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Old 19th July 2012, 01:54 PM   #6291
RCruz is offline RCruz  Switzerland
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Thank you Joachim.

Maybe the malfunctioning shunt is responsible for the absence of sound... strangely the shunts output the correct +-24V but maybe there is not enough current.
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Old 19th July 2012, 03:04 PM   #6292
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Quote:
Originally Posted by RCruz View Post
Thank you Joachim.

Maybe the malfunctioning shunt is responsible for the absence of sound... strangely the shunts output the correct +-24V but maybe there is not enough current.
Good that you have found the problem, as the output voltage was 24V this problem should not have any problems (other than sub-optimal regulation). P.s. Be shure to check the driver transistor.
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Old 19th July 2012, 06:50 PM   #6293
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Which is the driver transistor ?
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Old 19th July 2012, 07:19 PM   #6294
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That must be a BC near and connected to the TIP31C.
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Old 19th July 2012, 07:44 PM   #6295
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Perfect, I was planning to replace it as well..... Now letīs see if curing the ccs part of the shunt solves the problem.... I wonder..... I miss my scope.

In the mean time I am collecting parts for the R2
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Old 22nd July 2012, 03:57 PM   #6296
RCruz is offline RCruz  Switzerland
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Quote:
Originally Posted by Joachim Gerhard View Post
In total the values are :
11nF
33.3nF
9.1k
73.5k
Reading the boom that Hesener sent I have the same values but in the schematic, the values are different.... Is there a final schematic with the correct values for paradise r2 ?
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Old 22nd July 2012, 04:34 PM   #6297
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I used the values in post 6296 and got results that i posted. That are my official values.
0.75dB plus in the bass and 0.25dB plus in the treble. That was a deliberate choice by MiiB and me. Getting away the 0.75dB gain at 20Hz is easy. Just make the 73.5kOhm resistor a bit smaller.
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Old 22nd July 2012, 04:35 PM   #6298
RCruz is offline RCruz  Switzerland
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Originally Posted by RCruz View Post
Reading the boom that Hesener sent I have the same values but in the schematic, the values are different.... Is there a final schematic with the correct values for paradise r2 ?
Sorry... just found it hidden in hesennerīs box
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Old 22nd July 2012, 04:45 PM   #6299
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No problem, this is a complex project and got even me confused at times. The R2 on the other hand is a very good stage where all contributors can be proud of.
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Old 22nd July 2012, 04:58 PM   #6300
RCruz is offline RCruz  Switzerland
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I am working on it now...

As for the non working original paradise, I have bad news.. removing the power transistor from the shunt was a disaster.. the pads lifted making it impossible to replace.. I will leave it as is for now.
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