tag:blogger.com,1999:blog-6847048658257278783.post5091444093673717176..comments2024-03-28T18:53:30.726+00:00Comments on Guitar FX Layouts: Boss HM-3 Hyper MetalIvIarkhttp://www.blogger.com/profile/08416945174853142251noreply@blogger.comBlogger26125tag:blogger.com,1999:blog-6847048658257278783.post-31317801946288794522021-08-13T03:25:15.486+01:002021-08-13T03:25:15.486+01:00Try run the hm3 after a buffer and the squelling d...Try run the hm3 after a buffer and the squelling disaapear.. regards fr Philippines.JunJun dhttps://www.blogger.com/profile/07905810487041216546noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-73197946934878669782021-08-04T10:32:55.148+01:002021-08-04T10:32:55.148+01:00Its verified! Hm3 the younger bro to hm2 !!Its verified! Hm3 the younger bro to hm2 !!Jun dhttps://www.blogger.com/profile/07905810487041216546noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-6525360783813873422020-07-12T14:28:34.435+01:002020-07-12T14:28:34.435+01:00I have build the HM3 many years ago. It realy hard...I have build the HM3 many years ago. It realy hard distortion, an I has been bought by a friend and used to play Sepultura or Trash metal.<br />I think that's normal if it causing some sensitive problem between the guitar and the amplifier.(feedback).segenkhttps://www.blogger.com/profile/00522346185835786990noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-44568632642522950112018-09-27T16:49:58.093+01:002018-09-27T16:49:58.093+01:00Could I just use some j201s and twist the legs?Could I just use some j201s and twist the legs?Anonymoushttps://www.blogger.com/profile/04902942293687051882noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-38538999893840958622017-09-01T12:18:17.073+01:002017-09-01T12:18:17.073+01:00hi
on this schematic http://www.synthdiy.com/files...hi<br />on this schematic http://www.synthdiy.com/files/2007/BOSS_HM-3.png is 470p instead of 47p.Anonymoushttps://www.blogger.com/profile/00930598537590245383noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-62798064038832623642016-06-01T21:47:03.990+01:002016-06-01T21:47:03.990+01:00hi
i am looking for HM3 schematic but using M5218...hi <br />i am looking for HM3 schematic but using M5218L ic please anyone can help me?<br /><br />thanks in advance<br /><br />GElias<br />E: goncalves.ge9@gmail.comGEhttps://www.blogger.com/profile/14025783988443646369noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-81334104008886924642016-05-12T09:20:07.565+01:002016-05-12T09:20:07.565+01:00Hi
First I have to say sorry for my bad english.
...Hi<br />First I have to say sorry for my bad english. <br />I have build the HM3 but I have a problem. If output from guitar is high it sounds ok but if the tone becomes quiter it begins to crackle and then suddenly the tone dies. The distortion trimmer also doesnt work at all - just full distortion.<br />Has somebody an idea where to search the problem?<br />Thanks<br />KaiAnonymoushttps://www.blogger.com/profile/04778279522295808902noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-42211863110290490142016-01-06T02:35:32.267+00:002016-01-06T02:35:32.267+00:00sorry I see it, thanks for designesorry I see it, thanks for designeHECTORhttps://www.blogger.com/profile/07402258403364046490noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-54664903266822077772016-01-05T23:43:27.619+00:002016-01-05T23:43:27.619+00:00somebody have the schematic, because is my first c...somebody have the schematic, because is my first circuit in this board, i dont know where i put the wires..HECTORhttps://www.blogger.com/profile/07402258403364046490noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-34990318410185546572015-03-20T22:54:54.755+00:002015-03-20T22:54:54.755+00:00Finally built this and it's a... Noisy Fuzzy B...Finally built this and it's a... Noisy Fuzzy Beast!<br />I used 1N4148 diodes,2N3904 for Q2 to Q4, 2SK30 (opposite orientation!)<br />for Q1,TL072's and the tip Mark advised me above...<br />The only problem is high pitched squeals at higher gain settings<br />and squealing when I pull the cable out of the guitar when the effect is on...<br />(I get the same cable problem whith my OCD ver3 clone)...Probably something's<br />wrong with my wiring...NickLouizhttps://www.blogger.com/profile/01535037637078819441noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-41398632187521415412015-03-20T20:47:11.837+00:002015-03-20T20:47:11.837+00:00This comment has been removed by the author.NickLouizhttps://www.blogger.com/profile/01535037637078819441noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-79104210397610889552015-02-15T18:46:03.384+00:002015-02-15T18:46:03.384+00:00Thank you IvIark!! I was afraid of having smokes a...Thank you IvIark!! I was afraid of having smokes and fire out of this pedal...ha ha...