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#Pedal clones ocd mod
So since I went ahead and bought a bunch of caps, resistors, etc, I can probably do that mod to an SD-1 if I can find one. (Apparently it's like a sticker template you can use to draw out your pattern, which I was cool with, but not if I can't find the stuff.) Forget ALL that, I finally said. Or they had the kind of board you have to etch, which I would have given a shot, but they had tons of etchant and NO freaking masking materials. I guess there are specialty stores for this stuff? Like they had "Bread Board", which is LIKE veroboard, only not, really thick, likd 1/3 of an inch? And no regular switchcraft looking jacks, only these long, plastic encased things, and NO switches whatsoever. The lack of useable parts was disgusting, even at Fry's. I went ahead and bought everything on the OCD parts list that was like 99cents.
#Pedal clones ocd plus
Musicians Friend is selling the SD-1 for $40 right now, plus $6 shipping. I think maybe the SD-1 to OCD conversion is what I should try for. At least that's the impression I get, so far. The thing was though, that when you figure in the markups on some of this stuff ($13 for the enclosure, $10 for a toggle!?), it's hard to make something for cheap if you're not making a bunch of them, enough to order the parts for like 4 or 5 stompboxes from cheap online suppliers.
#Pedal clones ocd mods
Start with Brett Miller's MIJ Mod, and you may not need to do any other DS-1 mods - it's very good, and very easy! IMO, the Keeley et al mods (which are included in Brett's pdf) are all overkill, and take some good parts of the DS-1 away. The combination of transistor and op amp make the DS-1 pretty unique. Then come the clipping diodes to ground, and then comes a Big Muff style "blender" tone control (bass on one side, treble on the other). it's distorting) into a single op amp stage. It uses a bipolar transistor that is run hard (i.e. RE: DS-1 mods - no, you can't really make it into any other existing pedal design. They will have the IRF series, but I do not suggest using them. They will not have the 2N7000 transistors, or anything remotely similar. RS will have most of those parts, but not everything. The OVD parts list is complete and accurate, to the best of my knowledge. Fuller changed all sorts of stuff along the way - some were subtle, some not! People tend to create a layout for the version that they like best. There are a ton of OCD project layouts floating around out there, but they tend to be V2-V4.
![pedal clones ocd pedal clones ocd](https://d6a2e7ghqts3o.cloudfront.net/AcuCustom/Sitename/DAM/521/2020GPX9BestFulltone700.jpg)
The succinct advantage to the OVD is that it uses ALL V1 COMPONENTS. Luckily, all you need to do is "rotate" each transistor 180 degrees versus that layout, and you'll be golden. In the OVD layout above, the D and S are "joined together." It needs to be the OPPOSITE: the G and D s/b joined. Basically, G=gate, D=drain, and S=source. You should study mosFET's to understand them a little bit. It has also been brought to my attention that the 2N7000 transistors are hooked up incorrectly in the OVD layout. MarkM's stuff always has it's own component numbering system, and the components reflect a V1 OCD. The OVD layout does NOT correspond to the schematic. You might want to ease into something like this by converting a SD-1 into an OCD, as shown here and here. The truth be told, since the OCD doesn't use input or output buffers (the transistors at the input and output), a TS board will actually be more complicated than need be - you'll have to jumper or bypass those sections.
#Pedal clones ocd series
Radio Shack has the IRF series of mosFET's which are BIG, but will work if you are building on vero. The OCD uses 2N7000's, but BS170's or other types will work. The one part that probably will be hard to find in stores are the mosFET clippers. The most difficult parts are replacing the stock TS tone circuit with the OCD's clipping circuit, and then "moving" the tone control to after the 2nd op amp stage. It only took a modest amount of creativity to alter the circuit. I actually took a TS board from GGG and modified it to become an OCD.
![pedal clones ocd pedal clones ocd](https://cdn.mos.cms.futurecdn.net/kES77qQydzgHYfhnzuspYJ-1200-80.jpg)
build a 150K resistor out of a 100K and 47K in series). For the slightly nonstandard components, you can always combine parts in series or parallel to achieve the same value (i.e. If you look at the values, they are very standard. I demoed both, and any difference in sound (or noise) was negligible, IMO.Īctually, most of the components in that pedal are available at places like Radio Shack. It's really only a "reject" TL072 that has a higher noise level than is acceptable when tested.