tag:blogger.com,1999:blog-6847048658257278783.post8450326275863854243..comments2024-03-27T15:26:01.893+00:00Comments on Guitar FX Layouts: DAM Meathead DeluxeIvIarkhttp://www.blogger.com/profile/08416945174853142251noreply@blogger.comBlogger57125tag:blogger.com,1999:blog-6847048658257278783.post-59926324563179150892023-06-10T15:58:52.233+01:002023-06-10T15:58:52.233+01:00just completed the meathead dlx, sounds so nice bu...just completed the meathead dlx, sounds so nice but when I crank the level and attack to 14.00-15.00 position, it gets oscillation.. any tips to fix it? thanks.jeffhttps://www.blogger.com/profile/02511689786058849796noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-12016214254904685902023-05-19T21:39:40.526+01:002023-05-19T21:39:40.526+01:00Built today & works great! Thanks for posting!...Built today & works great! Thanks for posting! I had to use a 20K trimpot but dimed it to get sound (feel like it could go higher if I had a bigger trimpot). Also subbed out Q1 and Q2 for a 2SC1815 and 2N2222a since I didn't have the right ones (tried an MPSA18 and 2N2222a). Used sockets so I may swap out if I get the matching transistors. Overall happy that it fired up right away and it was a pretty simple build. I've had a couple recent demoralizing builds that didn't work out so it feels good to get a win! summerwolfhttps://www.blogger.com/profile/17447708491034236426noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-501612690133431912021-04-09T21:55:45.273+01:002021-04-09T21:55:45.273+01:00Try a 10 or a 33uf in there. Using the 22uf almos...Try a 10 or a 33uf in there. Using the 22uf almost all frequencies get amplified except extremely low frequencies. 33uF will amplifier even lower, 10uf raise the frequency when amplification starts. But in all cases we're talking about frequencies lower than you can expect from a guitar so I doubt very much you'll get any audible difference.IvIarkhttps://www.blogger.com/profile/08416945174853142251noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-10925251518729324722021-04-09T19:55:58.834+01:002021-04-09T19:55:58.834+01:00Hi all , Would I get away with a 33u instead of th...Hi all , Would I get away with a 33u instead of the 22 or should I use a different value , Used my last 22 in the crazyhorse .Wild Turkeyhttps://www.blogger.com/profile/13746343676416887925noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-82939128957792003972021-04-09T19:53:50.498+01:002021-04-09T19:53:50.498+01:00Hi all ,Would I get away with a 33uf instead of th...Hi all ,Would I get away with a 33uf instead of the 22 or should i go lower value Wild Turkeyhttps://www.blogger.com/profile/13746343676416887925noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-73221071043445048202019-12-16T05:32:43.665+00:002019-12-16T05:32:43.665+00:00It sounds like a regular meathead is more up your ...It sounds like a regular meathead is more up your alley, and a low-pass filter is incredibly easy to implement trazhjahttps://www.blogger.com/profile/17744251376035498427noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-58321164212447166372019-10-08T21:16:33.918+01:002019-10-08T21:16:33.918+01:00Also many thanks to the commment from OutlandStudi...Also many thanks to the commment from OutlandStudiosNI about the the BC10X's pinout. I got confused for a while before figuring I swapped the base and collector for Q2.NoisyBenhttps://www.blogger.com/profile/08241536383231952508noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-26943049799098562512019-10-08T21:10:48.201+01:002019-10-08T21:10:48.201+01:00I finished mine and really love it !
