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Old 22nd February 2012, 05:11 PM   #1021
evette is offline evette  Canada
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R2=390 ohms r3= 47k
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Old 22nd February 2012, 05:13 PM   #1022
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try making r2=1200 ohms it will work fine evette
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Old 22nd February 2012, 06:46 PM   #1023
BMW850 is offline BMW850  Netherlands
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I've changed 390R resistance to a 2.2 K resistor.
Now regulates my Fettle Preamp better, it was 4 steps on listening quality with the 41-step series attenuator of Acoustic Dimension.
Now it take 10 steps, much nicer listening with the with the 41-step series attenuator.

Have now ordered 2 pieces Charcroft Z-Foil Resistors 2K2 0.4 W.
For replacement of the 2.2 K TAKMAN Audio Metal Film Resistors.
Wonder what the differences will be.

Regards,
Rudy
Now I listen with the Charcroft Z-Foil Resistors 2K2 0.4 w.
Upcoming weekend I will tell you all how it sounds in my set.

I got the idea that certain tweeks, not appreciated in this topic.
I think it people seen this tweek as snake oil because I also get little to no response my entry in connection with the 1uF in signal path.

Regards,
Rudy
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Last edited by BMW850; 22nd February 2012 at 07:01 PM.
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Old 22nd February 2012, 07:17 PM   #1024
evette is offline evette  Canada
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You really think your going to hear a Difference? Evette Why waste the Money?
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Old 22nd February 2012, 07:19 PM   #1025
evette is offline evette  Canada
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Your little trick with the 1uf cap. Is known to most Diy,ers. Evette
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Old 22nd February 2012, 07:41 PM   #1026
BMW850 is offline BMW850  Netherlands
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I will then pull me back quietly, in this topic with my modifications

Regards,
Rudy
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Old 22nd February 2012, 07:50 PM   #1027
a.wayne is offline a.wayne  United States
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Quote:
Originally Posted by evette View Post
You are correct Gain =r2+r3\r2===121.5 Evette

keep it coming .....

Quote:
Originally Posted by BMW850 View Post
Now I listen with the Charcroft Z-Foil Resistors 2K2 0.4 w.
Upcoming weekend I will tell you all how it sounds in my set.

I got the idea that certain tweeks, not appreciated in this topic.
I think it people seen this tweek as snake oil because I also get little to no response my entry in connection with the 1uF in signal path.

Regards,
Rudy
Not sure about the others , but i never intended to use input cap ...

Quote:
Originally Posted by BMW850 View Post
I will then pull me back quietly, in this topic with my modifications

Regards,
Rudy
Please post what you do , so far we are happy to know the MK3 is indestructible..

On a serious note , post what you find, there is always something to learn/ do , if you start to play with the NFB values , i would be interested in hearing your discovery ...
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Old 22nd February 2012, 07:58 PM   #1028
evette is offline evette  Canada
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Mr. Rudy Sir, Please do not take offence to what I posted I enjoy reading your changes to your amps. However lets carry your mods a little further,,by putting in a seperate front end supply and then driving the output stages,,Then you,ll really hear a difference.
Again forgive me for offending you. Kisses Evette
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Old 22nd February 2012, 08:02 PM   #1029
evette is offline evette  Canada
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Hey Mr. Wayne I,m sure your working very hard on your amps and I,m sure you,ll have many wonderfull hours tinkering with them is there anything I can help you With
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Old 22nd February 2012, 08:14 PM   #1030
BMW850 is offline BMW850  Netherlands
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Quote:
Originally Posted by evette View Post
Mr. Rudy Sir, Please do not take offence to what I posted I enjoy reading your changes to your amps. However lets carry your mods a little further,,by putting in a seperate front end supply and then driving the output stages,,Then you,ll really hear a difference.
Again forgive me for offending you. Kisses Evette
Hi Evette,

It is no problem, I thought there was no interest in modifications that I do.
Tell something more about the modification where you're talking about, maybe to design a new board?

Regards,
Rudy
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