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Quanghao Audio Design Quanghao Audio Design is a producer of DIY Audiophile Kits and PCB boards, selected from many listening tests!

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Old 3rd May 2010, 05:43 AM   #1561
cchean is offline cchean  United States
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Join Date: Dec 2008
Quote:
Originally Posted by quanghao View Post
You can write new group please!
Thank you!
1. kannan = full set
Quanghao,

I am new to this thread. I want to build the dac end dac, how many boards I need and how to order them?
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Old 3rd May 2010, 05:51 AM   #1562
housing is offline housing  Hong Kong
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Join Date: Nov 2006
Quote:
Originally Posted by fredlock View Post

I also bought an R80-36 transformer fro Diyclub and its 230Vac secondary outputs 250Vac reading on my fluke meter, the 260Vac secondary outputs 283Vac. I don't know why it's reading too high.
I have bought the same transformer for the tube IV stage. That's normal due to regulation of the transformer. You will get the specified AC voltage if the transformer is fully loaded.

Last edited by housing; 3rd May 2010 at 06:09 AM.
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Old 3rd May 2010, 06:42 AM   #1563
fredlock is offline fredlock  United States
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Join Date: Jan 2008
Quote:
Originally Posted by housing View Post
I have bought the same transformer for the tube IV stage. That's normal due to regulation of the transformer. You will get the specified AC voltage if the transformer is fully loaded.
That's what I thought too, but I'm still getting 280Vac even with the load.

I finally fixed the problem with the LED not turning off when plug in to a CD. It was a cold solder on the CS8414 pins. I retouch the soldering and now I'm listening to music. Very cool! very nice Dac. I like the sound, as what everybody says. The only disadvantage is, it's HOT. My next plan is to incorporate a USB to SPDIF converter board so I can connect it to my laptop or desktop computer.

How about you Housing, is your Dac done?


Last edited by fredlock; 3rd May 2010 at 06:44 AM.
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Old 3rd May 2010, 06:58 AM   #1564
pathetic is offline pathetic  Australia
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Join Date: Sep 2006
I'm gonna start a new list for a full set PCB:

- PCB- DAC END 2
- PCB- Salas Shunt For DAC
- PCB- I/V stage
- PCB- 10M45 for I/V

1. pathetic (1 set)
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Old 3rd May 2010, 07:09 AM   #1565
flocchini is offline flocchini  United States
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Join Date: Feb 2004
Location: Davis,CA
Quote:
Originally Posted by quanghao View Post
Yes! i test it, Some use TL 431 is not good, but after Salas shunt it is good!
I want try to make all Salas shunt for DAC-end 2. Now I'm testing it. if it is good i can reply!

PM: And I use Salas Shunt HV for IV, the sound is excellent,
One test with 6h30pI or 6h6, I show the sound is very very natural. sound more realistic and very detailed. I think it fits the sound quality of the AD 1865. I can say I love 6h30.
Best regard!
Thank you!


Quanghao:

Are you going to to a 6H6P board?

I will be interested in the Salas HV board to use with the E182CC/5687?

Thanks

Bob

Quanghao
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Old 3rd May 2010, 08:34 AM   #1566
quanghao is offline quanghao  Viet Nam
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Join Date: Sep 2009
Location: Vietnam
Send a message via Yahoo to quanghao OLD THREAD DAC End by Andrea Ciuffoli
Yes! you can see the circuit
Attached Images
File Type: jpg PRE-IV-by-Andrea-quanghao.jpg (183.7 KB, 464 views)
__________________
The Best DAC is no DAC http://www.audiodesignguide.com/DSC2/index.html
ES9038PRO: http://quanghao.com/
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Old 3rd May 2010, 03:57 PM   #1567
ksnider1 is offline ksnider1  United States
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Join Date: Dec 2009
Default I/V stage relay

Does anyone have mouser part for I/V stage relay ?

Thanks
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Old 3rd May 2010, 04:14 PM   #1568
housing is offline housing  Hong Kong
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Join Date: Nov 2006
Quote:
Originally Posted by ksnider1 View Post
Does anyone have mouser part for I/V stage relay ?

Thanks
Mouser Part #: 769-DS2Y-S-DC5V
Manufacturer Part #: DS2Y-S-DC5V
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Old 3rd May 2010, 04:36 PM   #1569
cchean is offline cchean  United States
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Join Date: Dec 2008
Quote:
Originally Posted by pathetic View Post
I'm gonna start a new list for a full set PCB:

- PCB- DAC END 2
- PCB- Salas Shunt For DAC
- PCB- I/V stage
- PCB- 10M45 for I/V

1. pathetic (1 set)

1. pathetic (1 set)
2. cchean (2 sets)
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Old 3rd May 2010, 05:15 PM   #1570
ksnider1 is offline ksnider1  United States
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Quote:
Originally Posted by housing View Post
Mouser Part #: 769-DS2Y-S-DC5V
Manufacturer Part #: DS2Y-S-DC5V
Thanks housing
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