FS: DIR9001 to CS8412 converter board

[theAnonymous1]

You can add CS4329 to the list.

There is a National IC DS26C32ATN quad differential line receiver feeding the input to the converter board. This is to switch between the coaxial and optical inputs.

 

[eddylws]

Hi Spancer,

attach below is the schematic.
Please do let me know whether it fit to my DAc or not.

Thanks

Eddy Lim

 

[spencer]

Eddy,

I have a 1541 DAC and I shall try on mine first before I can say OK or not. Please wait as I am having holidays till Jan 7 now.

Your DAC has simple input circuit and direct couple to 1541 DAC chip and should have higher chance BUT I really cannot gurantee 100% successful rate.

Those who has used ok on Thomas' 1541 DAC may share their experience here first. Thank you.

Spencer

 

[Andypairo]

Hi Spencer,
last time we talked about it it seemed that your board wasn't compatible with TDA1541A, but now you report some success with it: can you provide more details?
I'd be interested in using it in my NOS Dac.

Cheers

Andrea

PS The BJTs are arrived.

 

[wimdehaan]

Now who has some CS4390 for me.

I have one left, a CS4390-KP EP.

Do contact me if your are intersted, price is upto you, I guess you will know what's reasonable. Cash money will only do (this in euro).

Wim

 

[Maousse]

Hi Spencer,

I'm interrested in 2 kits w/o DIR9001.
Do you still have some in stock?

Thanks,
Trung

 

[spencer]

Andrea,
I have not able to make it work in my TDA1541 DAC yet but it is one buyer who told me that it is working with a 1541 DAC. Thus I said I am going to try on my 1541 DAC again.

Trung,
Yes still have stock but I am out of HK till Jan 7 and thus will not be able to handle any shipment. Please wait.

Spencer

 

[spencer]

As promised, here is the photo how 9001 converter board is used in the TDA1541 DAC.

Notes:
1. The input of the DAC only used a pulse 1:1 transformer couple from the SPDIF signal.
2. 256fs and I2S output mode of the 9001 is used.

Jumper setting are:
J1/J2/J3 short
J4 and J5 open

Enjoy!

 

[spencer]

Update of the pin assignment document.

 

[eddylws]

I am using CD PRO2, can my CD PRO I2S direct connect to the DIR9001?

thanks

Eddy Lim

 

[spencer]

Eddy,

9001 is a receiver for SPDIF signal, NOT I2S type.

Spencer

 

[eddylws]

Ok... i would like to have one Full Kit, how much is the full kit Plus shipping.

I will pay you to paypal.

Thanks

Eddy Lim

 

[spencer]

Eddy, PM sent.

 

[eddylws]

Hi Spancer,

Please kindly check money have send.

 

[breizheau]

Hi Spencer,
i am interested but 2 full kits. Please send me PM to confirm.

Olivier

 

[Andypairo]

As promised, here is the photo how 9001 converter board is used in the TDA1541 DAC.

Notes:
1. The input of the DAC only used a pulse 1:1 transformer couple from the SPDIF signal.
2. 256fs and I2S output mode of the 9001 is used.

Jumper setting are:
J1/J2/J3 short
J4 and J5 open

Enjoy!

Hi Spencer,
I see that the DAC board also has a SAA7220 digital filter.
Does the SAA perform a format conversion or the IIS signal can go (non-os) straight to the TDA?

Cheers

Andrea

 

[theAnonymous1]

I have 5 pcs. each of the three active components required for this board. E-mail me if anyone needs them.

 

[spencer]

Andrea,

The SAA7220 is used as a 4x oversample digital filter. Without SAA7220, it is NOS. I use SAA7220 because I use jfet IV (similar to pass D1 IV) so that there is less noise if I use 4x over sample. Or best 8x over sample digital filter.

Spencer

 

[ggta]

Hi Spencer!


Is it still possible to have a full kit? Please send a PM to confirm, I'll pay with Paypal

Thanks

 

[Andypairo]

Andrea,

The SAA7220 is used as a 4x oversample digital filter. Without SAA7220, it is NOS. I use SAA7220 because I use jfet IV (similar to pass D1 IV) so that there is less noise if I use 4x over sample. Or best 8x over sample digital filter.

Spencer

Spencer,
thanks for the reply. Did you try runnung the DAC without the SAA7220?

Cheers

Andrea