tag:blogger.com,1999:blog-6847048658257278783.post7250881415648155925..comments2024-03-27T15:26:01.893+00:00Comments on Guitar FX Layouts: Mad Professor Stone Grey DistortionIvIarkhttp://www.blogger.com/profile/08416945174853142251noreply@blogger.comBlogger137125tag:blogger.com,1999:blog-6847048658257278783.post-47008876631665523602021-07-31T15:23:26.621+01:002021-07-31T15:23:26.621+01:00I built it and it works, but i'm a bit disapoi...I built it and it works, but i'm a bit disapointed, not really high gain, sounds ok but nothing that will me box it.<br />As someone already noted, i can't make any difference with or without the transistors, both souns the sameAlltrax74https://www.blogger.com/profile/13079701857494829507noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-22146646027899917402020-08-12T11:11:35.233+01:002020-08-12T11:11:35.233+01:00Is it possible that you have the 1N4004 in upside ...Is it possible that you have the 1N4004 in upside down? A diode is to electricity similar to a check valve in plumbing and only lets current flow in one direction. Make sure the stripe on the diode is oriented the same as the drawing.Petehttps://www.blogger.com/profile/11738112574402836173noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-84538695494008611422020-08-11T16:20:16.938+01:002020-08-11T16:20:16.938+01:00Kind of new to this and Im having some issues with...Kind of new to this and Im having some issues with this build. I used a TL051 and 2N3819's. I'm not getting any sound and the 1N4004 gets really hot. The layout looks correct. What would cause the 1N4004 to get that hot?Anonymoushttps://www.blogger.com/profile/13136852665216267777noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-52915910599346749002019-06-21T08:39:56.128+01:002019-06-21T08:39:56.128+01:002.2nF for a 6.8nF and the 10nF for a 22nF
I’ll tr...2.2nF for a 6.8nF and the 10nF for a 22nF<br /><br />I’ll try it out and will let you know. Thanks man.jrdnhttps://www.blogger.com/profile/05277146659870623754noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-84155502070831535902019-06-19T22:56:23.377+01:002019-06-19T22:56:23.377+01:00*subbed instead of sinne :D *subbed instead of sinne :D Eli_Klngsmkthttps://www.blogger.com/profile/04271664305312932268noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-50889859167388791802019-06-19T16:38:30.571+01:002019-06-19T16:38:30.571+01:00Yeah quite trebly. Look at my comments above. I si...Yeah quite trebly. Look at my comments above. I sinne two capacitors to add some body.Eli_Klngsmkthttps://www.blogger.com/profile/04271664305312932268noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-20459600029110587462019-06-19T15:56:57.719+01:002019-06-19T15:56:57.719+01:00Nvm found the cause. Had it working now and noise...Nvm found the cause. Had it working now and noise completely gone. A little trebly isn't it? Used 2n7000 and 071. Thanks for this layout IvIark!unknownhttps://www.blogger.com/profile/04260786466785182103noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-69293549353750489702019-06-18T09:43:15.378+01:002019-06-18T09:43:15.378+01:00Just built this using 2n7000. Tested it outside t...Just built this using 2n7000. Tested it outside the enclosure and it worked but was too noisy and the distortion sounded too dry and even at full didn't have enough distortion. If I turn the tone knob full it gives out a shrill sound. I boxed it and the noise was gone but the distortion sound and tone knob was still the same. What could be wrong? Will try to resolder the parts, might be a cold solder joint.jrdnhttps://www.blogger.com/profile/05277146659870623754noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-77868473446274394172018-12-14T21:15:11.062+00:002018-12-14T21:15:11.062+00:00Oh sorry, didn't see your comment up until now...Oh sorry, didn't see your comment up until now. Here are some pictures. Hope those help.<br /><br />https://www.dropbox.com/sh/61fe4aph0l506a5/AAA429IsBZsbSiwMRAnZlQHoa?dl=0Eli_Klngsmkthttps://www.blogger.com/profile/04271664305312932268noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-72768531483361282382018-11-18T18:11:58.132+00:002018-11-18T18:11:58.132+00:00Just getting to build this on now (sorry for resur...Just getting to build this on now (sorry for resurrecting an old post)... Any chance you have a pic of your 1590B internals? Trying to figure out how to fit this all in. Thanks.Dirty_Boogiehttps://www.blogger.com/profile/08115669510280550149noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-33294866415914964412018-06-07T02:38:21.870+01:002018-06-07T02:38:21.870+01:00So I replaced the 2.2nF for a 6.8nF and the 10nF f...So I replaced the 2.2nF for a 6.8nF and the 10nF for a 22nF and that did it for me. At least for now ;-)Eli_Klngsmkthttps://www.blogger.com/profile/04271664305312932268noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-40130755349645832692018-05-23T11:10:13.999+01:002018-05-23T11:10:13.999+01:00Just one question: what cap should I replace for a...Just one question: what cap should I replace for a bit more low end?Eli_Klngsmkthttps://www.blogger.com/profile/04271664305312932268noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-87748451419837516142018-05-23T01:36:06.661+01:002018-05-23T01:36:06.661+01:00Cool little pedal (put it into a 1590b), more of a...Cool little pedal (put it into a 1590b), more of a modern and tight sound. Used a TL071 as IC2 and can't complain ;-). Thanks for another great layout!Eli_Klngsmkthttps://www.blogger.com/profile/04271664305312932268noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-67610979975379216872017-08-05T00:38:53.302+01:002017-08-05T00:38:53.302+01:00If you looks closely at the ICs you'll see a l...If you looks closely at the ICs you'll see a little half moon representing the top of the IC. For both ICs the half moon is on top. Zachhttps://www.blogger.com/profile/00044917566185720896noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-91543982316954192592017-08-04T23:23:44.407+01:002017-08-04T23:23:44.407+01:00Ok I cleaned my glasses looks like marks are on to...Ok I cleaned my glasses looks like marks are on top of both?timidaterhttps://www.blogger.com/profile/16669610251638084129noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-76097245802725882302017-08-04T23:08:12.022+01:002017-08-04T23:08:12.022+01:00what about orientation of the CD4069UBE, TL071 ic&...what about orientation of the CD4069UBE, TL071 ic's ? I dont see any markings or pinouts Thanks!timidaterhttps://www.blogger.com/profile/16669610251638084129noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-19045864061716210402017-05-14T01:18:11.953+01:002017-05-14T01:18:11.953+01:00Built the 2n7000 version sounds well pukka.
