tag:blogger.com,1999:blog-6847048658257278783.post9176337003919993471..comments2024-03-28T18:53:30.726+00:00Comments on Guitar FX Layouts: Lovepedal COT50IvIarkhttp://www.blogger.com/profile/08416945174853142251noreply@blogger.comBlogger119125tag:blogger.com,1999:blog-6847048658257278783.post-41313041578977139382023-03-01T09:12:46.726+00:002023-03-01T09:12:46.726+00:00This is an oldie but a goodie. I built one for a ...This is an oldie but a goodie. I built one for a buddy of mine. And I like mine so much, I tried to get as close as possible. I added a power protection diode and another cut (plenty of room at the top right) and a pulldown resistor jumping over the hard to see link between the two film caps on the far left. Also changed the input cap from 4.7nf to 47nf. Clipping diodes used are BAT46's. I may also eliminate the switch altogether by adding a link from the first row down to just above the transistor. Slightly higher 2n5088's sounded best. Oh, watch your pinout orientation. The layout is misleading. Thanks for the layout as always guys.Tomhttps://www.blogger.com/profile/00083508505870725881noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-41126457596947735792020-06-19T17:02:45.472+01:002020-06-19T17:02:45.472+01:00Replying to myself here . It works fine , it appea...Replying to myself here . It works fine , it appears there isn't much difference to the sound with a lot of diodes which is why i thought the switching wasn't working but keep changing them and eventually you will find a difference . It sounds great without the diodes anyway so you could leave them out altogether.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-75945079190008862682020-06-16T16:13:15.248+01:002020-06-16T16:13:15.248+01:00Hello , just built the Cot50 and it's an inter...Hello , just built the Cot50 and it's an interesting one , it does sound good as an sound improver/boost and very reactive on guitar volume without diodes in the circuit . <br /> However i have wasted hours messing with the diodes . As per comments above they do not seem to make any difference in or out of the circuit which is puzzling as the original has them in the schematic but why if they don't do anything ? <br /> I have checked my soldering , it's all good , no bridges and works fine - apart from these diodes doing nothing ?<br /> The only other thing i can think of is that you need to use the Cot50 at ear shattering volume for them to come into play ( i believeit is supposed to be used loud).<br /> Did anybody manage to find a solution to this as plenty have had the same result .<br /> Regards WaldoAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-18283073700009636052020-03-24T02:25:49.397+00:002020-03-24T02:25:49.397+00:00Hard to tell without knowing more details, or per ...Hard to tell without knowing more details, or per example, having the schematic Tayda is using for their kit. But per example, the specific transistor you use has an impact on tone, even if they are of the same type (let's say, 2N5088), one may sound different or gainier than the other. In my experience, higher hfe transistors sound gainier and brighter (et's say that 2n588's will vary from 200 to 400 hfe sometimes). You'll need a multimeter with hfe function to get those readings. <br /><br />the "opt" part probably can be left out without a link or jumper. Iagohttps://www.blogger.com/profile/13478141026000247956noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-39941060932215507162020-03-16T20:42:22.266+00:002020-03-16T20:42:22.266+00:00Hi guys! What would be the best hfe range for thi...Hi guys! What would be the best hfe range for this?boneheadhttps://www.blogger.com/profile/17773196370902088600noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-11805784773167332482020-02-10T05:58:05.318+00:002020-02-10T05:58:05.318+00:00I forgot to mention i set bias by 600ohms fixed re...I forgot to mention i set bias by 600ohms fixed resistorboneheadhttps://www.blogger.com/profile/17773196370902088600noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-32078405889004107522020-02-09T18:42:12.545+00:002020-02-09T18:42:12.545+00:00Hi guys,
