LowPass Filter for Audio

Discussion in 'The Projects Forum' started by mxabeles, May 2, 2009.

  1. mxabeles

    Thread Starter Active Member

    Apr 25, 2009
    182
    0
    Hello
    I tried making a cheap lowpass filter for a 555timer synth last night and it failed, ruining my chip.
    I tried hooking up a 47uf capacitor (in series, not sure if that was right or not) with the 100uf capacitor going from output of timer to audio out.

    I then put a 100k pot in parallel with 47uf cap, think it would change the cutoff. Well, I must be missing something.
    Any suggestions for newb?

    At somepoint I want this to be an active filter with resonance but for now I just want make the shit one.
     
  2. bertus

    Administrator

    Apr 5, 2008
    15,638
    2,343
    Hello,

    Can you make a drawing of what you tried to do and post it?
    Is the lowpass filter intended to fit between the 555 and the audio amplifier?

    Greetings,
    Bertus
     
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