DAC build TDA1541A/SAA7220P/B *will take som time*

[studiostevus]

Use the google translator. Same seller also has a 7220

 

[RS232]

Or get a cheap Marantz or Philips cd player of *bay with the TDA 1541 chip.
Plenty of them around and you have the waranty that they are original ones.

Ric

 

[Mayday]

Or get a cheap Marantz or Philips cd player of *bay with the TDA 1541 chip.
Plenty of them around and you have the waranty that they are original ones.

Ric

Looks like that's the route I'll take.
Have two marantz at home, cd-50 and cd-60(undergoing modifications), I'll see if I can bring my self to cannibalize the cd-50. Otherwise I'll get a few other players using thoose IC's.

 

[Mayday]

Got a Squeezebox Classic for just shipping cost (about £6) from a very generous member on a swedish forum. This will handle PC audio alone until this dac is done. Then it'll be pc - SB - dac - amp.

 

[Mayday]

For this DAC I was thinking of using the Valab 1ppm 11.2896Mhz TCXO.

 

[Mayday]

Studiostevus:

How do you connect I2S from SB classic to TDA1541 DAC?

 

[Mayday]

Is there audible benefits to be had connecting the SB with eth-cable rather than using wireless?

 

[Mayday]

Got the Squeezebox today

Also I traded some pio caps and a tripath amp for two marantz cd-75 mkII.
One of which will be donating the TDA1541A and SAA7220P/B for this dac-project.
He also said he'd throw in some suitable tubes in case I want to use a tube output on the dac or one of the cd-players.

 

[Mayday]

Not mine, but mine is identical.

An externally hosted image should be here but it was not working when we last tested it.

Actually sounds better than I thought without external DAC.

 

[Mayday]

Got this from ebay before I knew about the fakes. What do you think guys? Got it from seller diyaudiokit.

 

[Mayday]

diyaudiokit on ebay is the same as analog metric (who was the sender on the package)

 

[Mayday]

C1, C2, C3, C4 Nichicon Audio Gold 5600uF

Can I use Nichicon 10000uF/63V KG(M) gold tune here?
Got 4 of these laying around.

C19 470pF

This is the DEM cap, I guess I'm better of using 122pf 1% Silver mica that'll result in a lock?

C73, C74 WIMA/Solen 10uF

Here I could use 3% 10uF axial MKP's right?

 

[Mayday]

Also I want to put in better diodes.

D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12 Diode 6A10

I was thinking about BYV27-200, BYV95A or are there better options?
I've used MUR860 in the past, but they are very expensive, except from hongkong/china and those are marked U860, not MUR860.

 

[Mayday]

I'm almost certain I'll get the same Clock I bought for the cd-60 for this dac as the Clock provides both 11.2896Mhz and /2 ( for tda1541a).

 

[Mayday]

This is the Analog Metrics PCB? If so it has a design flaw in that the replay clock (an XTAL OSC module) isn't locked to the SPDIF input resulting in skipped or duplicated samples every so often. Worth knowing that I feel before you begin to troubleshoot any clicks or glitches you encounter

Will this be fixed by advanced DEM re-clocking? Pics borrowed from Andrew, though I am responsible for whited out areas.

 

[AndrewGM]

...answered on other thread....yes ?

You got too many projects going on at once !!

Guess what ?....so do I !!
I'm also working on a valve buffered Gainclone...another Alpha CD Player complete rebuild and......another Alpha 5.

My psychiatrist thinks it's good for me.......( that's a joke btw )

Haven't seen him for years

 

[Mayday]

Yes, answered

Is there such a thing as too many projects? My psychiatrist never told me...

 

[Mayday]

Got the PCB today, seems to be very high quality...thick and rather heavy. Not like the Philips pcb in the cd-60.

 

[Mayday]

Could I use this for the 20-0-20Vac?
Toroid 2x18Vac 6,2A. Diam:11cm H:4,5cm

 

[abraxalito]

Could I use this for the 20-0-20Vac?

You could - it would work. But the available current is way beyond what's called for. As a result of being over-sized for the job its going to be rather prone to mains-borne interference.