<br />but if you say so I'll go for it.... Keep up the good work....Cheers from Greece!!NickLouizhttps://www.blogger.com/profile/01535037637078819441noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-72214852916115613252015-02-15T02:27:13.270+00:002015-02-15T02:27:13.270+00:00Yes you'll just have to bend them to the sides...Yes you'll just have to bend them to the sides slightly (depending on the size of the caps) so you can physically fit them in the space. Both caps will of course keep the orientation required in the layout in terms of the negative and positive leadsIvIarkhttps://www.blogger.com/profile/08416945174853142251noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-70849351429356557932015-02-14T21:15:34.214+00:002015-02-14T21:15:34.214+00:00Is it possible to fit in the same holes two electr...Is it possible to fit in the same holes two electrolytic capacitors in parallel (1uf and 0.47uf) instead of the 1.5uf? I 'm having trouble finding those 1.5uf's.... Am i going to have any problems with the circuit? (New in DIYing.....)NickLouizhttps://www.blogger.com/profile/01535037637078819441noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-25936073275882947572014-05-15T15:45:20.623+01:002014-05-15T15:45:20.623+01:00This comment has been removed by the author.Anonymoushttps://www.blogger.com/profile/10242316509603474066noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-30687601283963749052014-05-13T12:04:14.940+01:002014-05-13T12:04:14.940+01:00Thanks for the info buddyThanks for the info buddyIvIarkhttps://www.blogger.com/profile/08416945174853142251noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-71016873960342061732014-05-13T11:24:14.598+01:002014-05-13T11:24:14.598+01:00I have rebuilt this cause I wasent realy happy wit...I have rebuilt this cause I wasent realy happy with the values on those caps. I built it same transistors and IC as my first build and get the same problem with oscilation. <br />So I replaced the 5088 with 3904 and used tl072 instead of op275. I changed the 47pf cap to 100 and the 100 to 220 as suggested and now it works perfectly!<br />So if anyone builds this I suggest to use TL072 and 2n3904 and change the values to 100 and 220pf.<br /><br />Cheers MortuaAnonymoushttps://www.blogger.com/profile/02683044457747349178noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-26690567534078544822014-05-10T07:55:09.885+01:002014-05-10T07:55:09.885+01:00This comment has been removed by the author.Anonymoushttps://www.blogger.com/profile/02683044457747349178noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-18033340879042323212014-05-08T16:04:53.751+01:002014-05-08T16:04:53.751+01:00This comment has been removed by the author.Anonymoushttps://www.blogger.com/profile/02683044457747349178noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-71254742048571733902014-05-08T10:16:20.767+01:002014-05-08T10:16:20.767+01:001n feels like a bit too much as it's bound to ...1n feels like a bit too much as it's bound to cut some top end. I'd suggest using sockets to find the smallest values that stop the oscillation.<br /><br />Good to hear you got it running!<br />+mmirosolhttps://www.blogger.com/profile/02400327798106357876noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-19007180230928298632014-05-08T08:38:41.155+01:002014-05-08T08:38:41.155+01:00I made those changes but the values wasent enogh. ...I made those changes but the values wasent enogh. I ended up replacing both with 1nf and now it works excellent!<br />If thrash/deathmetal is your thing, BUILD IT! =)Anonymoushttps://www.blogger.com/profile/02683044457747349178noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-86867951886961765612014-05-07T15:14:45.803+01:002014-05-07T15:14:45.803+01:00You could try upping the values of 47p to 120p and...You could try upping the values of 47p to 120p and 100p to 220p. That should take most of the oscillation.<br />+mmirosolhttps://www.blogger.com/profile/02400327798106357876noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-19840893155044901422014-05-07T14:33:07.394+01:002014-05-07T14:33:07.394+01:00Well, I have boxed it now...even replaced all wiri...Well, I have boxed it now...even replaced all wiring to shielded wire, the squeals remains. The squeals comes then I turn the Distortion up to around 3/4...should I try another value on the pot or do you have an another idea?Anonymoushttps://www.blogger.com/profile/02683044457747349178noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-5858661238849809482014-05-06T16:52:27.755+01:002014-05-06T16:52:27.755+01:00That's excellent, thanks for verifying. Have ...That's excellent, thanks for verifying. Have you boxed it yet? I always get squeals out of distortion, fuzz and even overdrive pedals sometimes when I test them at higher gain settings before boxing up. The shielding provided by the box usually cures any problem like that. And try to keep separation between the input and output wires.IvIarkhttps://www.blogger.com/profile/08416945174853142251noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-12440339193447259652014-05-06T16:31:01.378+01:002014-05-06T16:31:01.378+01:00...I used SK30A, OP275 and 2N5088 as substitutes. ......I used SK30A, OP275 and 2N5088 as substitutes. <br /><br />/MortuaAnonymoushttps://www.blogger.com/profile/02683044457747349178noreply@blogger.com