Had an idea

[obblitt]

I'm fairly new to electronics and all this jazz, and thought of a somewhat simple (I think) project to get my self a little more familiar with the basics.

I don't know technical terms so try and bear with me..

I'm wondering what kind of components go into an EQ section of an amp.. Specifically the mid and treble section. Like if they're chips or some kinda something.

My idea was a simple stomp box for middle and treble boost (a 2 in 1!), I thought of having a rotary switch (don't know if a 2 way exists) for selecting which frequency to adjust and having it wired to whatever goes into middle and treble section stuff and then wired to a pot with a center detent for cutting or boosting what ever is selected.. and having a cool Blue LED and a Green LED side by side for which frequency I'm on..

Wondering if it's possible to fit all that in a stomp box

[petemoore]

  yup.
  Simple 1 transistor booster using...any active stage can make a real mid-treble boost or even make the bass cut enough to 'seem' like a mid-or treble boost.
  An Eq pedal is a nice thing [and cheep for the troubles it'd be to make] and tells what frequencies are better than any descriptions can, and let you try them out !
  Volume aside [for discussing frequencies], frequencies are all about amounts relative to other amounts. Cut bass and what is left...mids and treble...boost that and what is it but a mid-treble booster.
  See LPB's...there are a batch of them which use a transistor and a 'topology' [basically the same exact circuit, with a component value altered here and there, provides boost to 'chosen' frequencies...Screaming Bird being 'thin' [lots of bass cut] and the Hogs foot being 'fat' [bass allowed in and out], using the same amplifier and bias values.
  To 'add' volume to a certain frequency band, LP or HP [or both lowpass and highpass] filters can be used to reduce chosen frequencies, and an amplifier boosts. If what is left to boost is mids [because LP and HP filters have cut bass and treble] it's then that it can be 'called' a mids-booster.
  Other than whipping up and debugging then modding a booster, reading and comprehending what capacitors 'do' [they block DC. ..and pass with decreasing resistance, AC signals of increasing frequency.
  A HP filter can be a capacitor with AC frequencies run through it, the capacitor value small enough to reduce volume in the form of lower frequency content of the signal.
  A LP filter uses the cap in a similar way, except the high frequencies it still passes are then 'shunted' to ground [the other end of the cap from signal path dumps the higher frequencies to ground...and the signal goes on it's way from there [after some treble = higher frequency content was just dumped off] to the output...or next stage in the circuit ..lowpass filter