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DAC-END R (ES9018) full assembled board

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audiodesign

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MattMax

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quanghao

quanghao

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quanghao.com/
MattMax said:
1.

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Click to expand...

THANKS
 

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Last edited:
danny_66

danny_66

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Joined 2005
sipo75 said:
Is the orientation of this capacitors of any concern? Are they electrolytics?
Click to expand...
Yes, they are high quality Sanyo Oscons.

I think that the lower output stage has one cap wrong orientated.
It should be like the upper one in your picture.

The opamps have a dual power supply: +15 and -15,
the cap for +15 has the marked(-) terminal connected to ground(0v) and
the cap for -15 has the marked(-) terminal connected to -15v
 
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TarnishedEars

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Joined 2013
What type of connectors are being used to connect between the DAC-board and the I/V-board? I ask because I'd like to source some extras so that I can easily play-around with various output stage topologies.

Also: Are there any special types of RCA, XLR and BNC connectors which will fit the best inside of these units?
 
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TarnishedEars

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I'm fully paid for everything else, but I want to build it myself.

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But would you mind answering these questions?
TarnishedEars said:
What type of connectors are being used to connect between the DAC-board and the I/V-board? I ask because I'd like to source some extras so that I can easily play-around with various output stage topologies.

Also: Are there any special types of RCA, XLR and BNC connectors which will fit the best inside of these units?
Click to expand...
 
Last edited:
S

smoothquark

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Joined 2010
I've paid the extra $150. I note that the spreadsheet has a new column (Column J) now for those who have paid the extra $150 but there is only one name registered so far (Nicmac). I hope quanghao fits in 2x opa627 and 2x opa2134, which is what I have bought instead of the 4x opa2134 as stated. How about the power supply? I live in the UK - supposed to be 230V here. By the way, does anyone think whether a DC filter like this (L C Audio Technology / DC Filter) would help? Thanks.

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sipo75

Member
Joined 2013
quanghao said:
It was my fault,

sorry you, I send you another one on Monday of next week, please send it to me by mail form.

Thank you!
quanghao
Click to expand...

If this is directed at me...

Thank you but this is not necessary. I will fix it. Maybe you can send me some thru-hole replacement caps though or point me to an appropriate replacement part. I have never worked with SMD and I have not yet figured out how to remove these electrolytic SMD caps. So they might not survive the operation. I can't even see the leads.
 
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