I went for BC...I finished mine and really love it !<br />I went for BC108B's but it sounded extremely similar to other BCXXX's combinations. I used an external bias knob wich I find usefull.<br /><br />Pics of my build - with a blendable octa-fuzz (EQD Tentacle) in front of the Meathead :<br />https://imgur.com/a/Rqylz0yNoisyBenhttps://www.blogger.com/profile/08241536383231952508noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-9949051824297738872019-01-25T12:23:51.421+00:002019-01-25T12:23:51.421+00:00Hi,
how do I change the layout in order to have t...Hi,<br /><br />how do I change the layout in order to have the following differences:<br />- implement a switchable cap<br />- remove attack poti & trim poti<br />- implement a low pass filter<br /><br />ThanksWalrus Audiohttps://www.blogger.com/profile/14357115217959155434noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-73480427417442055382018-12-06T14:37:29.178+00:002018-12-06T14:37:29.178+00:00Quick note for anyone who buys BC107B's in a p...Quick note for anyone who buys BC107B's in a plastic "TO-92" format. I bought some for this build and realised after hours of head-scratching that the pinout is different. The Base and Collector are the opposite to the layout above - in the case of the type of BC107B's I bought. Before I did that, it worked, but it was all very clean with no fuzz effect. Cheers. Anonymoushttps://www.blogger.com/profile/05182822210174344124noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-782643618099346582018-09-13T15:19:41.845+01:002018-09-13T15:19:41.845+01:00This comment has been removed by the author.Ryhttps://www.blogger.com/profile/06119598174271314789noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-63687526327806411982015-09-06T05:58:35.235+01:002015-09-06T05:58:35.235+01:00I don't think I have any error in the build no...I don't think I have any error in the build nor bridged solder connections. I will upload some high res pictures.<br /><br />I think I will re build this with entire new components a 3rd and last time. I built the regular Meathead a few weeks ago and I loved the sound, but I would like to have a Master volume so I decided to give this a shot.<br /><br />Thank you so much for replying John!Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-15361122922902998392015-09-06T05:04:01.917+01:002015-09-06T05:04:01.917+01:00it doesn't matter at all what the voltage rati...it doesn't matter at all what the voltage rating of the cap is, so that's definitely not it.<br />it seems that you either have an error in your build (i.e. wrong or misplaced component, or a bridged solder connection (short) to me.johnkhttps://www.blogger.com/profile/00643996045674470081noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-64058163962384865652015-09-06T04:24:32.278+01:002015-09-06T04:24:32.278+01:00I built this two times with no success. I have bui...I built this two times with no success. I have built more complicated stuff before so I don't think I could have messed it up twice.<br /><br />The first time I built it, I noticed that my 100n capacitor was rated at 630V.<br />Then I decided to re build it with the same parts that I carefully desolder and this time I used a 100V capacitor but same results, no sound at all.<br /><br />I have triple checked everything and made continuity tests with a DMM...everything is damn fine.<br /><br /><br />The only "sound" I notice is when I turn the trimpot almost all the way up, I got a tiny noise, similar to the noise you get when you have a scratchy pot. But that's all I can get out of it.<br /><br /><br />What can be wrong?<br />Could I have damage a component the first time I used the 630V capacitor?<br /><br /><br />Thanks in advance for any suggestion!Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-11620605130966073512014-08-13T18:15:21.735+01:002014-08-13T18:15:21.735+01:00Cuál sería el capacitor de entrada? 4n7? Yo tambié...Cuál sería el capacitor de entrada? 4n7? Yo también quiero los valores "oscuros" jeje... Gracias!<br /><br />Which one is the input cap? 4n7? I also prefer the "dark" values. Thanks!Anonymoushttps://www.blogger.com/profile/02205162050062525215noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-85999551244379191022014-06-01T20:34:16.825+01:002014-06-01T20:34:16.825+01:00hi, i started with soldering electronics from almo...hi, i started with soldering electronics from almost zero and i finished my first project in a etched box last month. it looks pretty beaten up. have a look at https://www.facebook.com/bratislav.methulskyAnonymoushttps://www.blogger.com/profile/07209398434576178485noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-60063884929887018062014-02-03T16:57:27.195+00:002014-02-03T16:57:27.195+00:00I used a 25K trim pot and pot 1K LIN for attack.I used a 25K trim pot and pot 1K LIN for attack.Borishttps://www.blogger.com/profile/11979330645070884243noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-40868292599719972672014-02-03T16:54:09.860+00:002014-02-03T16:54:09.860+00:00I finished the DAM Meathead Deluxe, it works! But ...I finished the DAM Meathead Deluxe, it works! But the attack pot respond only in the last quarter and before it whistle. any idea?