tag:blogger.com,1999:blog-6847048658257278783.post8229390169757184840..comments2024-03-27T15:26:01.893+00:00Comments on Guitar FX Layouts: ZVex Super Hard OnIvIarkhttp://www.blogger.com/profile/08416945174853142251noreply@blogger.comBlogger198125tag:blogger.com,1999:blog-6847048658257278783.post-1777097684586100272021-09-30T20:56:26.925+01:002021-09-30T20:56:26.925+01:00I made one with the extra volume knob and sounds g...I made one with the extra volume knob and sounds great, I used a bat41 diode, will this cause a problem in the future?evhttps://www.blogger.com/profile/02609166219196414932noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-67188692306449043902021-06-17T12:10:13.959+01:002021-06-17T12:10:13.959+01:00I’ve got a sho build yeah for troubleshooting info...I’ve got a sho build yeah for troubleshooting info in the comments and some answers about where to look.<br /><br />https://www.reddit.com/r/diypedals/comments/o1dnyb/sho_build_troubleshooting/?utm_source=share&utm_medium=ios_app&utm_name=iossmf<br /><br />Tldr: when used the effect has signal which goes through the veroboard but there is a huge volume drop and no effect from the potioneometer. The amp has to be cranked for the signal to be heard.<br /><br />All of the standard troubleshooting methods (cuts, reflow) have been checked. <br /><br /><br /><br />Anonymoushttps://www.blogger.com/profile/00413061539593997974noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-14711880251614136262021-06-07T02:40:44.374+01:002021-06-07T02:40:44.374+01:00Hi can you suggest where I could start?
As I’ve ...Hi can you suggest where I could start? <br /><br />As I’ve said the signal is going through to the amp. There is no crackle when adjusting the pot. And I believe the mosfet may be damaged from soldering since I have no sockets (have ordered some now but won’t arrive for a while). <br /><br />One thing which isn’t clear is the pot wiring. How is the pot orientated in that photo? Shaft up or down. <br /><br />I can provide more clear photos In the morning.Anonymoushttps://www.blogger.com/profile/00413061539593997974noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-75854101192210408532021-06-07T01:23:46.999+01:002021-06-07T01:23:46.999+01:00It's doubtful that using a 22uF cap in that po...It's doubtful that using a 22uF cap in that position would cause the problems you have mentioned. That cap and the 100K resistor following creates a high pass filter. With the 10uF it will allow all frequencies to pass over 0.15hz and so essentially will let through the entire guitar frequency range. With a 22uF in that position it will let all frequencies pass over 0.07hz and so the audible differences between the two should be imperceptible.<br /><br />This is a very loud boost so if yours is barely audible then it suggests you have a problem elsewhereIvIarkhttps://www.blogger.com/profile/08416945174853142251noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-14432232637542838312021-06-07T01:16:16.426+01:002021-06-07T01:16:16.426+01:00hi in my build i have used a 22uf instead of a 10u...hi in my build i have used a 22uf instead of a 10uf its all i had to hand at the time. The output is incredibly low and is barely audible even with a cranked amp.<br /><br />i want to verify that it is the value difference causing this? otherwise the other possibility is that the mosfet is damaged during soldering since i didnt use a socket. But since there is output signal i didnt think it was that.<br /><br />As an extra question what is the purpose of the 10uf cap in this circuit.Anonymoushttps://www.blogger.com/profile/00413061539593997974noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-73433481828461615872021-06-07T01:13:04.752+01:002021-06-07T01:13:04.752+01:00ghdrghdrAnonymoushttps://www.blogger.com/profile/00413061539593997974noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-88039468606567328652021-06-07T01:06:27.208+01:002021-06-07T01:06:27.208+01:00what would happen if the 10u cap at the end of the...what would happen if the 10u cap at the end of the pedal was a larger value. Asking cause i have a 22u cap and no 10u. also what would happen if that cap was