tag:blogger.com,1999:blog-6847048658257278783.post2063531373241066596..comments2024-03-27T15:26:01.893+00:00Comments on Guitar FX Layouts: EHX Big Muff Pi with Tone WickerIvIarkhttp://www.blogger.com/profile/08416945174853142251noreply@blogger.comBlogger40125tag:blogger.com,1999:blog-6847048658257278783.post-63286940868169844162020-07-08T00:22:28.410+01:002020-07-08T00:22:28.410+01:00I built this pedal a while ago, I absolutely love ...I built this pedal a while ago, I absolutely love it, I love it, I love it, I'd sleep with it <3<br /><br />More seriously, I used a 3pdt toggle switch on the tone bypass to be able to put on a LED. Originally I planned on putting it to the tone wicker but, it seems that I can't, but it's fine.<br />The tone wicker seems kinda useless, I mean, you can notice it if you pay real attention but it's not that obvious.<br /><br />Anyway many thanks, very cool stuff !!Schmollhttps://www.blogger.com/profile/00429233720462754963noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-15479596424389079222018-08-01T15:14:29.884+01:002018-08-01T15:14:29.884+01:00Can you say something more about this issues? I ha...Can you say something more about this issues? I have the same problem and i cant find any solution to fix thisAnonymoushttps://www.blogger.com/profile/05144884074393653017noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-51221307404541071712017-10-01T12:21:14.278+01:002017-10-01T12:21:14.278+01:00Grounding issue cuzzin'Grounding issue cuzzin'Anonymoushttps://www.blogger.com/profile/05044802554298300448noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-22327025455877076002017-10-01T12:20:47.965+01:002017-10-01T12:20:47.965+01:00BuiltBuiltAnonymoushttps://www.blogger.com/profile/05044802554298300448noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-73586577032249675882017-08-07T01:26:58.119+01:002017-08-07T01:26:58.119+01:00I have the same problem with my wicker switch. Eve...I have the same problem with my wicker switch. Every-time I touch it the noise gets worse then it goes away.Anonymoushttps://www.blogger.com/profile/07236234255066456495noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-21098952226120889852017-07-31T12:05:04.155+01:002017-07-31T12:05:04.155+01:00Built this with matched Q1 & Q2, also matched ...Built this with matched Q1 & Q2, also matched Q3 & Q4 BC550C's, can't remember the HFE values. Sounds awesome, similar to the demo. Thank you for the layout!Chancehttps://www.blogger.com/profile/03508039283950531588noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-67211444752883278162017-01-30T06:54:20.584+00:002017-01-30T06:54:20.584+00:00Hello, is this the only schematic around by miroso...Hello, is this the only schematic around by mirosol? <br /><br />http://mirosol.kapsi.fi/wp-content/uploads/2014/07/EHX-BMPwTW.jpg<br /><br />I just completed the build in my own custom PCB and it's working just fine, the problem is there is a lot of noise with the tone wicker in the (ON?) position (switch connects no wires) i realise it has to do with the first stage (tested it touching with my fingers and i guess maybe the wires are a bit long? (5cm) is there any remedy to this? i've read all about metal film resistors, BC550C vs 2N5089 and these won't solve the problem... this all is really affected on high sustain settings, any ideas how to make the noise a bit less? <br /><br />thank you!Anonymoushttps://www.blogger.com/profile/07282065124952896310noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-35321848401339412322016-09-18T16:51:23.069+01:002016-09-18T16:51:23.069+01:00This comment has been removed by the author.ΑΘΑΝΑΣΙΟΣ ΚΑΣΒΙΚΗΣhttps://www.blogger.com/profile/07409761131663429766noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-20249347219042364552016-06-19T22:06:47.822+01:002016-06-19T22:06:47.822+01:00This comment has been removed by the author.Anonymoushttps://www.blogger.com/profile/01746649170703070797noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-4986080234748665852016-02-29T20:28:08.561+00:002016-02-29T20:28:08.561+00:00Hello everybody !
is somebody have a pcb layout of...Hello everybody !<br />is somebody have a pcb layout of this marvelous pedal ?<br /><br />FranckAnonymoushttps://www.blogger.com/profile/11143754320129280728noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-22727490461947501672015-06-24T21:56:21.262+01:002015-06-24T21:56:21.262+01:00correct. i don't see it listed that any wires ...correct. i don't see it listed that any wires connect to those lugs, so they should be empty.Zachhttps://www.blogger.com/profile/00044917566185720896noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-55832404052505430502015-06-24T21:08:41.566+01:002015-06-24T21:08:41.566+01:00hi
just to be sure…
the studs 3/6/9 of the tone wi...hi<br />just to be sure…<br />the studs 3/6/9 of the tone wicker are free of wire ?Anonymoushttps://www.blogger.com/profile/11143754320129280728noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-36788567440606718002015-06-21T21:31:49.423+01:002015-06-21T21:31:49.423+01:00awesome. since those caps are part of the tonewick...awesome. since those caps are part of the tonewicker switch, and i've build many other muffs, just haven't gotten around to this one, i'm not sure what it will change. if it causes an issue, just get the caps you need, im sure if you just needed the two caps i'm sure someone would have 2 to spare and send them to you. can't wait to hear how it turns out.Zachhttps://www.blogger.com/profile/00044917566185720896noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-71447621607533681632015-06-21T12:15:02.833+01:002015-06-21T12:15:02.833+01:00Ok Thanks for the fast answer !