<br />The trim pot what change ?<br />Sorry, my english is bad :)Borishttps://www.blogger.com/profile/11979330645070884243noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-9518222010481010282013-09-19T01:28:32.490+01:002013-09-19T01:28:32.490+01:00tried the BC184L's and the BC107B's and I ...tried the BC184L's and the BC107B's and I prefer the 2N2369 for Q2, and got it completed this afternoon. it sounds great.<br /><br />PICS:<br /><br />http://johnkvintageguitars.homestead.com/Effects/Fuzz-ODs/DAMez/MDeluxe-01.jpg<br /><br />http://johnkvintageguitars.homestead.com/Effects/Fuzz-ODs/DAMez/MDeluxe-02.jpgjohnkhttps://www.blogger.com/profile/00643996045674470081noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-3346663055005859082013-09-11T04:41:20.328+01:002013-09-11T04:41:20.328+01:00built this one today and it sounds very nice. i do...built this one today and it sounds very nice. i do have two versions of the BC337's but i think that the 2N3904 sounded better in mine for Q1 so i'm going with that. i didn't have any BC107B's and BC109C's have too high of an hfe so i used an NOS 2N2369 (hfe of 120) for Q2 and it sounds great. i might order some BC184L's and BC107B's just to give them a try in Q2 but i doubt that it'll improve it.johnkhttps://www.blogger.com/profile/00643996045674470081noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-35283438110751765652013-06-29T13:16:35.992+01:002013-06-29T13:16:35.992+01:00hi, i have problem i built it but no sound...i don...hi, i have problem i built it but no sound...i dont know what to do...shorty1111https://www.blogger.com/profile/14090913771512221254noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-43317893002150467622013-03-15T09:14:08.447+00:002013-03-15T09:14:08.447+00:00Thanks for the heads up, I corrected the layoutThanks for the heads up, I corrected the layoutIvIarkhttps://www.blogger.com/profile/08416945174853142251noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-1529309518248696332013-03-15T08:07:08.051+00:002013-03-15T08:07:08.051+00:00Hi,I built the deluxe model and it works great,I l...Hi,I built the deluxe model and it works great,I like the filter/tone pot, its good.I used 2N3904 and BC107 trans,sounds good to me.Left the bias trimmer inside ,prefered to tune up and close the lid.<br />A minor error on the onboard LED layout,on the cut/link layout theres an extra cut,its the lower one just left of the link.I did that cut and found that signal dosent get to 100nf cap and thru Filter pot and to output so theres no sound.Easy to fix but, solder a link over cut.<br />Enjoying this Fuzz pedal, thanks. torpy10https://www.blogger.com/profile/17453525556609944609noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-47215459398932861832013-02-28T16:24:23.805+00:002013-02-28T16:24:23.805+00:00What are good substitutes for the transistors? I g...What are good substitutes for the transistors? I guess the 2N3904-BC182L combination found in the standard meathead would do (as well as the BC182L having the same pinout as the BC108B)?<br />Thanks! :)Alex S.https://www.blogger.com/profile/12303830768982730853noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-62370845244381307102013-01-20T20:20:28.491+00:002013-01-20T20:20:28.491+00:00Thanks Mark, supposed so too as could not find any...Thanks Mark, supposed so too as could not find any reason for this resistor connecting Volume 3 / Filter 3 and the trimpot, but prefered to ask first.<br /><br />I've finally soldered a 4.7nF as stated, instead of the 33nF i put first, because being an input trough the filter pot I assume that you get all the values from 1uf trough 4.7nf, isn't it?<br /><br />I hope tomorrow to start boxing this effect, as while I really love the Meathead with switchable caps, I think that the de Luxe is just the same but with many more options if you want.<br /><br />Until I tried Dave's effects, never liked silicon fuzzes, but I've learnt that you can get incredible fuzzes at a fraction of their germanium cousins.<br /><br />BRJaviCAPhttps://www.blogger.com/profile/15831602988871935058noreply@blogger.com