removed?Anonymoushttps://www.blogger.com/profile/00413061539593997974noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-22116021246523307672020-09-20T01:30:50.646+01:002020-09-20T01:30:50.646+01:00Such a simple but good boost. Built 2, both sound ...Such a simple but good boost. Built 2, both sound awesome.JHhttps://www.blogger.com/profile/13874706341049615679noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-73880029243343507832020-02-17T15:35:42.948+00:002020-02-17T15:35:42.948+00:00thanks a bunchthanks a bunchmichaelhttps://www.blogger.com/profile/15468035285300833302noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-24976363348075768092020-02-17T15:27:37.679+00:002020-02-17T15:27:37.679+00:00The original SHO has a text next to the pot - &quo...The original SHO has a text next to the pot - "Crackle OK".<br /><br />The way the gain is set with that pot will always make the MOSFET crackle. So this is expected behaviour and nothing you do can make it go away. With this particular circuit that is.<br />+mmirosolhttps://www.blogger.com/profile/02400327798106357876noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-90392270157768837672020-02-17T14:45:20.026+00:002020-02-17T14:45:20.026+00:00is it common for this build to make a static noise...is it common for this build to make a static noise as you sweep the pot? i would assume this is from DC in the audio path but i coulnt find a way to rectify it.michaelhttps://www.blogger.com/profile/15468035285300833302noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-24557865193878521482018-06-24T19:20:18.802+01:002018-06-24T19:20:18.802+01:00Hi guys it’s working but there’s a hell of an amou...Hi guys it’s working but there’s a hell of an amount of oscillation.<br /><br />Any advice<br /><br />Bs108 voltages:<br />D 4.4v<br />G .9v<br />S 0Anonymoushttps://www.blogger.com/profile/12476167881798689487noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-50524756772287105192018-02-21T11:32:40.378+00:002018-02-21T11:32:40.378+00:00This comment has been removed by the author.Igo Suvhttps://www.blogger.com/profile/11201179933841444923noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-90662738016920566982018-02-12T16:22:48.787+00:002018-02-12T16:22:48.787+00:00must have pedal. try to use it after fuzz face or ...must have pedal. try to use it after fuzz face or rangemaster -> earthlessIgo Suvhttps://www.blogger.com/profile/11201179933841444923noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-76610570954319983792018-01-30T19:03:43.238+00:002018-01-30T19:03:43.238+00:0010nF works much better, slightly treble boosting a...10nF works much better, slightly treble boosting and more "growl". 8.2 or even 2.2 will work also.gematherhttps://www.blogger.com/profile/10661025463506237406noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-48879013443412776722018-01-30T18:58:45.199+00:002018-01-30T18:58:45.199+00:00i choosed 8.2 nF as the input cap. Slightly treble...i choosed 8.2 nF as the input cap. Slightly treble boosting.gematherhttps://www.blogger.com/profile/10661025463506237406noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-20308171955730726302017-08-13T08:27:49.459+01:002017-08-13T08:27:49.459+01:00The MOSFET is then functioning perfectly, if you h...The MOSFET is then functioning perfectly, if you hear the crackle. Now your issue must be that the signal does not reach the gate. Triple check the input cap (connected to the input wire) and then probe it to see where the signal dies.<br /><br />http://diy-fever.com/misc/audio-probe/<br />+mmirosolhttps://www.blogger.com/profile/02400327798106357876noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-87991459651213020892017-08-13T04:29:00.532+01:002017-08-13T04:29:00.532+01:00Well, I just replaced the BS170 with a 2n7000 afte...Well, I just replaced the BS170 with a 2n7000 after reading that mosfets are easily damaged by static (I checked the pinout), and now the gain pot crackles all the way through and still no guitar sound. Suryadiphttps://www.blogger.com/profile/06471299173946241903noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-46610047729425369212017-08-13T04:03:09.849+01:002017-08-13T04:03:09.849+01:00Hi, I built one of these and the effect doesn'...Hi, I built one of these and the effect doesn't work. There's no sound at either extreme of the pot and only some hiss in between. My transistor voltages are (DGS): 9.44, 0, 0.