i never remember p...Ok Thanks for the fast answer !<br />i never remember put a socket for try an electronic component ! thanks for the idea… <br />i let you know !<br />FranckAnonymoushttps://www.blogger.com/profile/11143754320129280728noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-68447247164798158602015-06-21T02:04:58.285+01:002015-06-21T02:04:58.285+01:00i don't see why not. it may change the effect ...i don't see why not. it may change the effect of the tonewicker, but you may end up liking that more then what it was stock. what you can do is socket those caps and try the 22pF and 500pf and see how you like it. if you don't change them.Zachhttps://www.blogger.com/profile/00044917566185720896noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-41681918742410274162015-06-20T13:43:19.708+01:002015-06-20T13:43:19.708+01:00Hi,
can i replace the 27pf by 22pf and the 430 by ...Hi,<br />can i replace the 27pf by 22pf and the 430 by a 500 pf ?<br /><br />FranckAnonymoushttps://www.blogger.com/profile/11143754320129280728noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-56244067983761134232015-05-30T15:54:49.154+01:002015-05-30T15:54:49.154+01:00Sorry, is the IC 386 the LM386N?
Thank youSorry, is the IC 386 the LM386N?<br />Thank youPiergiorgiohttps://www.blogger.com/profile/00069427016918371004noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-65374235867115626882015-05-22T15:13:39.399+01:002015-05-22T15:13:39.399+01:00Firstly, thank you so much for this fantastic site...Firstly, thank you so much for this fantastic site and wealth of information<br />I have built 2 previous pedals from this site with fantastic results!<br /><br />I am having some issue swith this build.<br />I get very faint and muffled sound with alot of background noise.<br />The tone and wicker switches cause intermittent behaviour.<br /><br />I have checked for any bridges and bad joints and don't see any issues.<br />I have tried various BC550 trannies and get the same results.<br /><br />Any pointers or ideas would be greatly appreciated.<br /><br />Voltages as follows:<br /><br />Q1: C: 4.18V B: 0.67V E: 0.056V<br />Q2: C: 4.19V B: 0.67V E: 0.056V<br />Q3: C: 4.17V B: 0.67V E: 0.056V<br />Q4: C: 6.50V B: 1.08V E: 0.51VAnonymoushttps://www.blogger.com/profile/11555874445377604168noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-89752469721281753812015-02-27T00:20:36.608+00:002015-02-27T00:20:36.608+00:00what would I omit from this schematic to have the ...what would I omit from this schematic to have the tone pot omitted and the wicker on permanently?Johnathanhttps://www.blogger.com/profile/11827410347088791150noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-82652009831234934802014-09-15T16:52:29.144+01:002014-09-15T16:52:29.144+01:00same numbers with it offsame numbers with it offkirshmanhttps://www.blogger.com/profile/03936879416950552088noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-78592888915666936712014-09-11T17:59:47.770+01:002014-09-11T17:59:47.770+01:00that was with wicker onthat was with wicker onkirshmanhttps://www.blogger.com/profile/03936879416950552088noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-38262364789366480422014-09-11T17:47:30.426+01:002014-09-11T17:47:30.426+01:00Top Left Top Right
E - .33 ...Top Left Top Right <br />E - .33 E - .02<br />B - .86 B - .58<br />C - 7.87 C - 7.41<br />Bottom Left Bottom Right<br />C - 7.39 C - 7.39<br />B - .58 B - .58<br />E - .03 E - .03kirshmanhttps://www.blogger.com/profile/03936879416950552088noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-46252221800305456032014-09-11T08:04:29.757+01:002014-09-11T08:04:29.757+01:00measure your transistor voltages and let us know t...measure your transistor voltages and let us know themIvIarkhttps://www.blogger.com/profile/08416945174853142251noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-88167413460102241532014-09-10T22:51:33.285+01:002014-09-10T22:51:33.285+01:00I'm not sure why, but my wicker doesn't ap...I'm not sure why, but my wicker doesn't appear to working. In the video he hits that wicker and he can roll back the sustain and still have distortion. With mine in either setting, if I roll the sustain under 3/4 there is no distortion at all. Maybe I have something else screwed up too. Any thoughts?kirshmanhttps://www.blogger.com/profile/03936879416950552088noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-22024377396071305382014-08-17T04:26:39.922+01:002014-08-17T04:26:39.922+01:00I appreciate the information, both of you.I appreciate the information, both of you.Drake Bowmanhttps://www.blogger.com/profile/13817082463086306151noreply@blogger.com