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PostPosted: Fri Oct 23, 2009 7:49 pm 
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Hey all,

I love this circuit! I built the mosfet boost and stuck with the standard overdrive with mofset clipping. I'm keen on installing this flipper-switch to make the pedal even more versatile, but am puzzled as to where a good location would be for the toggle?

Does anyone have a good suggestion? I feel it would be too close to the board if I installed it on the face of the pedal, but the sides seem like a bad place as well. I could remove the base-nut from the pole of the toggle to squeeze and extra mm or so of space between the bottom of it and the board, but I'm afraid it would cause problems. Could I just put a piece of electrical tape over the solder-poles?

Thanks in advance,

Preston


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PostPosted: Sat Oct 24, 2009 10:14 am 
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Location: Portland, OR, USA
pedmands wrote:
I'm keen on installing this flipper-switch to make the pedal even more versatile, but am puzzled as to where a good location would be for the toggle?


here's a pic from DVM's site, he built one with the toggle built in, but it looks like it may be pretty tight in there. He'd probably be able to give you more info.

Image

another idea is to always use a PSU and mount the switch on the one of the sides of the pedal where the battery is should go (you would no longer be able to operate on battery power)

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PostPosted: Sat Oct 24, 2009 11:32 am 
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Yes, as wmarshguitarist showed, I mount a miniature 3PDT toggle switch between the bottom of the board and the top of the enclosure, just below the clipping toggle switch, with the toggle bat coming out through the left side of the enclosure. The switch must be mounted so that its most narrow dimension fits into that space. Consequently, the toggle bat moves vertically, in the same plane of motion as the footswitches. See below pics for details. This should be drilled & fitted before the PCB is soldered to the pot legs and toggle switch lugs, to be sure you have enough room. It's important to drill that side hole such that the switch body is flush against the inside of the top surface of the enclosure, to use as little of that vertical space as possible, so measure & drill carefully! I then cover the solder side of the board in that immediate area with a piece of electrical tape, even though the side of the 3PDT toggle body is plastic with very little exposed metal. Better to be cautious, I figure.

One other thing--because the side of the enclosure is not perfectly perpendicular to the top, when you tighten up the mounting nut on the 3PDT toggle switch, it lifts the back edge of the switch body up a bit and eats up more of the precious vertical space that you have there. To keep this from happening, I take a small washer (generally one of the washers from one of the two top-mounted toggles, since I don't use them) and cut it in half, and then wedge it in between the 3PDT switch body and the inside of the enclosure on the side of the threaded bushing facing away from the enclosure top. That way, when you tighten the mounting nut, the piece of washer forces the switch body to lie flat against the inside of the enclosure top and not lift up at the rear.

May sound a bit complicated, but I've done it many times now, and this mounting method works very well. And it preserves the battery compartment.

Here are the photos I mentioned:

Image


Attachments:
toggle_fit.jpg
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toggle_fit_bottom.jpg
toggle_fit_bottom.jpg [ 75.28 KiB | Viewed 25657 times ]

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PostPosted: Sat Oct 24, 2009 1:13 pm 
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Thanks for the help, guys!

Unfortunately I've already soldered the PCB onto the pots & switches, so it looks like I won't be including the switch on this build. Very useful information for next time though, and great looking work!


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PostPosted: Sat Oct 24, 2009 1:44 pm 
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You can still use the battery cavity, if you don't need to power it by battery.

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PostPosted: Wed Nov 11, 2009 10:42 pm 
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Tonka wrote:
I just finished the OD2 build with pre/ post boost switch and pedal is not working. I think that I got everything right but I don't think that the orientation of the pre/ post switch is clear. It can go two ways. The way it is put physically in the case will rule what the pin numbers on the switch are. How do I know what is pin one? Which way does the lever throw in the diagram... left to right , or up and down? Thanks I really don't want to re-wire that switch!


The lug numbering on a 3PDT is like this...

Image

Hope this helps...

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PostPosted: Tue May 04, 2010 5:08 pm 
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Location: Sacramento, CA area
Well, I just finished my first OD2, built as a hybrid, w/ mosfet input buffer, silicon boost, mosfet and silicon clipping, and silicon output buffer and wired up to put the boost into the OD section and I'm *very* impressed. It is a great sounding pedal, flexible and very configurable, and sounds as good (or better) than boutique pedals costing hundreds more. I did bump the boost by upping the 10K resistor to 15K (see above), and I did drop the loudness pot down to control the feedback (boy, does this sucker get over the top!! <G>). The boost is a little too dark in my limited testing at this point, but I'm going to play awhile before I condsider converting the boost to mosfet.

Great pedal!! Thanks for all the help on here, advice and mod info. I couldn't have done the hybrid and boost->OD mods w/o the direction and guidance provided here.

BTW, <G>, a first try build too! No glitches, roadblocks or mistakes (yet!) and it fired up on first try!

