Pot substitution on Stratoblaster vero layout

[boedonaldson]

I am up to th last part of this project which is the pot. I have 100k-A pots lying around but no B pots. Would it be fine to substitute this pot for the 100k-B, or maybe a 50k-b pot which i have. What effect would each one have? Cheers

[rockgardenlove]

It will work, but the sweet might be a bit wierd.

[markm]

Being that it is a level control,
I'm leaning toward the idea that an Audio pot may be the way to go anyway.
Let us know how it sounds, I've been thinking of tinkering with that circuit a bit.
  MarkM

[boedonaldson]

In using an audio pot, would i wire it the same or if not how would i and what lugs would i use?

[markm]

Same as shown in the layout.

[boedonaldson]

After wiring the audio pot, the circuit just acted as a volume control, no boost or nothing. If you put the FET in the wrong way the first time can it blow up?

[markm]

 
Well, then I'd say it works.
That's what it's s'posed to do.
Congratulations!

[boedonaldson]

No i dont think it does work cause there is no boost in the sound at all as it is meant to be a booster isnt it?

[wampcat1]

No i dont think it does work cause there is no boost in the sound at all as it is meant to be a booster isnt it?

Well, the pot *IS* controlling the volume, so that is indeed working. Are you saying that with the volume up all the way there is no change in signal level when bypassed compared to when on?

bw

[boedonaldson]

Yep thats it, no noticable signal change. I must note that i changed the 1.5uf electro cap for a 1uf but this shouldnt do much. I built sio many pedals but ive only managed to succeed with a TB Loop/Tuner mute. This is starting to become very discouraging.

[wampcat1]

Yep thats it, no noticable signal change. I must note that i changed the 1.5uf electro cap for a 1uf but this shouldnt do much. I built sio many pedals but ive only managed to succeed with a TB Loop/Tuner mute. This is starting to become very discouraging.

Do you have a breadboard? I would first do some building with that -- much much easier than vero'ing a ton of stuff when learning.

I'm looking at this schem:
http://www.generalguitargadgets.com/diagrams/asb_sc_i.gif

See c1? You might put a 47uf there instead, it may give a bit more output. The 1uf instead of 1.5uf at the output won't make much of a difference.
Also, just for giggles, get rid of that pot at r4 (just use a jumper to connect the elec. cap to the jfet). Move the pot to where the 22k resistor is (r2). Then, as you strum your guitar, turn the trim pot a little bit until it is at it's loudest point.

Another idea for a first build is an easy 386 circuit. Look in Dragonfly's fuzz folder for it ( http://www.aronnelson.com/gallery/ ) It is quite a bit easier and nearly impossible to not get working.

Hope that helps!

bw