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Old 12th February 2001, 12:52 PM   #1
nlinus is offline nlinus  Sweden
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I'm building a simple audio mono amplifier (with good data though) and want to know what's the best way of making a volume control. Shall I use an OP-amp or can I just use a simple pot (what values)?

I want it to be cheap and good. Please help me!
One of my other projects: Svarthålet Racing
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Old 13th February 2001, 03:47 AM   #2
Lisandro_P is offline Lisandro_P  Argentina
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You can use a pot to attenuate the input (most amps have volume controls that work that way). By the way, www.sound.au.com had a nice article on volume controls, and how to wire a linear pot to achieve a better logarithmic response.
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Old 14th February 2001, 11:26 PM   #3
promitheus is offline promitheus  Europe
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A simple pot in the input is enough in most cases.
22k- 100k ohm is normal.
Most prefered 47 k for standard.
You only need to have a preamp with low output impendance.
If the input has a capacitor for coupling concider putting the cap. before the pot.
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