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Author Topic: 5th Gear Overdrive  (Read 11225 times)

joecool85

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5th Gear Overdrive
« on: March 25, 2006, 07:07:55 AM »
*** Old version seen below, new version here: https://www.ssguitar.com/index.php?topic=4795 ***

This is the first design I've finished.  It gives a good solid overdrive/distortion depending on how much you turn up the gain.

« Last Edit: March 19, 2020, 02:53:09 PM by joecool85 »
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leonefranca

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Re: 5th Gear Overdrive
« Reply #1 on: February 19, 2008, 07:10:08 PM »
Oh man!
Maybe it´s an idiot question...

But I didn´t understand that 22uf capacitor in R1.

n9voc

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Re: 5th Gear Overdrive
« Reply #2 on: February 19, 2008, 08:13:59 PM »
Joe, lets see if I'm right:

The 22 uF capacitor on the wiper of R1 allows you to vary the gain of the circuit while maintaining a stable DC bias.  R3 controls the overall volume, R1 the level of distortion.

(did I pass the quiz?) ::)

joecool85

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Re: 5th Gear Overdrive
« Reply #3 on: February 19, 2008, 09:40:23 PM »
Joe, lets see if I'm right:

The 22 uF capacitor on the wiper of R1 allows you to vary the gain of the circuit while maintaining a stable DC bias.  R3 controls the overall volume, R1 the level of distortion.

(did I pass the quiz?) ::)

Bingo.  I've done it without the 22uF cap and it does work but it doesn't sound the same.
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Still rockin' the Dean Markley K-20X
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casiomax

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Re: 5th Gear Overdrive
« Reply #4 on: May 01, 2008, 07:42:06 PM »
everytime i put the overdrive circuit in place, between the preamp and amp, humming noise comes out from my amp, does anybody knows why?

n9voc

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Re: 5th Gear Overdrive
« Reply #5 on: May 02, 2008, 05:06:50 AM »
Do you have the DC ground of the tonemender tied to the DC ground of the amplifier?

casiomax

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Re: 5th Gear Overdrive
« Reply #6 on: May 03, 2008, 03:26:34 AM »
I have read this somewhere that the DC ground supposed to be separated from the amp and tonemender, which mean using a different supply.

and yup, i supply the amp and tonemender and fx using a single powersupply.

joecool85

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Re: 5th Gear Overdrive
« Reply #7 on: May 03, 2008, 07:26:21 AM »
Sounds to me like ground loop oscillation or a poor solder.
Life is what you make it.
Still rockin' the Dean Markley K-20X
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