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Old 3rd October 2007, 10:19 PM   #1
back is offline back  Greece
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Join Date: Nov 2005
Location: crete
Default input values?

hello.

i want to calculate the values of rc at a jrc 4580.

now i have 20uf for dc blocking in series and 47k input resistance and causes bass roll off at about 50 hz.

i know that if i increase c it will go down but what about R.

if i decrease it roll off will go lower?

how do i calculate?
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Old 3rd October 2007, 10:26 PM   #2
Minion is offline Minion  Canada
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Join Date: May 2006
Location: Cowican Bay , vancouver island
here is a filter calculator for calculateing resistor and Capacitor values for filters....

http://www-k.ext.ti.com/srvs/cgi-bin...obj(32622),new

try here also

http://www.muzique.com/schem/filter.htm


Cheers
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