tag:blogger.com,1999:blog-6847048658257278783.post1509802720025357812..comments2024-03-29T01:36:12.851+00:00Comments on Guitar FX Layouts: Sunn Model T (1st Gen) PreampIvIarkhttp://www.blogger.com/profile/08416945174853142251noreply@blogger.comBlogger260125tag:blogger.com,1999:blog-6847048658257278783.post-80171107065953422622024-02-28T20:09:22.320+00:002024-02-28T20:09:22.320+00:00Hey, is there a way to mod this circuit to put out...Hey, is there a way to mod this circuit to put out line level? I'm using one into a 70s traynor pm300 power amp, but there's a fair amount of volume lossVerminlordhttps://www.blogger.com/profile/13726178499993565471noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-4572496927611165852023-12-09T03:16:47.360+00:002023-12-09T03:16:47.360+00:00I made the second layout and confirmed that it pro...I made the second layout and confirmed that it produces sound, but the bass is too loud and the sound is very unclear. Also, setting the treble pot to 0 will increase the overall volume. Is there any solution?michiehttps://www.blogger.com/profile/13248688829429130297noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-3153012416409435082023-12-07T16:53:43.816+00:002023-12-07T16:53:43.816+00:00this sounds amazing but im unsure if the bass knob...this sounds amazing but im unsure if the bass knob is actually doing anything.EMedlinhttps://www.blogger.com/profile/11753385848091879615noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-55075022808335565332022-04-21T08:58:55.400+01:002022-04-21T08:58:55.400+01:00Hi! If I increase the power supply voltage (19V), ...Hi! If I increase the power supply voltage (19V), do I need to modify BIAS values according to the voltage supplied? Thanks!Anonymoushttps://www.blogger.com/profile/03038714897471752533noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-87432404636081936222022-01-30T15:46:56.934+00:002022-01-30T15:46:56.934+00:00Any idea what biasing voltages would be for these ...Any idea what biasing voltages would be for these circuits if ran at 15v? Any idea how to calculate it or find ou besides just using my ears which I dont't trust?brandonhttps://www.blogger.com/profile/03115475661286750724noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-55211438983496220012022-01-29T15:27:23.414+00:002022-01-29T15:27:23.414+00:00Any idea what biasing voltages would be for these ...Any idea what biasing voltages would be for these circuits if ran at 15v? Is there a way to figure it out or should i use my ears (which is something I don't really wanna do, lol)?brandonhttps://www.blogger.com/profile/03115475661286750724noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-25077109779337564382022-01-29T15:23:16.045+00:002022-01-29T15:23:16.045+00:00Any idea how to bias these when using 15v input vo...Any idea how to bias these when using 15v input voltage? I don't trust my ears exactly. Also in what order should the be biased when going by ear. I really wish there was a way to figure out aproximate voltages.brandonhttps://www.blogger.com/profile/03115475661286750724noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-69650457814662965352020-04-08T12:54:15.538+01:002020-04-08T12:54:15.538+01:00Hey, how could I get the exact same circuit, but d...Hey, how could I get the exact same circuit, but ditch the toggle switch for two footswitches, the first being the Normal channel and the second being the Bright channel, made to work independently AND together (just Normal, just Bright, or both at the same time) ? <br /><br />Just wiring another switch seems to easy for it to really work... <br /><br />Thanks !dullmanhttps://www.blogger.com/profile/00250072289503487886noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-8933889888667864852020-03-23T22:11:53.037+00:002020-03-23T22:11:53.037+00:00Hi guys,
I finished this one a while ago but I onl...Hi guys,<br />I finished this one a while ago but I only got to make it look nice recently : https://imgur.com/a/91Mjtvh<br />I used it a lot as an almost clean preamp going directly into a cab sim afyer my amp died during recording sessions. At higher gain levels, it does a really good Model T impression !NoisyBenhttps://www.blogger.com/profile/08241536383231952508noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-74845938621129952912020-03-19T06:29:17.155+00:002020-03-19T06:29:17.155+00:00If using higher voltage what values should you bia...If using higher voltage what values should you bias the FETs into? With 6,5.v and 5.v or something else? The Q4 is obviously receiving a supplied voltage straight from the source. <br /><br />Ps. My build is running smoothly with SMD j201 and 9.v. Using the tone stack wiring No.1 (wiring 2 didnt work 4 me). Crazy bananahttps://www.blogger.com/profile/07219550690209523942noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-3746188291261630702020-02-13T08:33:39.936+00:002020-02-13T08:33:39.936+00:00This comment has been removed by the author.jameso)))https://www.blogger.com/profile/10796644581256784048noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-68616282911115727872020-02-12T20:04:02.714+00:002020-02-12T20:04:02.714+00:00This comment has been removed by the author.jameso)))https://www.blogger.com/profile/10796644581256784048noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-55578561065023689112020-01-25T17:50:59.145+00:002020-01-25T17:50:59.145+00:00just saw this!!! i'm on it!!!hahaaha!!!just saw this!!! i'm on it!!!hahaaha!!!