<br />I've checked for shorts, tranny orientation, etc but I can't figure it out. Any help would be greatly appreciated!Suryadiphttps://www.blogger.com/profile/06471299173946241903noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-81329149752135060262016-11-13T21:12:37.597+00:002016-11-13T21:12:37.597+00:00Hi, I'm getting a perfectly working Sho on a ...Hi, I'm getting a perfectly working Sho on a battery but when I'm running from a power supply I get an awful hum! I have the 47 cap in and I'm using two diodes as per the standard schematic, would a single Zennor diode fix this? If so what is the code number I need? Thank you. DanAnonymoushttps://www.blogger.com/profile/00872871048181024246noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-79483656349327562042016-10-16T21:28:31.122+01:002016-10-16T21:28:31.122+01:00There have been different versions of the Super Ha...There have been different versions of the Super Hard On made by Zvex. The part that changed is the static discharge protection for the MOSFET. There is a version with two silicon diodes and a version with one Zener diode. <br /><br />The fifth resistor in this is a current limiting resistor for the LED. <br /><br />The 47uf cap from +9V to ground is meant to smooth out ripple current in the power supply. The original did not need this because it was powered with a battery only. If you want to use a daisy chain you may want to include that cap, but you can omit the cap if you want.Travishttps://www.blogger.com/profile/00836791717229314419noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-10852325264946224732016-10-16T20:20:46.875+01:002016-10-16T20:20:46.875+01:00Am I the only one to notice all the differences in...Am I the only one to notice all the differences in the diagrams and pictures?<br />The vero layout shows 5 resistors but the photo of the circuit board in the pedal has only 4.<br />The circuit diagram shows 4 resisters but it also shows 2 diodes.<br />The vero layout has lost the diode from the gate to +ve.<br />Finally, where did the 4.7u across +ve & -ve come from? Its not in any circuit I've seen.Anonymoushttps://www.blogger.com/profile/11662982710814936920noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-54658736852795401732016-03-02T02:37:26.545+00:002016-03-02T02:37:26.545+00:00Just trying this myself now and having the same pr...Just trying this myself now and having the same problem as Vince mentioned - a whine while the pedal is bypassed that goes from gain at 0 to about 12:00, changing pitch through that sweep, and disappears beyond that. Pedal engaged sounds fine and the pot seems to do the trick as far as level control.<br /><br />I used mirosol's decription above as well as <a href="http://i76.photobucket.com/albums/j6/IvIark_2006/DIY/Volumetrimmerdaughterboard.png~original" rel="nofollow">this</a> image of Mark's from elsewhere in this thread (where he recommends putting this pot in place of a 100k resistor in the circuit, contrary to miro's remarks - which way is correct?).<br /><br />The only thing I can think of that might be causing this is the empty connections now on the switch where the effect output and output jack were formerly wired. Should there be connections on one or both of those lugs?Stevehttps://www.blogger.com/profile/00731154444735141253noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-67682512225718956242016-02-01T23:49:09.303+00:002016-02-01T23:49:09.303+00:00i had 2 bs170s broken in my sho. ive put the sho a...i had 2 bs170s broken in my sho. ive put the sho after some high gain pedal on maximum volume. can the other pedals fired the bs170s? is there any way to protect them?shvtsvckahttps://www.blogger.com/profile/16339459906807310254noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-87803865294133510392016-01-16T15:28:27.566+00:002016-01-16T15:28:27.566+00:00I've built this ovne before, and it worked gre...I've built this ovne before, and it worked great.<br />Now that I want to build it again, I open up my Zvex SHO, and saw two more transistors on the PCB, anybody know what they do?Commiebitchhttps://www.blogger.com/profile/05359139352855524643noreply@blogger.com