Fyi u...Built the 2n7000 version sounds well pukka. <br />Fyi used a 741 at the start, dunno if it was a dodgy chip but stuck a tl061 in and no problemos. Teddeehhttps://www.blogger.com/profile/16226967416872023302noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-15639687872662527882017-04-22T23:35:32.820+01:002017-04-22T23:35:32.820+01:00I built 2n3819 version. Sounds great but I cant he...I built 2n3819 version. Sounds great but I cant hear any difference with or without fets. Claudiohttps://www.blogger.com/profile/15857640090190862061noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-33384323254993632442017-04-13T00:14:50.213+01:002017-04-13T00:14:50.213+01:00I have a few metal can mosfet 2n3823 could be a go...I have a few metal can mosfet 2n3823 could be a good replacement for 3819?Claudiohttps://www.blogger.com/profile/15857640090190862061noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-86197674356224827782016-09-11T00:23:35.460+01:002016-09-11T00:23:35.460+01:00Just FYI - I tried all three versions of this - th...Just FYI - I tried all three versions of this - the two included here and the one in the forums, and all of them were just incredibly bright (trebly) and there was nothing I could do to tame it down. If that is what you want this is the build for you.motterpaulhttps://www.blogger.com/profile/15536330842070250774noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-6997470640644548262016-01-29T06:23:48.814+00:002016-01-29T06:23:48.814+00:00100% okay.100% okay.EvrgrnFXhttps://www.blogger.com/profile/17185040129027773830noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-25822177664759154242016-01-29T06:20:25.317+00:002016-01-29T06:20:25.317+00:00Both layouts have a 100nf cap as per the schematic...Both layouts have a 100nf cap as per the schematics. Not sure what discrepancy you're seeing. I built mine off this layout (2N3819), many months ago and I just opened it up to check the value and it's 100nf as it should be. Double check and make sure you have updated layouts.EvrgrnFXhttps://www.blogger.com/profile/17185040129027773830noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-62002236459232453392016-01-17T21:15:14.990+00:002016-01-17T21:15:14.990+00:00BTW I think I spotted a potential mistake.......C8...BTW I think I spotted a potential mistake.......C8 is 100 nF in all the available schematics I am finding such as this (http://3.bp.blogspot.com/-P2RCqMsl__A/TxLM0MEtCJI/AAAAAAAAAio/rVtTwB3v83g/s1600/Mad+Prof+stone+grey+schem.gif) .......the layout calls for a 10n cap ?<br />Xavierhttps://www.blogger.com/profile/05234810772869268622noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-78653198999422903112016-01-14T11:47:50.618+00:002016-01-14T11:47:50.618+00:00Hi, I just built it and it sounds as it should.......Hi, I just built it and it sounds as it should......all pots work as expected, but I am getting little distortion at max (like when on "9:00"). Only sub part is a TL071 for IC2........... voltages as follows<br /><br />Pin 1: 0,17<br />Pin 2: 3,92<br />Pin 3: 3,58<br />Pin 4: 0<br />Pin 5: 0,17<br />Pin 6: 3,92<br />Pin 7: 7,85<br />Pin 8: 0<br /><br />Voltage is 9,19<br /><br />Any idea why I am not getting enough gain ?<br /><br />Thanks in advance !!Xavierhttps://www.blogger.com/profile/05234810772869268622noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-88636070008224903542016-01-08T12:54:30.160+00:002016-01-08T12:54:30.160+00:00hello, have I constructed the version 2N7000 with ...hello, have I constructed the version 2N7000 with tl051 and it sounds very well, but the potenciometro of volume makes something strange, to the maximum the whole sign goes away and nothing sounds, also he does not start dreaming even spent the half more or less, much does not matter for me because I always put the volume in a position compared with the clean sound and do not touch it, but can this be affecting the sound of the pedal? thank youAnonymoushttps://www.blogger.com/profile/04360120072045465418noreply@blogger.com