<br />ξεναγός νεκρόποληςhttps://www.blogger.com/profile/13463939372683232133noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-42739505829854760972019-08-02T04:58:43.176+01:002019-08-02T04:58:43.176+01:00Bass 1 just have to go to Mid 3 and not to be conn...Bass 1 just have to go to Mid 3 and not to be connected with the 22nF capacitor as seen in Layout 2. Keep the layout 1 for tone it works according to original layout and Layout 2 has mistakes.Anonymoushttps://www.blogger.com/profile/10239982286046736536noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-58495861390724513432019-01-15T12:55:40.952+00:002019-01-15T12:55:40.952+00:00Also I used SMD J201s with adapter PCBs, wasn'...Also I used SMD J201s with adapter PCBs, wasn't as hard as I thought and it gave great results.NoisyBenhttps://www.blogger.com/profile/08241536383231952508noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-39446717351616464102019-01-15T12:52:20.227+00:002019-01-15T12:52:20.227+00:00Really glad I built this one, fitting the six knob...Really glad I built this one, fitting the six knobs into a 125B was a bit tricky but there wouldn't be fun otherwise !<br /><br />Recently, my amp died on me while I was finishing recording stuff for my band, I had to use this preamp with some speaker simulation software (and huge amound of fuzz) and it really did the job.<br /><br />Thanks for the layout !<br />https://imgur.com/a/qvAsKtZNoisyBenhttps://www.blogger.com/profile/08241536383231952508noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-4479504725673490212018-11-14T19:47:49.316+00:002018-11-14T19:47:49.316+00:00How was the effect of pairing the tda7293 with thi...How was the effect of pairing the tda7293 with this circuit?cacopandahttps://www.blogger.com/profile/17903314093674324849noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-69326665062990601602018-11-12T17:41:09.426+00:002018-11-12T17:41:09.426+00:00Thanks I willThanks I willEr cinesehttps://www.blogger.com/profile/08391568959323009452noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-77421270232565032392018-11-12T01:51:43.646+00:002018-11-12T01:51:43.646+00:00The electrolytic caps should just have - to ground...The electrolytic caps should just have - to ground. I would suggest opening a thread in the forum debugging section and take some pictures of the front and back of the board, and maybe someone else can spot an error.<br /><br />The forum is http://tagboardeffects.blogspot.com/p/forum.htmlAellinghttps://www.blogger.com/profile/11144959995844581323noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-58704471105628889692018-11-12T01:22:33.944+00:002018-11-12T01:22:33.944+00:00Right. It drives me nuts. I will check the caps, o...Right. It drives me nuts. I will check the caps, other than that I have no idea what to checkEr cinesehttps://www.blogger.com/profile/08391568959323009452noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-23146380903226616162018-11-12T00:49:09.697+00:002018-11-12T00:49:09.697+00:00Hmm, and are you sure you're putting the test ...Hmm, and are you sure you're putting the test lead to Drain on the FETs? Also the trimmers go from left to right Q1, Q3, Q2. Other than that I dunno what else it could be.Aellinghttps://www.blogger.com/profile/11144959995844581323noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-43292746813455152522018-11-11T21:36:37.560+00:002018-11-11T21:36:37.560+00:00The links are there, I can't find a mistake. I...The links are there, I can't find a mistake. I will check the caps on the source, other than that I have no idea what it is going onEr cinesehttps://www.blogger.com/profile/08391568959323009452noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-73031104424342743352018-11-11T21:36:00.408+00:002018-11-11T21:36:00.408+00:00This comment has been removed by the author.Er cinesehttps://www.blogger.com/profile/08391568959323009452noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-24001800834916128192018-11-11T16:22:57.014+00:002018-11-11T16:22:57.014+00:00Did you remember to add jumpers underneath the tri...Did you remember to add jumpers underneath the trimmers between rows A & B?Aellinghttps://www.blogger.com/profile/11144959995844581323noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-48088211842895199202018-11-10T17:16:47.033+00:002018-11-10T17:16:47.033+00:00I am having issues biasing the FETs. The trimmers ...I am having issues biasing the FETs. The trimmers do not allow to the voltage to go down, it remains around 9. The trimmers work, I have checked them, capacitor on the S are correctly orientated. The audio path has no issues, I have checked it bypassing the FETs. Any idea of what is going wrong? Is this symptomatic of a specific issue?Er cinesehttps://www.blogger.com/profile/08391568959323009452noreply@blogger.com