en (c) Copyright 2007 by phpBB3 RSS2 Syndication Mod by Manchumahara(Sabuj Kundu) 1 Rozz Dead Heat <br /> by Manfred (Posted Today, 16:56)<br/><br /> Thanks for your great drawing!<br /><br /><br /> <a href="">Read the main topic related to this post</a><hr /> Today, 16:56 Boss - DC-2 Dimension C <br /> by aionios (Posted Today, 13:58)<br/><br /> I don't think this has been mentioned yet in this thread, but here is a much easier way of building a DC-2:<br /><!-- m --><a class="postlink" href=""> ... -c-chorus/</a><!-- m --><br /><br />The Topopiccione ticking issue is entirely due to the layout. The Blueshift follows very good layout principles - the LFO and BBDs are on a completely separate PCB from the audio, star grounded to the jack, so about as isolated as you can get. I haven't had any reports of anyone experiencing LFO ticking so far.<br /><br /><br /> <a href="">Read the main topic related to this post</a><hr /> Today, 13:58 Conn Multi-vider (Silverbox) <br /> by pinkjimiphoton (Posted Today, 00:55)<br/><br /> these were designed for brass... there was a pickup and preamp (i think) assembly before the multivider.<br /><br />the soprano is indeed an octave up and should be fairly farty sounding. its basically like a division down organ, it fuzzes and gives ya various octaves.<br /><br />always wanted to fuck around with one of these. its likely not broken.<br /><br />first thing i'd do would be replace every single electro and tant cap on the board.<br />then it will probably work.<br />if not, use an audio probe and multimeter. the ge q's don't just go bad, and i think these were using silicon by the time they got this far<br /><br /><br /> <a href="">Read the main topic related to this post</a><hr /> Today, 00:55 Joyo Ultimate Octave: how to make it useable? <br /> by jneilson (Posted Yesterday, 22:57)<br/><br /> I have a Voodoo Octave I plan on modding. While I'm working on it I was wondering if it would be possible to modify the tone control to use an expression pedal with it? It gives a nice swooshy sound when you turn it back and forth.<br /><br /><br /> <a href="">Read the main topic related to this post</a><hr /> Yesterday, 22:57 Arbiter - Treble Bass Fuzz Face <br /> by roseblood11 (Posted Yesterday, 19:50)<br/><br /> Veroboard layout by mirosol: <br /><!-- m --><a class="postlink" href=""> ... e.html?m=1</a><!-- m --><br /><br /><br /> <a href="">Read the main topic related to this post</a><hr /> Yesterday, 19:50 Death by Audio - Apocalypse <br /> by Bazzu69 (Posted Yesterday, 18:49)<br/><br /> ...I think is a propblem of the bias net...doesen't matter if the transistor is mps or bc, isn't a problem of beta, of course more is the beta and more is better, because is a emitter follower. Try to change the value of the 22k with 910k, probably you put the transintor in no saturation zone...sorry for my english, hope you can understand what I said...<br /><br /><br /> <a href="">Read the main topic related to this post</a><hr /> Yesterday, 18:49 Xotic - BB Preamp <br /> by Intripped (Posted Yesterday, 16:22)<br/><br /> Ok, thanks!<br />I'll give it a try for sure<br /><br />Cheers<br /><br /><br /> <a href="">Read the main topic related to this post</a><hr /> Yesterday, 16:22 JFET boost <br /> by Nocentelli (Posted Yesterday, 13:46)<br/><br /> Verified, and I'm quite pleased with the result: A 1k<span style="text-decoration: underline">C</span> gain pot is highly recommended for smooth transition from totally clean to pleasantly gritty throughout the whole rotation. If i played a strat/tele all the time I might be tempted to omit the gain pot (jumpered flat-out) and just use the volume pot to adjust the grit. I'm going to try it out again in the near future with some other FETs as I still have some decent spec'd thru-hole 2N5457s left.<br /><br /><div class="inline-attachment"><!-- ia0 -->FETboost_vero_nocentelli.gif<!-- ia0 --></div><br /><br /><br /> <a href="">Read the main topic related to this post</a><hr /> Yesterday, 13:46 clone xotic bb preamp problem <br /> by snofla1900 (Posted Yesterday, 12:52)<br/><br /> But how did you fix it , was the problem you solved ?<br /><br /><br />Alf<br /><br /><br /> <a href="">Read the main topic related to this post</a><hr /> Yesterday, 12:52 cabsims... and even more cabsims <br /> by phatt (Posted Yesterday, 12:00)<br/><br /> <blockquote><div><cite>J0K3RX wrote:</cite>Mooer has a new cabsim pedal coming out called Radar... If ii's in the same price range as all of their pedals then my guess is around $100. With the features packed into this little thing and the price it really makes me wonder why anyone would even want to tinker with building these 1 trick analog sims..?<br /><!-- m --><a class="postlink" href=""></a><!