tag:blogger.com,1999:blog-6847048658257278783.post8351210448970979875..comments2024-03-29T01:36:12.851+00:00Comments on Guitar FX Layouts: Klon Centaur - Bare Bones - True BypassIvIarkhttp://www.blogger.com/profile/08416945174853142251noreply@blogger.comBlogger43125tag:blogger.com,1999:blog-6847048658257278783.post-5482586029075764742018-01-04T15:27:10.926+00:002018-01-04T15:27:10.926+00:00Can I simply add a charge pump daughter board to t...Can I simply add a charge pump daughter board to this if I wanted to run it at 18v? also Would two TL072s work with this like the Klon Rev2 layout has? Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-47692813859824391592016-05-17T16:33:10.654+01:002016-05-17T16:33:10.654+01:00I was able to fix the gain rotation cutting out co...I was able to fix the gain rotation cutting out completely by snipping the 3k9 CLR resistor. I opted to connect the LED the traditional way (off board wiring FAQ), rather than connect the + LED leg to the board itself.<br /><br />After I removed that, it worked great, and sounds great too! Just like my Aion Electronics Klon KTR clone! (minus some available output volume)Anonymoushttps://www.blogger.com/profile/09742051605011549480noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-6080510401690958752016-05-16T19:08:48.583+01:002016-05-16T19:08:48.583+01:00Hey Jon Webster or anyone, figured out the low vol...Hey Jon Webster or anyone, figured out the low volume output or gain pot cutting out a little past half way?Anonymoushttps://www.blogger.com/profile/09742051605011549480noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-69522883074120499742014-08-01T23:13:08.221+01:002014-08-01T23:13:08.221+01:00I built this one today and it fired up first try b...I built this one today and it fired up first try but it's very dark sounding and there doesn't seem to be much of a tonal sweep when turning the treble control. Fully CC is slightly more bassy, fully CW is slightly brighter, but the difference is barely audible, and the full sweep is much muddier than the bypassed signal. Gain sweep seems normal. Not much volume on tap... I understand that this one is not as loud as the charge pump version but even dimed there's only a slight boost from unity volume. Any ideas?Anonymoushttps://www.blogger.com/profile/06010879231532296608noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-34019014863466807842014-06-11T08:06:08.900+01:002014-06-11T08:06:08.900+01:00Correct :o)Correct :o)IvIarkhttps://www.blogger.com/profile/08416945174853142251noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-19953600765247808422014-06-11T05:28:25.020+01:002014-06-11T05:28:25.020+01:00Hi _
In most schematics and layouts they use a ma...Hi _<br /><br />In most schematics and layouts they use a matching pair. So D1 and D2 are both OA91 or 1N277. No one is 100% sure what diodes are in the original but Mark is suggesting these two varieties come very close. You can stick in whatever combo you want though. Some people swear BAT41s are even better or 1N34A or a mix of any.<br /><br />I'm no dual gang aficionado but if a dual gang pot is really just two normal pots together I doubt it makes any difference which row you use for which as long as you get lugs 3-2-1 correct on each pot. Dual gangs are often used for L and R stereo functions so each pot needs to work identical even though it's one giant pot. Happy to be corrected cos all of this statement is a guesstimate. <br /><br />:)<br /><br /><br /><br /> <br />chumbox https://www.blogger.com/profile/08378022143034035602noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-79175621434907031032014-05-28T13:56:58.440+01:002014-05-28T13:56:58.440+01:00Thanks for the reply. IC2 escaped down the gap bet...Thanks for the reply. IC2 escaped down the gap between the floorboards yesterday so rather than pull the floor up i'm going to order another one in. Any 2262 variant I should be aiming towards?<br /><br />Double-checked that double link and the upper part of it had no continuity with the lower part, resoldered the connection adjacent to teh 47u cap and now seem to be getting consistent voltages across the IC2 socket.