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8th April 2010, 01:52 AM
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#1 |
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diyAudio Member
Join Date: Jul 2006
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Marshall valvestate 8004 copy
Ok so first of all i have some spare Tda1514 at home that i want to use.
I serched the web and found that Marshall used this in the Valvestate 8004. So i downloaded the schematic and started by making a parts list but i have some problems. I can't see the gain knobs on the diagram. Could someone help me. i am missing something?? regards |
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9th April 2010, 01:26 PM
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#2 |
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diyAudio Member
Join Date: Jul 2007
Location: Cape Town
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don't know the amp but it seems it didn't have a gain setting.
http://mekk.jp/photo/CA370126-thumb-300x225.jpg Easiest will be to just add a attenuator at the input. |
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9th April 2010, 01:34 PM
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#3 |
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diyAudio Member
Join Date: Jul 2007
Location: Cape Town
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Just change r19 and r7 to potentiometers.
Closest might be a 22k potentiometer. |
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