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20th July 2011, 09:51 AM
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#2 |
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diyAudio Member
Join Date: Jul 2011
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forgot the link
 Guitar Control - RED - Page69
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20th July 2011, 10:18 AM
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#3 |
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diyAudio Member
Join Date: Mar 2010
Location: Santiago, RS/ Brasil
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Left open (not connected).
When switch is in the +10dB position, only R4 is in the path. In both other positions, another resistor is paralleled to R4, reducing its value. So, there are three possible values to the negative feedback. Hence, three different gains to this preamplifier. This kind of switching process prevents spikes in the output. Cheers, Max.
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Last edited by smartx21; 20th July 2011 at 10:20 AM. |
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