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DAC-END R (ES9018) full assembled board

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#782
Are these thru-holes intended for mounting a shield?

photo.jpg
 
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#783
yildiray said:
hi quanghao,

Could you explain the complate dac price ? i missed it i guess.Am i have to make extra 150 dolar payment for DAC?
Click to expand...

DAC-END R (ES9018) complete
you have purchased the following items:

1. - DAC module assembled and tested with all componentsfive shunt regulator
2. - DAC controller assembled and tested
3. - Chassie
4. - Transformer 2 x 6-0V 2A + 4 x 18V 1A or 2 x 9V 2A + 2 x 18V 1A
5. - Output stage, only passive I/V

I will be assembling, finishing and inspection include the following:


1. All Input and output connectors
2. 4 x opam 2134 for IV
3. installation of parts, inspection and finishing
4. one year warranty for all finished products
5. shipped to you.


Your job: pay me $ 150 for installation costs,
and freight (if you have not already paid), to receive it and enjoy the music.

quanghao
 
#786
Hi all,

I'm confused about the transformer requirement. On page 17, Quanghao mentioned that the the DAC can be powered by max 0-9V and 18-0-18V. And now it become max 0-6.3V. Which one is correct ? I know that higher voltage = higher regulator temperature, but is 9V still acceptable ?

I already have an r-core 2x9V and finding good 6V transformer is not easy. The reason why I didn't buy the trafo from Quanghao is because I want to use what I already have. For the analog stage, temporarily I'll use Noratel toroid 2x18v 160VA while I'll get smaller r-core with four 18v secondary winding that I'll wire as 2 center tapped output.

These are the transformers that I will use, pls confirm that they're OK :
2 x 9V 30VA which I have already
4 x 18V 40VA

or

2 x 18V 30VA

or use only 1 of this :

0-6.3 X2 (1.1A),320-0-320(60mA), 0-15 X2 (1.5A)
 
#788
quanghao said:
DAC-END R (ES9018) complete
you have purchased the following items:

1. - DAC module assembled and tested with all componentsfive shunt regulator
2. - DAC controller assembled and tested
3. - Chassie
4. - Transformer 2 x 6-0V 2A + 4 x 18V 1A or 2 x 9V 2A + 2 x 18V 1A
5. - Output stage, only passive I/V

I will be assembling, finishing and inspection include the following:


1. All Input and output connectors
2. 4 x opam 2134 for IV
3. installation of parts, inspection and finishing
4. one year warranty for all finished products
5. shipped to you.


Your job: pay me $ 150 for installation costs,
and freight (if you have not already paid), to receive it and enjoy the music.

quanghao
Click to expand...

Hi Quanghao, I have already sent a pm but not had a response. I have paid for 2x opa2134 and 2x opa627. I presume you will fit these instead of the 4x opa2134 if I pay the extra $150?
 
#789
Hi audiodesign/quanghao,

1. What is the highest frequency that the coaxial input can support?
I have tested the coaxial input that frequencies higher than 48kHz were not able to lock. Any clue?

2. How do we set those dip switches?
 

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#790
quanghao said:
i2k92 2 x 9V 30VA which I have already[/URL said:
4 x 18V 40VA

I'm so sorry you about this,

1. you can use this, but pay attention to the temperature for 2 LT 1963.

2.in the long term should you use low voltage transformer more, to secure the heat
thanks
Click to expand...

Thanks Quanghao. BTW, congrats for the baby. I can imagine how difficult to handle 2 babies at the same time (the DAC & real human baby).
Click to expand...
 
#792
I don't have the DAC yet, but I was thinking that it would be nice if a document could be prepared by Quanghao and Audiodesign about how to setup the DAC properly and what is the meaning of each jumper and pin...
I think that all the informations are alreay in the thread, but I must confess that I'm lost... maybe everything could just be placed in the first post of the discussion... this would be really helpful!
Thanks
 
#793
Halook said:
Hi audiodesign/quanghao,

1. What is the highest frequency that the coaxial input can support?
I have tested the coaxial input that frequencies higher than 48kHz were not able to lock. Any clue?
Click to expand...

I have tested the toslink optical and spdif coax inputs until 96KHz with different USB-spdif device without problems.

Which is your spdif device and cable ?
 
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#800
Hi Quanghao,

Just sent USD 150 for installation of full DAC. Please use 2 Toslink inputs as discussed (Toslink instead of AES/EBU). I already have an Amanero USB input. Can you please add a cut-out in the chassis so I can add the Amanero myself?
Thanks!

Matt
 
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