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Old 11th December 2012, 04:15 AM   #11
EUVL is offline EUVL  Europe
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All to come in due course.
Part II of the article will be on active device choices.
Some time this week.




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Old 11th December 2012, 04:29 AM   #12
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I hope it's not j74 or j109

Didiet
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Old 11th December 2012, 08:21 AM   #13
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It will be 2SJ74's.
But of course 2SJ109 would be even better.




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Old 11th December 2012, 12:20 PM   #14
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Hi Patrick,

I´m glad I still have some 74's

Maybe it is time to build something to replace my X-BOSOZ.

William
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Old 11th December 2012, 02:11 PM   #15
EUVL is offline EUVL  Europe
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We shall make sure that those who subscribe for the project will get perfectly matched (curve traced) 2SJ74s.
We bought enough stock before it went obsolete.




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Old 11th December 2012, 03:34 PM   #16
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Quote:
Originally Posted by EUVL View Post
We shall make sure that those who subscribe for the project will get perfectly matched (curve traced) 2SJ74s.
We bought enough stock before it went obsolete.




Patrick
This is very good news.
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Old 11th December 2012, 03:39 PM   #17
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Quote:
Originally Posted by EUVL View Post
We shall make sure that those who subscribe for the project will get perfectly matched (curve traced) 2SJ74s.
Wow, speaking about a novelty !
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Old 11th December 2012, 04:04 PM   #18
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This preamp idea is fascinating!
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Old 11th December 2012, 04:58 PM   #19
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and where (or when) is it possible to subscribe?

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Old 11th December 2012, 06:35 PM   #20
EUVL is offline EUVL  Europe
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I received multiple PMs asking about what we intend to do with this preamp project.
Well, as Jacco said, no novelty. We shall do it exactly the same way as the F5X project, with some slight changes.

That means we shall do all the development work ourselves, including measurements and listening tests.
Then we might choose a few experienced DIYers as Beta Testers to verify the design for public acceptance.
When all is ready, we shall offer it as a fully integrated project, just the same way as F5X Batch 2.
The Gerber files for the preamp PCB will be offered to the DIY Audio forum for sales to those who just want PCBs.
Also the same as the F5X.

Time frame ?
We hope to finish building and testing the prototype in Spring 2013, at about the same time as we deliver F5X Batch 2.
Give it another month for Beta testing which might start in Febraury (in parallel with proto tests).
So probably ready for subscription in May 2013.
We'll announce when we are ready. Please be patient.

We'll first publish all 4 parts of the article, hopefully before the end of 2012.


But our sincere thanks for your interest,
Patrick
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