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telemike
Copper Member
47 Posts |
 Posted - 01/11/2006 : 12:30:56
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Simplify, Simplify, Simplify!
Well maybe one ?simplify? would have done as a famous thinker had once responded. This article will give you a couple tips that you can apply to the BOSS OD-3 and then extrapolate to other effects pedals or even amps. Some mods are very simple, you just remove parts. Most players know that you can remove V1 from some amps and get a little more volume or gain from the amp. Some mods have been talked about for the Big Muff in which you just take our parts.
Here are more 3 mods that simplify, simplify, simplify by taking out our ?shorting? out parts.
The first mod is to remove D6 and D7. You can put them on a switch to toggle this on and off but I think a quick listen will convince you that those can go. These two diodes give a very slight increase in distortion but when removed give you a much livelier and open sound. The reduced gain you'll have is so slight that I think it would only offend those that run this pedal gained to maximum.
The next mod will make those folks happy!
How about ?shorting-out? a whole slew of parts? This one removes a modified Twin T filter and a set of clipping diodes. By removing the signal loss in the circuit however we push the drive circuit harder producing more distortion. In this mod you attach a wire from the negative side of C30 to the gate, or center leg, of Q13. People experimenting with different FET possibilities for sound quality should really check out this Toshiba 2SK184, it?s a great sounding device for guitar work.
The next mod is a simple one as well (catching on to the theme yet?). Remove R14 or put it on a toggle switch. The distortion level increases by a large amount. Not quite your cup of tea? Do you have some oscillations? Well, reduce instead of removing it. Change the resistor value to somewhere between 2.2K and 4.7K. You get about the same effect and the unit will be a bit more stable.
Have fun simplifying yourself and your circuits!
Robert Keeley Electronics, Inc. Email: fx@rkfx.com Web: www.robertkeeley.com
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boss freak
Gold Member
USA
663 Posts |
Posted - 01/11/2006 : 19:25:18
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Thanks for posting that! I'm going to have to give it a try!  |
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telemike
Copper Member
47 Posts |
Posted - 01/24/2006 : 16:22:32
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| Anyone tried yet? |
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telemike
Copper Member
47 Posts |
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VH100R
Copper Member
Portugal
37 Posts |
Posted - 01/25/2006 : 20:14:38
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Instead of removing R14 I think you can just solder a jumper wire to the terminals of the resistor. That will bypass the resistor and if someone doesn't like the mod simply can remove the wire again...
If anyone tryed these mods post here because I don't have the OD3 at home right now and would like to know about the changes. |
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svengali
Bronze Member
Australia
111 Posts |
Posted - 03/17/2006 : 03:58:29
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hello,
i just tried the removal of d6 and d7 on my od3 pedal.
outstanding results. took all of three minutes.
just lifted one side of diodes up, cranked it up and yeah, much much better.
the od 3 pedal has a thick sound to my ears, a little cluttered actually, and this fixes it.
thanks for the tip.
svengali |
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VH100R
Copper Member
Portugal
37 Posts |
Posted - 03/18/2006 : 02:07:30
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quote:
Originally posted by svengali
hello,
i just tried the removal of d6 and d7 on my od3 pedal.
outstanding results. took all of three minutes.
just lifted one side of diodes up, cranked it up and yeah, much much better.
the od 3 pedal has a thick sound to my ears, a little cluttered actually, and this fixes it.
thanks for the tip.
svengali
thanks! I will try that on mine. |
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telemike
Copper Member
47 Posts |
Posted - 03/20/2006 : 21:30:09
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I am so close to clipping those diodes........
I don't want to lose the cranked tube overdrive at the higher gain settings.
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svengali
Bronze Member
Australia
111 Posts |
Posted - 03/20/2006 : 22:16:47
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if you want to try this mod, just get a small flat screwdriver and kind of try to push it under the diode as you melt the solder on the other side. the diode will cleanly pop out at one end.
if you decide that you dont like it, it will be even easier to make it standard again.
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chris101
Copper Member
United Kingdom
3 Posts |
Posted - 01/11/2009 : 12:01:40
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One small problem with removing D6 and D7 is that when the pedal is used on very low gain settings, the natural note decay is very much broken up and 'splatty' as if the pedal is switching a certain amount of distortion on and off as the signal fades, kind of like some threshold is not quite being met. Try changing the opamp for the NE5532, or get 2 and stack them, that works well (dont use the OPA2134 Burr Brown as these sound terrible in this pedal, loads of fizzy artifacts on note decay). D9 and D12 removal and lowering C31 (or just do the jumper mod as described in the original post) works very well, adding clarity to the effect, even at super low gain settings.
Thanks,
Chris |
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Dr. Bob
Moderator
Australia
6593 Posts |
Posted - 01/12/2009 : 16:48:29
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Hi chris101
Welcome to the forum from Australia.
Regards Dr. Bob |
Edited by - Dr. Bob on 02/05/2009 17:13:54 |
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petmar
Copper Member
Sweden
4 Posts |
Posted - 02/05/2009 : 16:22:41
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Hi! First time here.
I've read about the mods here and tried the third one where you
remove R14 but the sound just gets very thin and from what I can hear
no increas in gain.
Anyone who knows anything about this?
I bought the pedal 2008,maybe something have changed since the first post?
Best from Peter |
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Dr. Bob
Moderator
Australia
6593 Posts |
Posted - 02/05/2009 : 17:07:25
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Hi petmar
Welcome to the forum from Australia.
Just a quick heads up.
Can you please check your myspace link in your profile.
It doesn't see to work, unless there a server glitch from my end.
Regards Dr. Bob |
Edited by - Dr. Bob on 02/05/2009 17:14:26 |
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petmar
Copper Member
Sweden
4 Posts |
Posted - 02/05/2009 : 18:08:10
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I guess I forgot the www
Peter |
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Topic |
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Robert Keeley OD-3 DIY Mods
