tag:blogger.com,1999:blog-6847048658257278783.post1045348193515773426..comments2024-03-29T01:36:12.851+00:00Comments on Guitar FX Layouts: Wampler Black 65IvIarkhttp://www.blogger.com/profile/08416945174853142251noreply@blogger.comBlogger188125tag:blogger.com,1999:blog-6847048658257278783.post-23388367084153854122023-07-02T00:08:00.845+01:002023-07-02T00:08:00.845+01:00I hope some sees this and gives me a clue. I made ...I hope some sees this and gives me a clue. I made this pedal as a preamp followed by a tpa3118 power amp board straight into a Jensen C12K. It sounds like heaven. Almost like a real blackface. One small problem thou is that I really need more treble. Most people wouldn't need this because they use an amp. Is there any way to achieve this? GiorgosZiotashttps://www.blogger.com/profile/15484925263800089154noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-65831652200522877822022-04-18T04:07:41.780+01:002022-04-18T04:07:41.780+01:00Has anyone try 18v to see if it gets more head roo...Has anyone try 18v to see if it gets more head room like the dirty little secret?Anonymoushttps://www.blogger.com/profile/15458324323731802223noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-49315894583047102242021-06-18T07:18:30.858+01:002021-06-18T07:18:30.858+01:00thank you! sorry for the double post!thank you! sorry for the double post!pufffinhttps://www.blogger.com/profile/00042875634673862373noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-3842562863447901272021-06-16T10:06:57.504+01:002021-06-16T10:06:57.504+01:00Yes that’s correct Yes that’s correct IvIarkhttps://www.blogger.com/profile/08416945174853142251noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-31776902905155296682021-06-16T10:02:26.108+01:002021-06-16T10:02:26.108+01:00Treble 1 & bass 2 & wired on a single wire...Treble 1 & bass 2 & wired on a single wire?pufffinhttps://www.blogger.com/profile/00042875634673862373noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-1628588885863263712021-06-16T09:58:13.294+01:002021-06-16T09:58:13.294+01:00Treble 1 & Bass 2 & 3 from a single wire?Treble 1 & Bass 2 & 3 from a single wire?pufffinhttps://www.blogger.com/profile/00042875634673862373noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-79166032728041626932020-11-27T15:50:20.866+00:002020-11-27T15:50:20.866+00:00So after my third attempt Ive finally got this nai...So after my third attempt Ive finally got this nailed and it sounds great, but I'm not really bothered about the gain switch though and wondered what I have to do to remove it, leaving only the standard mode. What is the neatest way to do that?Ben Spinkshttps://www.blogger.com/profile/16961902241917582699noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-32480940037552092712020-03-15T21:24:03.172+00:002020-03-15T21:24:03.172+00:00Pedal works very good. I replaced 10ohm resistor w...Pedal works very good. I replaced 10ohm resistor with 560ohm and have got 4,6v , 4,2v and similar all about. Replaced one 5k6 with 4k7 to get closer voltage. I'll rise 560 to 600ohm and that's all. I have bad choice of pots here. No log pots no 25k but 20k for tone. No problem for future but for now black 65 copy is realy pretty sounding. Clean is almost without overdrive and boost is awesome. It's close to spirit of fender. I played one vibrosonic with JBL long time ago. Good luck with solderingAnonymoushttps://www.blogger.com/profile/03031454143446757229noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-83681675097606656462019-04-09T06:31:47.503+01:002019-04-09T06:31:47.503+01:00I kinda doubt... J201's and other Jfets are of...I kinda doubt... J201's and other Jfets are often everywhere in readings meaning: they're not consistent at all (people will often claim they got fakes, but I kinda doubt that too).Iagohttps://www.blogger.com/profile/13478141026000247956noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-17768481021059922972019-02-14T15:56:50.380+00:002019-02-14T15:56:50.380+00:00hi everyone, in order to get the voltage at the dr...hi everyone, in order to get the voltage at the drains within the recommended range I had to use resistors (combinations of them) of ~ 47K, 33K and 20K. Is that ok or is that too much resistance? I am concerned that this might be the sign of something wrong somewhere else in the circuit? thanks for any inputStefanohttps://www.blogger.com/profile/05686161991812820019noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-77014232514301664782018-08-15T06:51:00.585+01:002018-08-15T06:51:00.585+01:00My 2N5457 have much more gain than my J201. I fidd...My 2N5457 have much more gain than my J201. I fiddle the source resistor and use fetzer calculator and i did everything to make the j201 sounds louder and bigger but my 2N5457 has much more gain. I'm really confused becausw according to every forum i've read, J201 has much more gain but this is not what i observe. I change different j201's but all have the same result. I also get the right voltages but still the same. Do you have any idea what had happened?John Govanhttps://www.blogger.com/profile/07227486430812560037noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-42881799857000594752017-12-24T16:39:43.241+00:002017-12-24T16:39:43.241+00:00I might try that, just out of curiosity... Probabl...I might try that, just out of curiosity... Probably, it will result in less gain and in less volume too. Iagohttps://www.blogger.com/profile/13478141026000247956noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-42878537876962145322017-10-16T23:43:07.572+01:002017-10-16T23:43:07.572+01:00Did somebody uses MPF102 to this pedal? Godd resul...Did somebody uses MPF102 to this pedal? Godd results in clean sound?Anonymoushttps://www.blogger.com/profile/02727639460158555159noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-5604644302668378022017-09-10T19:22:17.753+01:002017-09-10T19:22:17.753+01:00Ok...done...resistor on positive lead should not b...Ok...done...resistor on positive lead should not be more than 1.5k if you want it to work properly...so it is needed to increase drain resistors on each j201 to meet 4-something volts...then it roars...