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Old 18th February 2015, 05:44 PM   #1
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Default Output stage for the Soekris R2R

Hi all, this is an area to discuss output designs for the DAC. Obviously with easy access to the raw 1.4v signal the possibilities are endless!

For now I have settled on raw output to 6111 tube Lampizator board for main drivers and SE output from on board opamps to stereo subs. Great tone, open sound, and NO GLARE.
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Old 18th February 2015, 07:32 PM   #2
CeeVee is offline CeeVee  Portugal
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Default Boberly Buffer-Spencer's version

Maybe something along these lines...to kick of what promises to be an interesting thread.

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Old 18th February 2015, 08:48 PM   #3
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Originally Posted by CeeVee View Post
Maybe something along these lines...to kick of what promises to be an interesting thread.

Can you post a link to the thread this was taken from please
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Old 18th February 2015, 09:33 PM   #4
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Quote:
Originally Posted by robertrowett View Post
For now I have settled on raw output to 6111 tube Lampizator board for main drivers and SE output from on board opamps to stereo subs. Great tone, open sound, and NO GLARE.
Could you be a little more specific about the 6111 tube Lampizator board?
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Old 18th February 2015, 09:51 PM   #5
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Quote:
Originally Posted by SebastianL View Post
Could you be a little more specific about the 6111 tube Lampizator board?
Does he mean this?

Lampizator - 6N16 Lampizator kit ver 3.0

Ray
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Old 18th February 2015, 11:26 PM   #6
CeeVee is offline CeeVee  Portugal
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Quote:
Originally Posted by spzzzzkt View Post
Can you post a link to the thread this was taken from please
Yes ofcourse.

Itīs in Spencer's site : FetAudio

Last edited by CeeVee; 18th February 2015 at 11:31 PM.
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Old 18th February 2015, 11:28 PM   #7
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Quote:
Originally Posted by robertrowett View Post
Great tone, open sound, and NO GLARE.
Was that compared with the opamp buffered output on the board or the unbuffered output?

I really should hook up the raw output to my aleph p1.7 preamp and see how the DAM1021 sounds with the op-amps out of the signal path.

Last edited by spzzzzkt; 18th February 2015 at 11:34 PM.
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Old 19th February 2015, 04:32 AM   #8
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This is the kit I am talking about.

Lampizator - STEP 1

I chose it because I used it previously to buffer spdif. I repopulated the board for stereo and fed from raw output stage.

I compared the sound to the unbuffered output and the opamp buffered. In my system it is the most relaxed sound with the NOS filter loaded. I like the raw output second best. To be fair I tapped the balanced outputs for se use (+ and ground), so I have not listened to the balanced outputs as intended.
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Old 19th February 2015, 07:53 AM   #9
Dimdim is offline Dimdim  Greece
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Originally Posted by CeeVee View Post
Yes ofcourse.

Itīs in Spencer's site : FetAudio
This looks interesting but it is a balanced output stage. We are looking for one that is SE (unless someone has two DAM boards and is willing to go full balanced).

Anyone know of such a JFET-based one? It would have to provide some gain as well..
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Old 19th February 2015, 12:38 PM   #10
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SE one is also in Spencerīs site.
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