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Old 26th August 2012, 03:45 PM   #7101
Bksabath is offline Bksabath  United Kingdom
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I look at the Paradise as a child, a rather perfect one though. It will mature and grow.
I was always very open to criticism. How else can i progress ?
Hear hear
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Old 26th August 2012, 03:56 PM   #7102
Joachim Gerhard is offline Joachim Gerhard  Germany
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The negative side is : you change the original design and loose the freshness of the first shot. I will not change mine. Lets see what happens when we do the shootout in september.
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Old 26th August 2012, 04:13 PM   #7103
Bksabath is offline Bksabath  United Kingdom
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The negative side is : you change the original design and loose the freshness of the first shot. I will not change mine. Lets see what happens when we do the shootout in september.
I am luky as I will have R3 boards to keep as original and the R2 beta boards to play with and compare

Meybe I shuld have got an extra set
I can see next group buy realy soon
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Old 26th August 2012, 04:18 PM   #7104
Joachim Gerhard is offline Joachim Gerhard  Germany
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That is a good position you are in !
What will be really important now is that we focus on helping the people to make their Paradise work, a lot of stupid mistakes can happen.
Happened to me including swapping PNP-NPN and putting in some Leds the opposite way.
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Old 26th August 2012, 04:28 PM   #7105
RCruz is offline RCruz  Switzerland
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Originally Posted by Joachim Gerhard View Post
Taking out one 6800uF of each double stack puts the -3dB frequency one octave higher.
They are totally over dimensioned to begin with.
When you build the R3, Ricardo you could leave half of them out at the beginning and listen how that sounds. Soldering the caps out of your R2 boards is of cause possible but some kind of dirty work.
I found that the Lundals are not that sensitive of loading. I would try a 10kOhm loading resistor. That is in my opinion the highest reasonable value. That would load the Tuscany with 50 Ohm. You could even try without any loading resistor. The secondary impedance of the transformer allows a DC biasing path through the input stage so it may amplify.
Thank you so much.

Good advise... I am now in paradise listening to R2... I would not like to risk any more hot iron on it again.
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Old 26th August 2012, 04:32 PM   #7106
Joachim Gerhard is offline Joachim Gerhard  Germany
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What went wrong with the other channel ?
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Old 26th August 2012, 04:37 PM   #7107
RCruz is offline RCruz  Switzerland
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The same as the first one... the small footprint for the k170 on the output buffer led to micro shortcircuit the induced output offset.... many soldering - desoldering actions gave way to pad lifting... now the jfet is under the board in a p2p style.
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Old 26th August 2012, 05:26 PM   #7108
Joachim Gerhard is offline Joachim Gerhard  Germany
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Good that Hesener changed the footprint. Things like that can drive you crazy.
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Old 26th August 2012, 05:48 PM   #7109
Bksabath is offline Bksabath  United Kingdom
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Quote:
Originally Posted by Joachim Gerhard View Post
That is a good position you are in !
What will be really important now is that we focus on helping the people to make their Paradise work, a lot of stupid mistakes can happen.
Happened to me including swapping PNP-NPN and putting in some Leds the opposite way.
Quote:
Originally Posted by Joachim Gerhard View Post
Good that Hesener changed the footprint. Things like that can drive you crazy.

Absolutely right

Yes there where a few emails behind the curtains while I was building beta glad that I was able to make small contribution.

Another one was one of capacitor the wrong way around in my build
I did check and dubleduble check but still made that mistake You been warned

Just waiting for build guide maybe it need Proof reading so just PM
One not to be forgotten is: Keep pins on small regulator transistors realy shorth as otherwise they touch the heat sink
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Old 26th August 2012, 05:50 PM   #7110
Joachim Gerhard is offline Joachim Gerhard  Germany
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Yes, keep them short, happened to me too and then i simply bend them over a bit...
terrible fix...
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