-- m --><br /><br />I kinda feel the same way about the preamp simulators. I think Mooer has probably the best preamp/amp simulators available today and the prices are just unbeatable... You can get an Engl Blackmoore, 5150/5153, JCM900, Diezel etc with all of the quality accuracy that you would find in an Axe-FX unit....</div></blockquote><br /><br />Thanks for the link,,Interesting pedal. <img src="./images/smilies/icon_thumright.gif" alt=":thumbsup" title="thumbs up" /> <br /><br />I got a little excited until I read the line *20/20 bandwidth*.<br />Worth note;<br />Years back I owned a Quadraverb which at the time was one of the most Expen$ive units on the market and also claimed 20/20 Bwidth.<br />Drove me nuts trying to work out why it never sounded quite right. <br />Long story short; By inserting a simple ANALOG Cab Sim directly After the Qverb it finally sounded convincing.<br />I don't know the terminology to use here but some of those digi circuits seem to introduce a lot of crud. The response curve might be right but the excess Bwidth seems to allow other crap to pass through which somehow interferes with the result. My cab sim trick did nothing if inserted *Before* the Qverb.<br />I have the same trouble with those all in one pedal boards. I recently repaired a Boss GT100 and found the same problem. I still have that very same Cabsim I built on perf board years back so I pulled it out from my bottom drawer and tried the same trick and sure enough it substantially improved the outcome. <img src="./images/smilies/icon_cool.gif" alt="8)" title="Cool" /> <br />These are just my observations so YMMV.<br /><br />Hey I know what you mean about the bewildered dog syndrome,, I've done the same thing a few times and had to start over. <img src="./images/smilies/mw_slap.gif" alt=":slap:" title="Slap" /> <br />Phil.<br /><br /><br /> <a href="">Read the main topic related to this post</a><hr /> Yesterday, 12:00 WTB - Behringer FCB1010 part <br /> by Ice-9 (Posted Yesterday, 10:39)<br/><br /> In that case you may just have to make your own from some rubber sheet or look on ebay for a non working unit that you can strip the rocker pedal from.<br /><br /><br /> <a href="">Read the main topic related to this post</a><hr /> Yesterday, 10:39 Supro Drive <br /> by thehallofshields (Posted Yesterday, 00:44)<br/><br /> The designer is claiming he has actually achieved magnetic saturation of the transformer. I'm beyond skeptical.<br /><br /><br /><blockquote class="uncited"><div>No other pedal sounds more like a real Supro amp than the Supro Drive. This groundbreaking analog pedal re-creates the circuitry of a Supro amp, from end to end, including an <span style="font-weight: bold">actual output transformer</span>. As the Supro sound has gained widespread popular recognition as a pillar of classic rock guitar tone, numerous amp and pedal companies claim to have captured our coveted sound by cloning the original Supro preamp, in stompbox format. They all got it wrong! The real tone of a genuine Supro amp has everything to do with the unique phase inverter design, Class A power amp section and the<span style="font-weight: bold"> magnetic saturation</span> that occurs via the old-school transformers found in these vintage tone machines. In short, the iconic sound of a Supro amp being pushed into overdrive has everything to do with the <span style="font-weight: bold">POWER AMP</span>.</div></blockquote><br /><br /><br /> <a href="">Read the main topic related to this post</a><hr /> Yesterday, 00:44 PAL Fx JCM 800 Emulator <br /> by roseblood11 (Posted 20 Oct 2017, 18:39)<br/><br /> It would be great to have a pcb with the option to build many different circuits that are based on Marshall designs.<br />Maybe could sell them?<br /><br /><br /> <a href="">Read the main topic related to this post</a><hr /> 20 Oct 2017, 18:39 Analogman Chorus Schematic + Mods <br /> by The Rotagilla (Posted 18 Oct 2017, 20:34)<br/><br /> FWIW, Analogman has stated that the original EH schematic (and ones that were based on it) contained errors. I've always meant to get around to tracing one out but life usually has other plans. Also keep in mind that he swore the King of Tone and Bigfoot/Fargen JW-40 drive circuit were original designs. <img src="./images/smilies/icon_rolleyes.gif" alt=":roll:" title="Rolling Eyes" /><br /><br /><br /> <a href="">Read the main topic related to this post</a><hr /> 18 Oct 2017, 20:34 MOOG Moogerfooger MF-103 12-Stage Phaser <br /> by KevinMitchell (Posted 18 Oct 2017, 15:53)<br/><br /> I'm back. Sadly dropbox took all public files down. I may have my own MF103 next week. If I get it I'd actually like to redraw the schematic in full and a copy of the PCB for a true clone. From there I'll very likely work up a downscaled - 6 stage, true bypass clone to fit in a 1590B enclosure.