Active guitar electronics help

[obblitt]

First: is there a more appropriate forum out there that I should ask this on?

I want to put a small circuit in my guitar's now very spacey control cavity. I'm playing humbuckers, and like the idea of coiltapping, but the actual sound of it is not ideal for me in stage situations. I want to have a pot that can dial *out* the mids while bumping the lows and highs up just a tad. Just something to use to clean up high volume chording. I want it to be really natural sounding, nothing over the top and something I can really use.

Anyone wanna help? I'm thinking one end of the pot's sweep will just be unaltered guitar, and the effect will come in nice and smooth as I turn the pot up/down (), no on/off switch or anything.

Thanks!

[petemoore]

I'm thinking one end of the pot's sweep will just be unaltered guitar, and the effect will come in nice and smooth as I turn the pot up/down (), no on/off switch or anything.
  I recommended the notch filter in the Superfuzz with the mod Mark Hammer found [replace sw with a 10k? pot].
  Then I erased the post..but the notch filter can be adjusted and is a good starting point for mid-scooping.
  I couldn't find the schematic but this is a good place to start to get an idea of the 'minimum' of what else you'd need.
  http://www.aronnelson.com/gallery/main.php/v/Toneys-Album/Buff_n_Blend.png.html
  I always recommend read GEO, see all the articles and RG's 'Parallelyzer'.
  Moosapotamus's paralooper is an option.
  You'll probably want to overcome the passive losses involved with the filtering with some kind of boost which may make the filter work better if it's placed after the 'wimpy' coil output.
  Once you boost that 'side', the plain coil will be a different [probably higher] impedance...
  Then there's the mixing...
  At any rate there are some options and reads to help you decide what you want to try...deciding how many active stages or features you want to add/keep.
  Getting the volume to remain the same across the full mix pot sweep might be a challenge or a compromise.
  Count the # of active stages as they add up and consider current consumption /needs.
   

[Gus]

google etc for active bass circuits.  Some have 3 band EQ and three controls.  You could build one of the bass circuits and then adjust the mids and high and lows if needed.   Note a famous tube bass preamp is based on a fender guitar amp preamp section so don't get stuck thinking a circuit with bass in its name it is only a bass circuit it might be and it might work well with guitar.  Also look for the fender EC preamp schematic this might be something to try, there was a hand drawn one on the web in the past.  If I find the link I will post it

[Ben N]

You want something like the EMG-EXG, I take it. I don't know how that works, although I guess it is something like Gus suggests, a single control that boosts bass & treble simultaneously. You could also try an inductor-based notch filter with an opamp or jfet recovery stage.

[oldrocker]

I recently added Jack O.'s simple Jfet buffer to my Flying V.  I could add another effect since there seems to be alot of room in this guitar cavity.  On the outside is a toggle and green LED indicator.

[Ben N]

If you can get a hold of the schematic, Craig Anderton's Clarifier (a GP article about 25 years ago) with a dual-ganged pot might get you there pretty simply. It was, IIRC, something like a baxendahll tone stack in the feedback loop of a non-inverting single opamp stage.

[obblitt]

What about this: http://www.aronnelson.com/gallery/main.php/v/Roobins-Album/DIY-Layouts/Orange_TB_Strip.gif.html