits were pass QC test & on my hand already.

I accept paypal & will use EMS post to U, normally will 2~3 days clooect. Had tracking no to trace the parcel.

price will include all include posatge , no handling charge or any.

I will offer two small parts to all for the DAC.

I had approx 400 pcs wima MKP10 0.1uf 250V on hand.

I will follow with kit until all fully posted. This is free to U because I hope to hear the result for ERO & Wima.

Ciao.T, finney & kiyull,

U both help me & advise me a lot for the DAC. I will extra with one pcs of the test print 1541a PCB for self test. Ciao, Dr.John said U can advise more about the improvement of the DAC. The test print will help U a lot to funish the higher level one. Then U can compare with my dac. I was very excited to hear the improvement, more diyers will be same too......

this is my paypal email.

[email protected]

price I email to all of your account already..

Standard street price is USD 330. With posatge & all charge.

Hong Kong will had several show room for my DAC & hong kong diyers & travellers can go to test & advise me will be more appreciate.


Kiyull the size of the PCB.

1541a --- 15cm X 19cm

tube buffer---- 15cm X 19cm

Opa2604PCB--- 15cm X 8 cm.

RE-clock PCB was free to U for test only. But the PCB can breaker down to several small pcs. So it will not count in here.

Dear japjag,

I will give U one more pcs EZ80 to compensate the extra PCB that for both of my friend to test.


Digital cable.

1.5 feet Gotham 10070 Prof. digital silver cable.

1M ATM KA Japan mic cable ( very smooth sound)

1M Belden Silver plated signal cable ( more detail HF sound)
or
IM Japan Junkosha silver signal cable. This is a ultra fast digital Transmittion cable.I test they both good in Digital or the analoue output.
http://www.junkosha.co.jp/english/p...ital/index.html


Illusus. If U had any question about to design the DAC.
I was glad to share experience.

thx

thomas
 

kiyull

Member
2004-11-06 12:15 pm
Korea
tube-lover said:

Ciao.T, finney & kiyull,

U both help me & advise me a lot for the DAC. I will extra with one pcs of the test print 1541a PCB for self test. Ciao, Dr.John said U can advise more about the improvement of the DAC. The test print will help U a lot to funish the higher level one. Then U can compare with my dac. I was very excited to hear the improvement, more diyers will be same too......

this is my paypal email.

[email protected]

price I email to all of your account already..

Standard street price is USD 330. With posatge & all charge.

Hong Kong will had several show room for my DAC & hong kong diyers & travellers can go to test & advise me will be more appreciate.


Kiyull the size of the PCB.

1541a --- 15cm X 19cm

tube buffer---- 15cm X 19cm

Opa2604PCB--- 15cm X 8 cm.

RE-clock PCB was free to U for test only. But the PCB can breaker down to several small pcs. So it will not count in here.




thomas

Hi Thomas, I sent money to above paypal account for two sets (for now). I need more in a few weeks.
Thanks,
Kiyull
 
Dear kiyull ,

I received your money ( two sets of Dac) from paypal already. I will prepare the full kit & will post to U on wednesday.
I had one question & hope U help me.
My free PCB to U( all buyers) had two re-clock on it.

74HC74 & 74HC4040.

Some of my friend test already & told me the 74HC74 had more Hifi sound. The two ending ( HF & LF) was extended so good. But 74Hc4040 will more easy to use, less extend but density of mid range will better/less hifi .

Btw, Finney & kiyull, I will sent one TCXO<2ppm. 11.2896 to U with one 74HC74 & one 74HC4040 to U to test. I hope U will get more information to more diyers ( include me) to improve more. This is DIY spirits.

I will inform U the detail the s/n for EMS.

Thx

thomas



thx

thomas
 
Hi Thomas

Thanks for the TCXO. Want me to run jitter test for you? :)

Better try a few 74VHC instead. I will send you one 74VHC74 for test.

Oh, and I will post some photos of my version 1 later here.

BTW, kiyull, I have a DIYZONE CD-PRO2, heavily modded. Now I am planning to replace the e caps on the CD-PRO2 mainboard with polymer caps. Call me crazy! Is there any way I can see your design? Thanks.


-finney
 

kiyull

Member
2004-11-06 12:15 pm
Korea
tube-lover said:
Dear kiyull ,

I received your money ( two sets of Dac) from paypal already. I will prepare the full kit & will post to U on wednesday.
I had one question & hope U help me.
My free PCB to U( all buyers) had two re-clock on it.

74HC74 & 74HC4040.

Btw, Finney & kiyull, I will sent one TCXO<2ppm. 11.2896 to U with one 74HC74 & one 74HC4040 to U to test. I hope U will get more information to more diyers ( include me) to improve more. This is DIY spirits.

thomas

Thanks Thomas

finneybear said:

BTW, kiyull, I have a DIYZONE CD-PRO2, heavily modded. Now I am planning to replace the e caps on the CD-PRO2 mainboard with polymer caps. Call me crazy! Is there any way I can see your design? Thanks.


-finney

Hi Finney,

Our new design will be focused on suspension of cd module and transformer etc.
Primary test from one of my friend reveals that the extensive suspension of transformer and cd mechanism (in commercial cd player, not CD-PRO2) gives great improvement of sound quality. Therefore we are going to apply this to CD-PRO2 module which can replace the original spring and rubber suspension.

Following is my cd-pro2 with dual 1541A S2 with I2s connection :
http://www.diyaudio.com/forums/showthread.php?postid=583674#post583674

Mine is too crowded : We are going to separate by two for player : CD-PRO2 with DAC(thomas) plus tube buffer with P/S, What do you think about the length of I2S cable? Is it possible to lengthen the cable about 30-40cm? If possible we would like to make standalone transport and standalone DAC.

Thank you in advance for any idea about I2S cable.

Kiyull
 
Ultimate Twin TDA1541a Non-oversampling DAC with tube buffer & reclock set...........

Dear kiyull ,

I was packing the DAC. Pls let me know how long was the digital cable for I2S that U need. I will free to post longer digital cable to U. will caontain three canle. One is gotham, one is aes digital cable & one is junkosha for U. Is U can supply useful information for diyers to improve my DAC or coming others diyers design in diy world. I don't care lost a little bit money for experience.


Pls le me know asap.

I will prepare for U.

Dear Martti Kauppinen,

paypal money arrived. Will EMS to U tomorrow.



thx

thomas