<br /><br />The project has not died <img src="./images/smilies/icon_cool.gif" alt="8)" title="Cool" /><br /><br /><br /> <a href="">Read the main topic related to this post</a><hr /> 18 Oct 2017, 15:53 Anyone successfully tried the Coda Effects relay switching? <br /> by Zokk (Posted 18 Oct 2017, 09:42)<br/><br /> Hello<br /><br />please could you explain why you've removed the freewheel diode on the relay?<br />Usually this diode is mandatory to protect the relay against feedback voltage.<br /><br />Thanks.<br /><br /><br /> <a href="">Read the main topic related to this post</a><hr /> 18 Oct 2017, 09:42 Parallel Box <br /> by snk (Posted 17 Oct 2017, 16:54)<br/><br /> Hello<br />Thank you for your answer, and sorry for the late reply, for some reason i didn't get the reply notification.<br /><br /><blockquote class="uncited"><div>In all the drawings, ground relies on getting its connection through the chassis. I wouldn't count on always getting a reliable connection that way, so I would simply run wires connecting all ground points together inside the box.</div></blockquote><br />In the meantime, i have updated the design with grounds wires in a "spider web" configuration. <br />(there is an error with the potentiometer's label, which are swapped).<br /><img src="!AzRGY46CMQ5ttNmxEhSklLMnfSbGr5-j3HLOaW03iMWdvU9DElGzwhS0skkXPA_yOXKowa1Eijqq5XGLcvwWQpVD2zlcP1dJDSH95l4SiFCctR5_nEKsbr7H2IXNRkfveL0PujYrjCQCtxsJQ_A4WhD5AJU2c4hzDc1xD2OeHUZ9WE5WcDVRnqlMUSwBOgAUmejZ66RYmfzUIhb1W40PqVm3cdIP6pefThIavKU1xHAUmq9klFLoFbBUucWLSD1eBWPQhQCjgGodbLil-MEg7YTsl0hL_lJdpioz95Gw40lN-ACZjpCyhsG47UHm7Tnp9a8UlNTPoymNEikQuDjg7L_x8b2qIfgRS_aC6WprDSPbGZDiMywNRF-WiJq8esDyzaHVUjWXUZ7r&box_client_name=box-content-preview&box_client_version=1.13.0" alt="Image" /><br /><br /><blockquote class="uncited"><div>The effects send jack doesn't mix any signals, so you don't need the extra resistor there.</div></blockquote><br />Ok, but does it make any harm to the circuit if i keep it ? (not that i want to keep it, but i'm trying to understand better the consequences).<br /><br /><blockquote class="uncited"><div>Resistance values are very high, which makes sense if you are running directly from a guitar. If the inputs are buffered at least once, I would make the pots and series resistors 5-10 times smaller.</div></blockquote><br />Ok, interesting point.<br />I borrrowed the resistor values from the Beavies Audio schematic.<br />500k for the potentiometers is used to avoid treble loss.<br />I am planning to use it mainly with synths and drum machines (so everything should be line level), but maybe also with a passive electric piano so, a bit like a guitar).<br />Therefore, my questions would be :<br />- Is there any "once size fits all" resistor value (suitable for both synths and passive instruments) ?<br />- Is there any issue or risk by keeping these values (like more noise, hum isues, etc) ?<br /><br /><br /> <a href="">Read the main topic related to this post</a><hr /> 17 Oct 2017, 16:54 LAKLAND LH-3 ONBOARD BSS PREAMP <br /> by george giblet (Posted 17 Oct 2017, 08:58)<br/><br /> V1.0 to V1.1 update.<br /><br />I might be able to add a bit more info.<br /><br />In ChicagoMike's post on he states,<br /><br />40Hz bass<br />6Khz Treble<br /><br />however, he doesn't give a +/- dB spec.<br /><br />I don't know where those specs originate from, but, if we assume ,<br />1) Bass/treble spec +/-15dB (a reasonable assumption)<br />2) Set the mid frequency to the default 600Hz <br />3) Use the C10=33n, C4A=27n version of my mid cap options for 600Hz<br /><br />when we choose,<br />- Bass cap C2 = 68n, and<br />- Treble cap C11 = 8n2<br /><br />Then surprisingly we get ChicagoMike's specs!<br /><br />Bass: +15dB at 43Hz<br />Treble : +15dB at 6kHz<br /><br />With C11 = 8n2 the mid-caps need a little tweak<br />to get the correct frequency centres,<br /><br />275Hz: C4 = 120n (19.8dB @ 276Hz)<br />600Hz: C4A = 27n (12.9dB @ 583Hz)<br />900Hz: C4B = 12n (8.7dB @ 893Hz)<br />1100Hz: C4C = 8n2 (6.9dB @ 1.1kHz)<br /><br /><br />Maybe solved?<br /><br /><br /> <a href="">Read the main topic related to this post</a><hr /> 17 Oct 2017, 08:58 Southbeach Bass Preamp (2-band) <br /> by george giblet (Posted 17 Oct 2017, 02:10)<br/><br /> A 2-band bass preamp with good bass frequencies for this era.<br /><br />This one wasn't on my "to do" list but I had enough info to put something together.<br /><br />From what I can work out the Vcc/2 biasing is like this.<br /><br />Any comments or corrections welcomed.<br /><br /><br /> <a href="">Read the main topic related to this post</a><hr /> 17 Oct 2017, 02:10 Width of Track <br /> by J0K3RX (Posted 17 Oct 2017, 01:53)<br/><br /> <!-- m --><a class="postlink" href=""></a><!-- m --><br /><br /><br /> <a href="">Read the main topic related to this post</a><hr /> 17 Oct 2017, 01:53