Siemens - Klangfilm
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Siemens Sf V 6.4
modification for hifi use |
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I know that negative feedback is not really popular around single
ended listeners, but in this case the uncontrolled bass, the high
hum and noise level and the bad high frequency response make a
slight feedback necessary. And this is very easy: |
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1. Remove
cap
2. Remove
resistor 1MOhm
3. Unsolder
yellow cable
4. add blue
cable
5. add 2k2
resistor
6. solder
yellow cable to the green one |
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Original condition |
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After modifiaction |
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After
this light modification you will not recognize the amp you
heard before !! Keep in mind that it is much better to use the
power stage only. |
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