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Old 5th April 2017, 02:55 PM   #271
analog_sa is offline analog_sa  Europe
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Super V/i converted (LL1684 )
Quote:
Originally Posted by TioFrancotirador View Post
Have you done it like that? Does it work?
I have not, but i guarantee it works.
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Old 5th April 2017, 03:14 PM   #272
TioFrancotirador is offline TioFrancotirador  Poland
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Originally Posted by analog_sa View Post
I have not, but i guarantee it works.
To expensive to be guinea pig.
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Old 5th April 2017, 03:16 PM   #273
analog_sa is offline analog_sa  Europe
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Sorry, assumed you already have some transformers.
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Old 5th April 2017, 03:17 PM   #274
TioFrancotirador is offline TioFrancotirador  Poland
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Originally Posted by analog_sa View Post
Sorry, assumed you already have some transformers.
I do have LL1684 and PCB for them, but they did not work well without the caps.
It would be great if anyone would present how to wire es9038pro with LL1684 in a way were:
- sabre works in voltage mode (no additional gain needed)
- there are no caps
- there are no tubes
- SE or balanced output
So transformer simply eliminates DC offset. Same is in Teramoto Finement transformer. Only load resistor in case of SE output.

Last edited by TioFrancotirador; 5th April 2017 at 03:36 PM.
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Old 5th April 2017, 03:24 PM   #275
analog_sa is offline analog_sa  Europe
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By saying "without" do you mean short-circuiting the caps or not installing them?
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Old 5th April 2017, 03:29 PM   #276
TioFrancotirador is offline TioFrancotirador  Poland
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Originally Posted by analog_sa View Post
By saying "without" do you mean short-circuiting the caps or not installing them?
Good question. From what I remember I think I just removed caps.
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Old 5th April 2017, 03:41 PM   #277
analog_sa is offline analog_sa  Europe
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This probably explains the strange sound then.
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Old 5th April 2017, 03:44 PM   #278
TioFrancotirador is offline TioFrancotirador  Poland
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Originally Posted by analog_sa View Post
This probably explains the strange sound then.
So literally you suggest elimination of this 2,2-22uf cap and 10k resistor and shorting it to ground (9,10 pinout to GND in case of LL1684), right?

Last edited by TioFrancotirador; 5th April 2017 at 03:49 PM.
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Old 5th April 2017, 04:08 PM   #279
analog_sa is offline analog_sa  Europe
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From what i gather the caps are there in order to preserve the 1.65v bias at the 9018 outputs. Active i/v or v/v stages face the same dilemma. How important is this i frankly have no idea. Connecting a low resistance transformer to ground will obviously change this potential. Would it impede the 9018 performance? I don't know. It is certainly safe to try as many have already found out. Is the sound better or worse? Dunno.

But yes, shorting the caps and resistor will allow you to conduct a very easy experiment. At least it will negate any effect the caps may have on sound.
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Old 5th April 2017, 05:56 PM   #280
TioFrancotirador is offline TioFrancotirador  Poland
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Originally Posted by analog_sa View Post
From what i gather the caps are there in order to preserve the 1.65v bias at the 9018 outputs. Active i/v or v/v stages face the same dilemma. How important is this i frankly have no idea. Connecting a low resistance transformer to ground will obviously change this potential. Would it impede the 9018 performance? I don't know. It is certainly safe to try as many have already found out. Is the sound better or worse? Dunno.

But yes, shorting the caps and resistor will allow you to conduct a very easy experiment. At least it will negate any effect the caps may have on sound.
In one of my DACs I have Super V/I LL1684 connected to akm4490 since I like its sound better than es9018 in voltage mode.

So, I shorted 10uf cap and 10k in this stage and ... it works and it sounds great,great,great!!!

Akm4490 is full differential voltage mode output DAC with dc offset, which is same as sabre in voltage mode, so Super V/I LL1684 without cap and resistor should also work for es90x8 in voltage mode.

Thanks!

Last edited by TioFrancotirador; 5th April 2017 at 06:07 PM.
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