I just breadborded this. The transistor ...Hi guys,<br />I just breadborded this. The transistor is bc338, hfe 230.the voltages are <br />E=0V<br />B=1.3V<br />C=6V<br />Battery 9.1V<br />Sounds good.but voltages seem not right..<br />Any comments please!:)<br />Thanks!boneheadhttps://www.blogger.com/profile/17773196370902088600noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-20440872401546020092020-02-05T21:16:34.119+00:002020-02-05T21:16:34.119+00:00anyone ?anyone ?odieux fonziehttps://www.blogger.com/profile/10367013583988486930noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-45615600008354921852020-02-03T20:20:27.932+00:002020-02-03T20:20:27.932+00:00Hi,
I'm a complete newbie, but I succeded to b...Hi,<br />I'm a complete newbie, but I succeded to build my first stompbox, a Cot 50 using this kit : <br />https://www.taydakits.com/instructions/cot50/pages/designators-and-components--16<br />It works ! But... It doesn't sound the same as the boost part of my Mosky Deluxe Preamp, who is supposed to be a Cot 50. For short, my pedal sounds darker, less volume, less gain. I looked at another schematic on internet here :<br />http://tagboardeffects.blogspot.com/2010/07/lovepedal-cot50.html<br />Some values and the number of parts looks different.<br />Also, on my kit (see first link) there is a part where "opt" is written. Does it mean that I can ovoid using this, and only put a jumper ?<br />Again, I'm really a beginner, so your help is most welcome. Thank you !!odieux fonziehttps://www.blogger.com/profile/10367013583988486930noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-63856665418472834432018-07-02T15:31:41.137+01:002018-07-02T15:31:41.137+01:00There should always be some safe room for capacito...There should always be some safe room for capacitor voltages. For 18V circuit, one should use at least 25V rated caps. Preferably 50V.<br />+m mirosolhttps://www.blogger.com/profile/02400327798106357876noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-6119089016826030922018-06-30T02:59:54.286+01:002018-06-30T02:59:54.286+01:00Yes, just make sure all of the capacitors you are ...Yes, just make sure all of the capacitors you are using are rated at above 18V. Iagohttps://www.blogger.com/profile/13478141026000247956noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-63590549694045032772018-06-29T11:51:28.575+01:002018-06-29T11:51:28.575+01:00hI,
Does it work with 18V?
hI, <br />Does it work with 18V?<br />Bruno Vianahttps://www.blogger.com/profile/09622976996728052388noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-31242718844947433142017-06-22T21:39:45.358+01:002017-06-22T21:39:45.358+01:00Hi there guys. Just wanting to double check the in...Hi there guys. Just wanting to double check the input cap value on this ( I know people will have their own preference). On the Woodrow and several other layouts the input cap is no lower than 47nf rather than 4.7nf as above having built them both they're very different beasts. Anyone have an original to compare?Anonymoushttps://www.blogger.com/profile/02352520335582064243noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-71139759119149724202017-04-26T14:31:19.137+01:002017-04-26T14:31:19.137+01:00That SPDT switch is for turning the diodes "o...That SPDT switch is for turning the diodes "on" or "off". It' not the bypass for the effect in general. You may want to check the offboard guide for that. Iagohttps://www.blogger.com/profile/13478141026000247956noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-70757364255337489802017-04-04T21:03:53.609+01:002017-04-04T21:03:53.609+01:00Hi, what's that spdt switch for?, can I use a ...Hi, what's that spdt switch for?, can I use a true-bypass 3pdt switch?. Thank you.Anonymoushttps://www.blogger.com/profile/16033665276415435895noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-46134546353622628712017-01-02T22:29:55.959+00:002017-01-02T22:29:55.959+00:00great, thanks! I was unsure about they type of cap...great, thanks! I was unsure about they type of capacitor indicated by the yellow icon.. thanks for clarifying. I'll use Mylar film for those two. I've built a couple of simple pedals using PCBs, but have not yet tried a overboard layout.. looking forward to trying it out :)BenT763https://www.blogger.com/profile/14141004425939864633noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-80255731747588827372017-01-02T19:33:50.749+00:002017-01-02T19:33:50.749+00:00The electrolytic are the big blue one with the gro...The electrolytic are the big blue one with the ground side shown. These are polarized and need to be put in the circuit accordingly. The others are Mylar film ceramic or whatever you want to use. They are not polarized. Reading these layouts are very simple. Just learn the components. Resistors, ic's, capacitors, diodes, pots, jfets, mosfets, npn