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Old 21st July 2007, 11:19 PM   #1
Amagic is offline Amagic  United Kingdom
diyAudio Member
 
Join Date: Jul 2007
Default tone control formulas

Hi in regards to the circuits attacted what formulas are used to calulate the gain at certain frequecies, i understand when you take out the capacitor gain= R2/R1

But with the capacitor back in doe's the formulas change, is there a way of working out the gain if for example 500Hz was inputted

Many Thanks

PS for all the previous help
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