<br /><br />Voltage between gain lug 2 and ground (both channels) is 4.72v<br /><br />Thanks for the tip off, really helpd a newbie narrow things down.Anonymoushttps://www.blogger.com/profile/00802332827273694362noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-33464527333170614802014-05-28T13:29:11.717+01:002014-05-28T13:29:11.717+01:00This comment has been removed by the author.Anonymoushttps://www.blogger.com/profile/00802332827273694362noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-72126590327347886212014-05-26T14:46:25.666+01:002014-05-26T14:46:25.666+01:00IC1 looks ok apart from maybe pin 7 being a little...IC1 looks ok apart from maybe pin 7 being a little low, but IC2 is wrong on so many levels. Pins 3 and 5 are connected to vref via a link and so should be at half the supply voltage, which is provided by the 2 x 27K resistors that connect from vref to supply and ground, making a voltage divider. You're getting different readings at pins 3 and 5, and that just can't happen if the links are connected as shown. Have you put the double link where it is shown next to D3? What voltage are you getting between Gain 1 lug 2 and ground?IvIarkhttps://www.blogger.com/profile/08416945174853142251noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-40820513554225469702014-05-26T14:31:14.277+01:002014-05-26T14:31:14.277+01:00Forgot to say, thanks for a great blog!Forgot to say, thanks for a great blog!Anonymoushttps://www.blogger.com/profile/00802332827273694362noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-11052629024825132042014-05-26T14:28:10.450+01:002014-05-26T14:28:10.450+01:00Update on this, I'm using a TLC2262CP for IC2,...Update on this, I'm using a TLC2262CP for IC2, is there another 2262 variant I should be using instead (2262AIP?) voltages are all over the place:<br /><br />IC2<br />Pin 1: 0-47.5mV (so far, gradually rising), <br />Pin 2: 2.81V<br />Pin 3: oscillating really fast<br />Pin 4: 0v<br />Pin 5: 0-175mV (and rising...)<br />Pin 6: 0-1.87V (and rising...)<br />Pin 7: 0-3.5V (and rising...)<br />Pin 8: 9.48V<br /><br />Also, IC2 seems really wide open to interference - hovering a finger anywhere near it produces a loud hum.<br /><br />Here are my IC1 readings, if useful...<br />1: 4.12V<br />2: 4.12V<br />3: 3.32V<br />4: 0V<br />5: 3.14V<br />6: 3.82V<br />7: 1.31V<br />8: 9.48VAnonymoushttps://www.blogger.com/profile/00802332827273694362noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-80206738838831675382014-05-18T18:37:13.108+01:002014-05-18T18:37:13.108+01:00Can anyone help me with this build? Signal is good...Can anyone help me with this build? Signal is good fot a couple of seconds when power connected but then futzes down to a rasp and then quiet clean signal. The gain pot then seems to die off about half way towards maximum gain. Can't find any shorts or bridges in the circuit. Shorting out one of the 47uF electrolytics momentarily restores gain but I'm note entirely sure where to go with that. Anonymoushttps://www.blogger.com/profile/00802332827273694362noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-35725079900608058352014-05-08T02:55:36.938+01:002014-05-08T02:55:36.938+01:00any sutable subs for the tlc2262 ? ... can't f...any sutable subs for the tlc2262 ? ... can't find them locally and kind of in a hurry so ordering them isn't an option (for now) ... mirosol said he "didn't notice anything different soundwise when comparing TLC2262 and TL072" ... but is this with both ic's beeing the same? I can find the normal bunch around here - 072, 082, 4558, 4559, 4580.Anonymoushttps://www.blogger.com/profile/04188636303750683037noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-28804407980015084092014-04-15T12:24:50.848+01:002014-04-15T12:24:50.848+01:00The zener doesn't matter, in fact you could sn...The zener doesn't matter, in fact you could snip it out and it wouldn't change anything. Post all the IC voltages to see if that gives us any cluesIvIarkhttps://www.blogger.com/profile/08416945174853142251noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-54205976606883906172014-04-15T12:05:02.835+01:002014-04-15T12:05:02.835+01:00I'm going crazy with this build....
