tag:blogger.com,1999:blog-6847048658257278783.post6248453555034607446..comments2024-03-29T01:36:12.851+00:00Comments on Guitar FX Layouts: Effdub Flapjack ODIvIarkhttp://www.blogger.com/profile/08416945174853142251noreply@blogger.comBlogger17125tag:blogger.com,1999:blog-6847048658257278783.post-47494380618814515062021-01-18T21:11:37.138+00:002021-01-18T21:11:37.138+00:00on a different version I had oscillation with the ...on a different version I had oscillation with the 071 but not a OP07TedShttps://www.blogger.com/profile/02568218407570938413noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-46062347347405985662017-11-06T20:59:39.734+00:002017-11-06T20:59:39.734+00:00I had oscillation with an 071 but not with a 741
I had oscillation with an 071 but not with a 741<br />Anonymoushttps://www.blogger.com/profile/17192453919059323172noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-76960352324356876992016-11-04T04:46:26.555+00:002016-11-04T04:46:26.555+00:00I built it anyway and it seems to work. This thing...I built it anyway and it seems to work. This thing sounds pimp on my humbucker equipped guitar.Anonymoushttps://www.blogger.com/profile/05154476491671812734noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-27065782694527229352016-11-03T00:03:25.933+00:002016-11-03T00:03:25.933+00:00Would a 1N5819 work instead of 1N5817?Would a 1N5819 work instead of 1N5817?Anonymoushttps://www.blogger.com/profile/05154476491671812734noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-67993513052829237762015-03-27T19:01:02.309+00:002015-03-27T19:01:02.309+00:00Hello,
I 'm doing mounting on bench éssai and ...Hello,<br />I 'm doing mounting on bench éssai and me go from 220 ohms to 470 ohms gives very little difference.momopogohttps://www.blogger.com/profile/08759266621799422527noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-6570664032226845912014-09-26T02:53:54.203+01:002014-09-26T02:53:54.203+01:00If you're looking for a quickie, this should d...If you're looking for a quickie, this should do the trick. <br /><br />Put it together in one sitting, although I already had the drilled enclosure. Nice addition to my 741 collection. <br /><br /> https://lh4.googleusercontent.com/-JwY8BbwXxPM/VCTCk0xQ_hI/AAAAAAAAAQg/KcfCOwDGjww/w346-h642/2014-09-25.jpg<br /><br /> https://lh4.googleusercontent.com/-_bb9z2a_G8s/VCTC6ISPBvI/AAAAAAAAAQc/ZZlMzHuKnks/w346-h649/2014-09-25.jpg<br /><br />May make a triple 741 pedal with my Flapjack, Wampler Modified Distorion+ and DOD250 in a single 1590xx. Then reuse the 3 125Bs for something else. MAOhttps://www.blogger.com/profile/16009444316767677263noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-33224277966598478012014-09-20T21:25:47.226+01:002014-09-20T21:25:47.226+01:00Hi everyone, at first, thank you Mirosol for publi...Hi everyone, at first, thank you Mirosol for publishing that project. I built this pedal in substitute the Hotcake and I used the 8.2V zener diode instead 1N5817, worked great. Maybe later, I'll put a switch to select between 220 Ohm resistor and 470 Ohm, I liked the fuzzy way and the "normal" too, so why not have both? Giovane Soavehttps://www.blogger.com/profile/02284406158137465762noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-37151928453287286012014-09-02T13:15:49.053+01:002014-09-02T13:15:49.053+01:00I always socket my transistors and ICs to avoid da...I always socket my transistors and ICs to avoid damaging them in the build process. I'll try out some different ICs for sound quality (I have a bunch of single op amp chips).<br /><br />By the way, you can reduce the max gain a little (if it's too fuzzy for you) by changing the 220 ohm resistor on the left side to 470 ohm. I'll probably leave mine as is.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-15819089800596614332014-09-02T06:41:15.646+01:002014-09-02T06:41:15.646+01:00Usually opamp clipping sound does depend greatly o...Usually opamp clipping sound does depend greatly on the opamp used. I suppose 741 clips a lot more gracefully when compared to TL071. One could of course socket the IC and try on various single opamps (NE5534, TL0*1, etc.). Any opamp with the same pinout should work.<br />+mmirosolhttps://www.blogger.com/profile/02400327798106357876noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-45328000247720007182014-09-01T23:59:45.153+01:002014-09-01T23:59:45.153+01:00Yes, the LM741 is the one to use, and is available...Yes, the LM741 is the one to use, and is available in the states at good ol' Radio Shack :)<br /><br />I should note that this circuit makes use of op amp clipping - no diodes in either the op amp feedback loop or after the op amp output. It sounds good too, and I wonder if this has to do with the LM741 itself.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-34816563854919028662014-09-01T20:25:41.214+01:002014-09-01T20:25:41.214+01:00Hmm.. You'd need a compensation cap between pi...Hmm.. You'd need a compensation cap between pins 1 & 8.<br />+mmirosolhttps://www.blogger.com/profile/02400327798106357876noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-54662692761814539632014-09-01T14:28:19.988+01:002014-09-01T14:28:19.988+01:00This circuit asks for an lm308.This circuit asks for an lm308.Anonymoushttps://www.blogger.com/profile/09241895905969267761noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-52335950649290431092014-09-01T08:08:27.136+01:002014-09-01T08:08:27.136+01:00Now that was fast! Cheers Frank! I'll tag it r...Now that was fast! Cheers Frank! I'll tag it right away.<br />+mmirosolhttps://www.blogger.com/profile/02400327798106357876noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-72552086135112834612014-09-01T08:07:05.426+01:002014-09-01T08:07:05.426+01:00Cheers boratto. It was already morning hours and i...Cheers boratto. It was already morning hours and i just simply didn't eve look for one. Embedded this to the post.<br />+mmirosolhttps://www.blogger.com/profile/02400327798106357876noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-64891402043963066552014-09-01T06:33:58.868+01:002014-09-01T06:33:58.868+01:00So I was minding my own business on a Sunday night...So I was minding my own business on a Sunday night when this great OD circuit shows up on tagboardeffects! I knew I just HAD to build it, so...I started at 10 PM and finished my final tests at 1 AM. The vero layout works great, so you can tag this one (it even fired up for me the first time with no debugging :). I didn't have two C50K pots so I used a B50K temporarily for the volume, which works fine.<br /><br />In my tests, the Flapjack sounded much better than I had expected, given such a simple circuit. The Crowther Hotcake had been on my radar for a while, so this gave me an excuse to try out this type of LM741-based OD. It can go from a cleanish boost to massive (almost fuzzy) gain, and the presence does a nice job of adding back some treble especially at low gain. And no squealing at any gain or volume setting! It seems to get the massive gain towards the very end of the gain pot rotation, but that didn't bother me (you can potentially play around with the gain pot arrangement if you prefer different sweep).<br /><br />Anyways, thanks for the layout Mirosol!Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-41988952069673849182014-09-01T02:44:55.381+01:002014-09-01T02:44:55.381+01:00i just checked out the video. sounds great. defini...i just checked out the video. sounds great. definitely similar sounding to the hotcake, but there's something different, it can't put my finger on it, but i definitely dig this one.Zachhttps://www.blogger.com/profile/00044917566185720896noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-13299840849226535882014-09-01T00:52:09.771+01:002014-09-01T00:52:09.771+01:00youtube vid: https://www.youtube.com/watch?v=XhqLf...youtube vid: https://www.youtube.com/watch?v=XhqLfQYAU7Mborattohttps://www.blogger.com/profile/00102211964316265559noreply@blogger.com