😀Anonymoushttps://www.blogger.com/profile/01244656655273157225noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-70682866414370246112017-09-09T21:58:24.516+01:002017-09-09T21:58:24.516+01:00Hi. My pedal is having just a hint of gain with th...Hi. My pedal is having just a hint of gain with the gain all the way up on the normal, and little bit more on the boost chanel. Also with adjusting drain voltage from 3.0v to 5.5v makes too little difference just litle more volume not gain. All drain voltages are identical. Only thing I didn't do corectly was that I put two 220k resistors instead of 240k on the layout...can that make all the difference?Anonymoushttps://www.blogger.com/profile/01244656655273157225noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-65790833553293425782017-05-12T23:32:46.166+01:002017-05-12T23:32:46.166+01:00it is a 10R asp er the schematic.it is a 10R asp er the schematic.johnkhttps://www.blogger.com/profile/00643996045674470081noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-21450019327627020242017-05-12T23:24:30.568+01:002017-05-12T23:24:30.568+01:00Hi, What is the resistor in voltage section 10R or...Hi, What is the resistor in voltage section 10R or 100R ? I think it should be 100RVahiDhttps://www.blogger.com/profile/07265710622184871503noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-12968104573124934582017-04-19T16:23:57.777+01:002017-04-19T16:23:57.777+01:00Very fun pedal! To get ~4.4v, my bias resistors we...Very fun pedal! To get ~4.4v, my bias resistors were all around 15K. Time to built another with a stomp for the gain switch.Brad Grahamhttps://www.blogger.com/profile/09343693258695190677noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-24772591519919576732017-04-16T02:06:07.853+01:002017-04-16T02:06:07.853+01:00One of the best OD's I've ever played and ...One of the best OD's I've ever played and it's not even boxed yet. It's less noisy (even unboxed) and, in my opinion, better sounding and less finicky than the ROG Azabache. Also, the 3 band EQ makes it much more useable/easy to adjust to your rig/tone you want to hear. Biased all my transistors to about 4v using all 18k resistors in sockets. Ace circuit. Iagohttps://www.blogger.com/profile/13478141026000247956noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-68243364498366929562017-04-16T01:58:51.629+01:002017-04-16T01:58:51.629+01:00I see no reason why you should mess with the volta...I see no reason why you should mess with the voltage expecting more gain. More voltage will probably give you less gain. Less voltage would probably make the pedal sound sputtery or even mute. Btw, gain stage 1 is for the gain boost, so it's not relevant here. Iagohttps://www.blogger.com/profile/13478141026000247956noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-92224772211392471812017-02-13T09:54:01.545+00:002017-02-13T09:54:01.545+00:00Hi, great forum here! I do have an original Wample...Hi, great forum here! I do have an original Wampler Black 65, my first mod is to replace the 100k bass pot to a linear one. The log type is more like an on/off switch to my ears. I also will try to increase the gain. I measured 3.1 - 3.3V at the JFETs. As I learned here, it can be done by tweaking the 5.6K/1K resistors. But on which of the four gain stages, on all of them? Or is it more easy to tweak the 10R comming from the battery? <br />Thanks & greetings from Vienna/Austria - GeryGeryGuitarhttps://www.blogger.com/profile/13351442098129559448noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-52101461942952729062017-02-01T22:39:05.171+00:002017-02-01T22:39:05.171+00:00OMG - the first project i was able to get it work ...OMG - the first project i was able to get it work - Thanks!Anonymoushttps://www.blogger.com/profile/17871923995110260258noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-79484449361327719322016-12-27T22:22:51.749+00:002016-12-27T22:22:51.749+00:00Awesome! Got this one working today. Bit of a nerv...Awesome! Got this one working today. Bit of a nerve-wracking build for a beginner as it's quite a packed board, but it seems I got away with it. It doesn't help that the 1n5s I got on eBay were about 5 times bigger than expected... but that means they have mojo, right?<br /><br />FWIW I picked 4 random J201s out the bag and biased them at 4.5v: 3 out of 4 were perfect at 5k6, the last one needed slightly less. Based on other comments, I guess that just shows how variable these components can be.<br /><br />I know it's an old post and you might not see this but I do want to thank you for this site. I'm learning so much, and having so much fun. And -- as I keep telling my wife -- saving so much money :-)helveticathttps://www.blogger.com/profile/16609942218165613991noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-24852957301071985162016-11-11T13:09:37.501+00:002016-11-11T13:09:37.501+00:00Is the line of volime 3 according to the layout? O...Is the line of volime 3 according to the layout? Or is it one row below?minituahttps://www.blogger.com/profile/09040002995716266530noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-38276537767855839492016-11-11T13:09:35.948+00:002016-11-11T13:09:35.948+00:00Is the line of volime 3 according to the layout? O...Is the line of volime 3 according to the layout? Or is it one row below?minituahttps://www.blogger.com/profile/09040002995716266530noreply@blogger.com