First Breadboard experience (LPB-1) Question?

Started by pappasmurfsharem, January 24, 2013, 04:39:59 PM

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pappasmurfsharem

I just got my first breadboard. WOOOO! :icon_mrgreen:


I figured I would try something simple like the LPB-1
It's not on the breadboard anymore as I had to dismantle it because my 8 month old likes to basically eat anything..... anyyyything... and she magically finds things so just to be safe ya know..

As I've never used an LPB-1 I didn't really know what to expect but there was a hint of distortion at most settings past 1/4 turn. I mean very faint unless pegging the 100k pot then it was like a extremely light fuzz.

I was testing on my VOX VT30 which isn't the best amp for testing pedals, but I did not have a similar issue with the MXR Microamp build.'

I used the exact values on Dano's schematic.

Is what I experience inherent of the LPB-1 or would it be the digital amp I'm using?  It wasn't like an intense distortion just a light fizz (which my idea of fizz and yours may differ) if you want to call it that.

I don't really intend to box one up as I enjoy the microamp build but just for my own sanity I'm curious.

I can say that the breadboarded layout was 100% correct, I tried two 2N5088's , didn't feel the need to test more after that.

I used the schematic here..

http://www.beavisaudio.com/schematics/Electro-Harmonix-LPB-1-Schematic.htm
"I want to build a delay, but I don't have the time."

garcho

QuoteI just got my first breadboard. WOOOO!

Congrats and bravo! I love breadboarding crap!

QuoteIs what I experience inherent of the LPB-1 or would it be the digital amp I'm using?

It could be your digital amp bringing out the non-clean-ness of the LPB. Try breadboarding Jack Orman's MOSFET clean boost over at AMZ. It's a very clean boost. If that sounds 'fuzzy', it's your amp.
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pappasmurfsharem

#2
would there be any benefit for both outputs?  or rather what can I exclude  to only use one output?  do I just cut everything below the transistor out?
never mind found it,  just exclude C6  and the next output stage
"I want to build a delay, but I don't have the time."