tag:blogger.com,1999:blog-6847048658257278783.post977350292654591370..comments2024-03-27T15:26:01.893+00:00Comments on Guitar FX Layouts: Lovepedal Purple Plexi 800IvIarkhttp://www.blogger.com/profile/08416945174853142251noreply@blogger.comBlogger162125tag:blogger.com,1999:blog-6847048658257278783.post-62084795886589263792023-12-10T21:18:12.035+00:002023-12-10T21:18:12.035+00:00I'd love to see that, yeah! Thank youI'd love to see that, yeah! Thank youZappyhttps://www.blogger.com/profile/05730291233794400795noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-21658792042257523912023-12-10T19:29:04.021+00:002023-12-10T19:29:04.021+00:00Yeah 10k caused high pitched tones in my build. I ...Yeah 10k caused high pitched tones in my build. I could send you a pic if you need it. ;) Dutcheffectshttps://www.blogger.com/profile/05684655737130245984noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-68394485048387635142023-12-10T18:57:54.317+00:002023-12-10T18:57:54.317+00:00Thank you for your quick response :) I already bou...Thank you for your quick response :) I already bought a 10k stereo.. so lets see how it will go..Zappyhttps://www.blogger.com/profile/05730291233794400795noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-547478732415290452023-12-10T18:02:56.234+00:002023-12-10T18:02:56.234+00:00I thought minus went to 6th leg of stereo pot. Pot...I thought minus went to 6th leg of stereo pot. Potmeter I used was 1k stereo log. Not 10k.Dutcheffectshttps://www.blogger.com/profile/05684655737130245984noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-35176741477074820912023-12-10T17:59:14.541+00:002023-12-10T17:59:14.541+00:00This comment has been removed by the author.Dutcheffectshttps://www.blogger.com/profile/05684655737130245984noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-52404388910937185532023-12-10T14:33:50.998+00:002023-12-10T14:33:50.998+00:00This comment has been removed by the author.Zappyhttps://www.blogger.com/profile/05730291233794400795noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-63559908573551047262023-12-10T14:32:29.947+00:002023-12-10T14:32:29.947+00:00Hi :) One question about your modification... the ...Hi :) One question about your modification... the 10uF cap in which direction does it go? Minus to pin 8 of the IC or to 6 of the pot?<br />thank you! Zappyhttps://www.blogger.com/profile/05730291233794400795noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-48463373965739749912023-05-03T16:56:40.873+01:002023-05-03T16:56:40.873+01:00For people who want less gain from the effect. I b...For people who want less gain from the effect. I build this in combination with a Echoplex preamp 18V with volume knob, to get my interpretation of the Zeppelin pedal of Imperial Electrical. To achieve a very nice clean up of the massive amounts of gain this layout has, I made a cut between pin 1 and 8 of the 386 on the vero. Next I got a 10K log stereo potmeter. Connected 1,2 and 4 to ground, 3 to gain out of the layout, 5 to pin 1 and 6 to pin 8 in series with a 10uf cap. So now you can regulate the gain of the circuit and the gain of the 386 with one pot and you can go from a more clean overdriven SLP to extreme roaring SLP. This in combination with the echoplex preamp in front in the same box gives you instant Jimi Page sound and more.Dutcheffectshttps://www.blogger.com/profile/05684655737130245984noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-43287772948598658282023-05-03T16:50:55.733+01:002023-05-03T16:50:55.733+01:00This comment has been removed by the author.Dutcheffectshttps://www.blogger.com/profile/05684655737130245984noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-41791868273802783982022-07-15T03:38:59.049+01:002022-07-15T03:38:59.049+01:00I made a breadboarded diagram for this vero, rotat...I made a breadboarded diagram for this vero, rotating it 90 degrees, https://www.tinkercad.com/things/6QLyTFr49lCGarvanhttps://www.blogger.com/profile/02424256812483505526noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-61751519999614474892021-07-16T17:59:25.385+01:002021-07-16T17:59:25.385+01:00Sorry, autocorrect. Expectedly I was getting a wh...Sorry, autocorrect. Expectedly I was getting a whistle sound when the gain knob was cranked. The 47 ohm resistor trims off the noise. You could just roll back the gain but it’s nice to have an effect without that garbage. Great sounding high gain overdrive. It almost feels like it does a cab sim too. Pretty nice. Carbon resistors are probably a good call. I used the BAT46.Tomhttps://www.blogger.com/profile/00083508505870725881noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-36514186407328892302021-07-16T01:16:12.719+01:002021-07-16T01:16:12.719+01:00Sounds good. Unexpectedly, I’m getting a squeal w...Sounds good. Unexpectedly, I’m getting a squeal with the gain dimmed. So I added a 47r resistor in line with lug three of the gain pot to trim it off. Plenty of chug and no pig sounds. Thanks for the layout as always.Tomhttps://www.blogger.com/profile/00083508505870725881noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-78428603350914500692020-09-06T22:02:43.657+01:002020-09-06T22:02:43.657+01:00Just finished this build, it sounds AMAZING! it ge...Just finished this build, it sounds AMAZING! it get SUPER loud though, maybe i did something, but the volume pot has to stay almost all the way down to stay at unity, anything past a quarter turn makes it unbearably loud, any one else run across this? or is this just a characteristic of the pedal? its hard to tell from youtube videos. Either way it sounds GREAT!Anonymoushttps://www.blogger.com/profile/10396988136358301632noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-2919713157552564902018-05-28T10:43:35.582+01:002018-05-28T10:43:35.582+01:00Finished this one a few days ago with Lovepedal JT...Finished this one a few days ago with Lovepedal JTM in the same case(hammond 1590b). Lovepedal JTM in front of PLEXI. I used a 1.8k in place of the 1.74k and all resistors are 1% tolerance. In JTM i used BC550 (HFE 670) and do the job well. PLexi gain knob doesnt really do anything until 3-4 oclock on the sweep, then it gets kinda noisy with a huge jump in the gain. With JTM in front sound great, cleaner distortion and no fuzz. Only plexi sound is fuzzy, unuseless for me. I don`t try to change LM386N, but that is only solution. abartissimohttps://www.blogger.com/profile/16320788457598378423noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-21811554386852500222018-05-04T19:29:04.629+01:002018-05-04T19:29:04.629+01:00Nice one..! Great sounding pedal.