I am a nov...I'm going crazy with this build....<br />I am a novice, I just copy what i see and am learning every build. Most of the builds work perfectly.<br />With the klon I started with the simplified trua bypass, didn't work.<br /><br />Then the one with the one with the icl7660S true bypass, nothing again.<br /><br />For the 390N I used two paralel caps. for the 422k resistor I just user a 430K.<br />For the zener I used a 12V 1,3 W Could that be the problem???? <br />The parts list says a 12V 500mW.... A 1n4742 is not available where I live.<br />I leodijhttps://www.blogger.com/profile/03354312954701379230noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-14415556408135636392014-03-17T11:08:06.949+00:002014-03-17T11:08:06.949+00:00The layout drawing shows the input between the 9v ...The layout drawing shows the input between the 9v and the LED leads. The last note on the drawing reads "Volume 2 to output". The rest of what you need is here-> http://tagboardeffects.blogspot.com/2012/02/offboard-wiring.htmlAnonymoushttps://www.blogger.com/profile/00991005180108399367noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-79923116348467038522014-03-16T22:07:44.788+00:002014-03-16T22:07:44.788+00:00Okay I hate to sound like I have no clue what I...Okay I hate to sound like I have no clue what I'm doing, but I don't think I do. So the Input goes to the middle pin on the switch? Where is the output? off of the volume pot?Anonymoushttps://www.blogger.com/profile/03444464880445539018noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-62076873285519335902014-03-16T18:11:24.240+00:002014-03-16T18:11:24.240+00:00Thank you for the hint ;-)Thank you for the hint ;-)Anonymoushttps://www.blogger.com/profile/07380895582780746866noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-79985970847527545342014-03-16T17:01:10.980+00:002014-03-16T17:01:10.980+00:0022 will fit in with the edges filed down22 will fit in with the edges filed downIvIarkhttps://www.blogger.com/profile/08416945174853142251noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-56189763125626719912014-03-16T17:00:12.978+00:002014-03-16T17:00:12.978+00:00The zener will drop the voltage so yes if you want...The zener will drop the voltage so yes if you want to run it at 18V don't bother with it. Make sure the ICs you're using can handle it though, I have shown a TLC2262 here which has a maximum voltage of 16V which is why I kept the zener in the layout.IvIarkhttps://www.blogger.com/profile/08416945174853142251noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-6793292735164435122014-03-16T16:41:06.294+00:002014-03-16T16:41:06.294+00:00D3 1n4742 = 12v Zener diode? Can I run this pedal ...D3 1n4742 = 12v Zener diode? Can I run this pedal @18v with such a diode in D3?Anonymoushttps://www.blogger.com/profile/07380895582780746866noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-48386698606893696652014-03-10T01:30:38.788+00:002014-03-10T01:30:38.788+00:00Hey just trying to recall for the life of me what ...Hey just trying to recall for the life of me what width vero will fit in a 1590B? Is it 21 columns/rows with the edges filed?<br /><br />chumbox https://www.blogger.com/profile/08378022143034035602noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-25393097527704297792014-02-23T12:43:42.666+00:002014-02-23T12:43:42.666+00:00Hi,
can I use 1n270 instead of 1n277 ?
or even 1n...Hi,<br /><br />can I use 1n270 instead of 1n277 ?<br />or even 1n34a?...<br />thanksAnonymoushttps://www.blogger.com/profile/07594089937166037589noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-25868748357588175912013-11-25T21:30:27.767+00:002013-11-25T21:30:27.767+00:00Found the problem. Forgot to connect the ground w...Found the problem. Forgot to connect the ground wire on the 3PDT switch. Unit is working great now and I am getting plenty of output from it. Originally built this for a friend but am going to have to build another one to add to my pedal board.DPM309https://www.blogger.com/profile/12938134141299881540noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-90021882253857723152013-11-22T01:45:34.896+00:002013-11-22T01:45:34.896+00:00This circuit could also really use an additional f...This circuit could also really use an additional filter cap for the supply voltage. I put a 220uf in, and it helped the hum from a wall-wart significantly. <br />Also, the 100k resistor on the bottom right of the board can be increases a little to get a bit more output, right? Anonymoushttps://www.blogger.com/profile/11219963355164228612noreply@blogger.com