and pnp trainsistors among other things. Read up as much as you can. There is much info on the web! This circuit is a very good place to start. Have fun and happy new year!Blackwinghttps://www.blogger.com/profile/16864575046719143800noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-65482061599958995412017-01-02T19:07:17.704+00:002017-01-02T19:07:17.704+00:00I'm interested in building this pedal, however...I'm interested in building this pedal, however I have a question about the two yellow capacitors 4n7 and 100n... what does the yellow component icon represent? Are these caps electrolytic or some special kind? any pointers on reading layouts? specifically reading the color of a component type to determine the correct type used. Thanks!BenT763https://www.blogger.com/profile/14141004425939864633noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-10091620104407388912016-05-18T17:53:36.461+01:002016-05-18T17:53:36.461+01:00does anybody know what the Angus mod is about?does anybody know what the Angus mod is about?Anonymoushttps://www.blogger.com/profile/12984629731192686109noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-84034698447639173182016-04-20T15:03:58.703+01:002016-04-20T15:03:58.703+01:00built it , experimented a little bit and ended up...built it , experimented a little bit and ended up with BAT46s and a 2n5089 . the BAT46s makes it less loud (more friendly for home use) and the 2n5089 dirtier. I love it that way <br />thanx for sharing and keep up the great work<br />cheers :)Anonymoushttps://www.blogger.com/profile/12984629731192686109noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-41634205326037880622015-11-04T18:07:26.092+00:002015-11-04T18:07:26.092+00:00Try original NOS Hitachi 2SC281 in this circuit. G...Try original NOS Hitachi 2SC281 in this circuit. Granted I built the one listed here with the trimmer pot. These transistors really make this circuit sound far less farty. Not too expensive but worth it for this and other projects.<br />Anonymoushttps://www.blogger.com/profile/10040820447247748506noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-30699112267683557272015-10-12T19:11:31.913+01:002015-10-12T19:11:31.913+01:00does anyone know what the difference is between th...does anyone know what the difference is between this and the lil' china internally?Unknownhttps://www.blogger.com/profile/09902005883936494672noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-45805068443199352822015-09-07T12:38:11.447+01:002015-09-07T12:38:11.447+01:00Hey zach! Finally getting around to this. That wou...Hey zach! Finally getting around to this. That would be awesome!!!!! I'm looking at the Fred Briggs molded version of this to. Don't know which one to do. Although I like the idea of having multiple clipping options. Thnx everyone...Blackwinghttps://www.blogger.com/profile/16864575046719143800noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-56794969914420494262015-09-06T01:37:33.491+01:002015-09-06T01:37:33.491+01:00Just got everything on the standard build - actual...Just got everything on the standard build - actually sounds surprisingly good. Did 1N5817 on one side, 1N4148 on the other for some pretty different flavors of distortion (much prefer the schottky - didn't really like GE in it).<br /><br />The bias knob does very little - only the last 10% in the clockwise rotation even has the effect engaged. I half-way want to run a 1k resistor there and have a no-knob pedal.Mhttps://www.blogger.com/profile/14361947055879680785noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-32016108385491468902015-09-04T22:02:50.380+01:002015-09-04T22:02:50.380+01:00all 3 effects are based on the same old pedal, the...all 3 effects are based on the same old pedal, the electra distortion. if you don't have any Germanium then do the green giant. or to make it more difficult, you can take a look at the lotus snowjob, which is also an electra distortion based effect, and has a switch for the diodes on or off, so you could just take them off the board and wire a switch like we talked about. with the snowjob you'll have a volume pot rather then a bias pot, so the effect will actually be a true booster. <br /><br />all three effects should really have the same number of parts, the green/germanium giant just has an additional pot, everything else is the same parts, just different values. Zachhttps://www.blogger.com/profile/00044917566185720896noreply@blogger.com