Which is the 370...Nice one..! Great sounding pedal.<br />Which is the 370pf cap function? Any idea?IvMhttps://www.blogger.com/profile/02555112437631034123noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-44817971060278358772018-03-24T17:31:18.797+00:002018-03-24T17:31:18.797+00:00Built this as my first build. It works great! I di...Built this as my first build. It works great! I didn't have any 10R resistors on hand so I ended up using 220R and it has tons of gain. It borders the line of a brutal distortion and a edgy fuzz. Quite nice though. Thanks for the layout!Taylorhttps://www.blogger.com/profile/10513189743574970884noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-90327166346982127102018-03-10T14:48:37.808+00:002018-03-10T14:48:37.808+00:00I've built a few of these, which turned out am...I've built a few of these, which turned out amazing (thanks |v|ark!). The one issue I'm seeing now (I've checked all solder points, reflowed, new parts) is that the tone knob does not work. Has anyone come across this and found a solution?<br /><br />Thanks!Erichttps://www.blogger.com/profile/03331005267852079407noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-59064994985427836292018-01-30T23:29:00.630+00:002018-01-30T23:29:00.630+00:00Try change the 470r resistor to a higher value. Bu...Try change the 470r resistor to a higher value. But you will probably get squeeling sounds at high gain. Joel Bergströmhttps://www.blogger.com/profile/15100655168227794028noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-62807958234957169622018-01-28T15:09:30.629+00:002018-01-28T15:09:30.629+00:00Is there a way to increase the gain? Also, can ce...Is there a way to increase the gain? Also, can certain capacitors have an effect on gain? I'm using 100volt 47uf capacitors and a sozo 4.7nf. Erichttps://www.blogger.com/profile/03331005267852079407noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-33087852010214818362017-11-01T01:33:54.343+00:002017-11-01T01:33:54.343+00:00One of the links wasn't soldered proberly.
No...One of the links wasn't soldered proberly. <br />Now it works and sounds good! I used a trimmer in series with gain 3 to get rid of the squeel.<br /><br /><br />Joel Bergströmhttps://www.blogger.com/profile/15100655168227794028noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-90150308905031728442017-10-30T13:14:10.911+00:002017-10-30T13:14:10.911+00:00Great build! Too bad I can't get it to work.
I...Great build! Too bad I can't get it to work.<br />I get a clean sound on lower gain settings and no distortion at all. At higher gain settings a get massive squeals and oscillation.<br />I've been trying the 150r in series with lug 3 on the volume pot and checked for invisable links with a multimeter but no luck.<br />Interestingly if I pull out the (socketed) diode I get distortion for 1 second or 2, then silence. <br /><br />I use a lm386n IC and I suspect it's faulty. I don't have the correct diode but since it's just for reverse polarity protection I've also tried omit it completely with the same result.<br />Any ideas? Joel Bergströmhttps://www.blogger.com/profile/15100655168227794028noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-85136821930283579372017-09-24T23:10:22.089+01:002017-09-24T23:10:22.089+01:00I have the same, use two diodes in parallel can he...I have the same, use two diodes in parallel can help to avoid noise.<br />Worked to me.<br />:)IvMhttps://www.blogger.com/profile/02555112437631034123noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-20832747635269898172017-09-24T22:42:29.240+01:002017-09-24T22:42:29.240+01:00Anyone have the schematic for this? I saw one tha...Anyone have the schematic for this? I saw one that had two diodes - not sure if that's correct.Erichttps://www.blogger.com/profile/03331005267852079407noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-17505661781730157562017-09-24T16:14:02.219+01:002017-09-24T16:14:02.219+01:00Nope... nothing at all.
That resistor is to change...Nope... nothing at all.<br />That resistor is to change the 5k pot sweep to... I'll say 2k5?IvMhttps://www.blogger.com/profile/02555112437631034123noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-48889652041474126812017-09-24T16:04:57.275+01:002017-09-24T16:04:57.275+01:00Questions - If I removed the 4.7k resistor and add...Questions - If I removed the 4.7k resistor and added a 5k pot, would that add anything to the tone in regards to adjusting or would it just not work?<br /><br />I think what I'm looking to to is to add a tone stack. Possible?Erichttps://www.blogger.com/profile/03331005267852079407noreply@blogger.com