"ChipDrive Overdrive" LM386 knobless overdrive

Started by Earthscum, February 04, 2012, 12:32:35 AM

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Earthscum

So, I was screwing around with this and figured something out... this thing will send a distortion that you thought was stellar straight into outer space.  :icon_twisted: Straight signal, it sounds (like I said before) like clean signal mixed with distortion (crossover distortion?). However, the signal is fat, so it doesn't get louder, that you notice much by ear, but it has more wallop to it.

I put it in front of my BMP and I think I caused electronic rain between the ionospheres. Rob, if you read this, you gotta try this out on front of a Spitfire! See if you can take out some satellites or cause a new crater on the moon.  :icon_biggrin:
Give a man Fuzz, and he'll jam for a day... teach a man how to make a Fuzz and he'll never jam again!

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deadastronaut

 :icon_cool: sounds good to me....i'll give it a whirl..... i'll have a float around in space for a bit first ....hold on... i just bumped into a little russian dog.......she don't look good....beep hisssssssss.

she's gone a bit crispy round the edges...over...hissssssssssss beep..... ;)
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Perrow

Quote from: deadastronaut on March 21, 2012, 08:19:11 PM
:icon_cool: sounds good to me....i'll give it a whirl..... i'll have a float around in space for a bit first ....hold on... i just bumped into a little russian dog.......she don't look good....beep hisssssssss.

she's gone a bit crispy round the edges...over...hissssssssssss beep..... ;)

Try to make a hot dog ;)
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mayoayox


mayoayox

Quote from: Earthscum on February 04, 2012, 12:32:35 AMJust when you thought it had all been covered...

This sounds great on bass. Maybe could benefit from a boost for guitar. I tried taking a pic of the o-scope, but I gave up, lol. Suffice to say, this is a true overdrive, in the sense of part of the original signal gets mixed in with the distorted signal, creating basically trapezoidal waves with domed peaks instead of flat. The corners are still sharp, giving a nice fuzz.



BIG NOTE: No, I didn't mess up the schem. The output really is taken off of pin 1!

You can add a switch to switch in and out the 10uF cap for a "clean" with a bit of distortion on hard picks (or some resistance or gain flavoring), and full gain WITHOUT having to compensate with a volume knob... awesome, huh?
  ;D
Quote from: karter2000 on February 04, 2012, 11:26:36 PMI just breadboarded the Simple ChipDrive as above, and tried it with my bass.  It sounds great IMHO, as a bass overdrive!  I'll have to play around with this one further.

do you have this schematic still? I'm lookin at the lm386 pinout and guessing at what it could've been, but @earthscum isn't active anymore.

mayoayox

Quote from: Earthscum on February 04, 2012, 09:47:57 PMHere's a super simple, stripped down version. Doesn't sound any different.  :icon_biggrin:



want. too bad image shack is dead