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PostPosted: Sat Jul 03, 2010 10:16 pm 
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This question may sound a little silly, but since the od and the boost are independent, would it make any sense at all to have an extra pair of jacks?
If you consider that if you have separate inputs and outputs, you can choose where to place the boost in your pedal chain, an not just directly before or after the od.
Actually, in a multichannel amplifier situation, I find it very useful to put the boost in the fx loop. Since this is a clean boost (meaning that it won't compress, distort or otherwise alter the eq significantly, it will only add clean gain to the signal), putting it between the preamp section and the power amp, you will have a "Master B" option for every channel passing through it.
If all the amp's channels are set to the same volume, it's like having a solo option, because it will raise the volume to the same amount for every channel, instead of raising volume in the clean channels and overdriving without any significant change in volume the already saturated (dirty) ones by placing the boost before the preamp section.
I figure that this alteration poses some minor ground, dc supply and impedance issues, not to mention the enclosure would necessarily have to be larger, but i consider it a bonus, since I have to play, sing and deal with all the footwork all at once, and it's not that difficult to hit both footswitches by accident, instead of just one.
I was introduced to b.y.o.c. by one of the guitar players I usually play with last Friday, and was curious to learn about your products, so I'm not a costumer (not yet, anyway), but I'd like to know if it's possible to order the overdrive with these modifications, and how much would it cost.
Congrats, by the way, on selling what seems to be a very versatile and great sounding od. Don't own one yet, but I guess it won't be for long.


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PostPosted: Sun Jul 04, 2010 2:00 pm 
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slappy wrote:
Stupid noob question. Will it affect the boost's tone if the o.d. isn't engaged?

No--the beauty of true bypass pedals!

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PostPosted: Fri Oct 15, 2010 2:51 pm 
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Location: Wales, UK
Many thanks duhvoodooman for posting this mod. Just done it to my OD pedal and it sounds so much better plus it is more versatile to use. Should be the standard way to wire it I think. While I had the pedal open I swapped out the JRC for the BB OPA chip which to me sounds better too.

Cheers

Roger


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PostPosted: Fri Oct 15, 2010 3:18 pm 
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Glad to hear you're digging it. I think it really adds a lot to the OD2's flexibility & usefulness.

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PostPosted: Wed Jan 05, 2011 3:07 pm 
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Location: Winnipeg Canada
This is a great idea that i'll build into my od2 , so
when i make pedals for others they can try this
to decide , Thanks for all the clever !


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PostPosted: Sat Sep 03, 2011 8:48 pm 
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duhvoodooman wrote:
Actually, the noise suppressor I'm familar with, the Boss NS-2, uses a loop that you place your noisy pedals in, basically like so:

guitar --> NS-2 in --> NS-2 loop send --> gain pedals --> NS-2 loop return --> NS-2 out --> other pedals --> amp

You can also have "early in the chan" effects between the guitar and the NS-2, like a wah or a compressor.



Duhvoodooman, this brings up a question I've been wondering about for a while, and I'm guessing you'd know the answer: Doesn't putting the overdrive (and/or other distortion type effects) in the effects loop of such a pedal mean that you're sending a buffered signal to the overdrive? I often hear others say that it's "best" to put the overdrives first in the chain before any buffering.

Reason I ask is that I have a GT-8 which I use for time-based effects (and which I think does a pretty good job at these things) and usually run my overdrives in the effects loop. I've wondered if having them there is taking away some of the magic those pedals might add, not just because of the buffered input to the overdrive, but also because any signal boost that the overdrive might be sending down the chain is being tamed by the effect return into the multi-effect. For most of my purposes this setup has worked just fine. However, I'm wondering if I'm losing something by doing it this way.

I'm new around here, and have my first BYOC kits arriving in the mail in a day or two . . . including the OD2. Can't wait!

Thanks,
Justin

P. S. Wasn't sure if this might be worthy of a new thread. Sorry if it seems a bit off-topic.

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PostPosted: Wed Mar 13, 2013 4:52 am 
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wmarshguitarist wrote:
I just implemented this mod, and it sounds GREAT! I can't wait to try it out on Saturday. This is the way the pedal should come in the first place!


+1

Hot damn what an awesome mod. I haven't built my OD2 yet but I thought that it came with the boost before overdrive. Definitely agree thats the way it should be.


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PostPosted: Thu Sep 24, 2015 1:52 pm 
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I'm about to build my first pedal (ESV Fuzz), then plan to tackle the OD2. I'm definitely doing this mod, but have a question about how it will interact with the clipping stage. I assume if I push the boost, it would then push the input of the clipping stage more right? If so, that would seem to solve the problem many people have brought up about the LEDs not engaging, and therefore sounding the same as "lift" mode.

If my (novice) thoughts are right about all of that, once the LEDs can be pushed, any thoughts on tone differences between the LED and MOSFET clipping?

Thanks to all for the great support community here!


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PostPosted: Thu Sep 24, 2015 6:19 pm 
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Yep, you're right. I don't know the exact effect on the LEDs but it will typically increase the distortion on the front end. Be a great excuse to build a boost and just throw it in the chain first.

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PostPosted: Thu Sep 24, 2015 8:44 pm 
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The LED's will be noticeably louder--due to their higher forward voltage threshold, they clip less signal--and they have a more sharply defined, less compressed tone. Their character is often referred to as "Marshall-like", and while I think that's a bit of a stretch, I can understand why the comparison arises.

If you want to try a couple of different clippers there, try socketing both the LED and MOSFET clipper positions with inline sockets like these: http://buildyourownclone.com/products/socketsil64 Just cut off two or three at a time and solder them to the PCB eyelets, and you can go nuts trying different diode types and combinations.

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PostPosted: Thu Sep 24, 2015 10:07 pm 
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Thanks for the quick replies on a long dead thread!

The LEDs may not be the sound I'm going for based on your description voodo -- even if I can get them more engaged using this mod. That being said, I'm experimenting a lot with my sound, so I love the idea of installing sockets! I'm doing that for sure. Thanks again!


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PostPosted: Fri Sep 15, 2017 3:08 am 
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The thread that keeps on giving!
Just wanted to say thanks for posting this simple mod. I'm not a big fan of boost after overdrive so this mod put my old OD2 back on the pedalboard! :)


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