tag:blogger.com,1999:blog-6847048658257278783.post9091777667921153148..comments2024-03-29T01:36:12.851+00:00Comments on Guitar FX Layouts: Tycobrahe OctaviaIvIarkhttp://www.blogger.com/profile/08416945174853142251noreply@blogger.comBlogger112125tag:blogger.com,1999:blog-6847048658257278783.post-36552098064114323072021-01-27T16:31:16.709+00:002021-01-27T16:31:16.709+00:00Hi. I had same issue and it turned out that it is ...Hi. I had same issue and it turned out that it is a matter of first transistor Q1. I was building negative ground version and I left for Q1 MPSA18 NPN transistor and after research I replaced it by PNP 2n5088 and effect started to work. If you have some issue with Boost pot it could be also or wrong Q1 PNP or NPN depends of ground configuration or damaged transistor. Regards!Szlasthttps://www.blogger.com/profile/16184451986913237097noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-78478925552331188332020-11-26T16:26:39.953+00:002020-11-26T16:26:39.953+00:00Hi there, I'm not an expert, strated this octa...Hi there, I'm not an expert, strated this octavia as my 5th pedal:) Ihad pb to get my 500K LOG potentimeter for the volume. I have 100K lin as sapre. Could that work what mdoficiation has to be made if I change the value. Thanks for you great job and your help.Maxhttps://www.blogger.com/profile/09484524994772170796noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-27856807475621987962020-11-26T16:24:46.112+00:002020-11-26T16:24:46.112+00:00Hi there, I'm not an expert, strated this octa...Hi there, I'm not an expert, strated this octavia as my 5th pedal:) Ihad pb to get my 500K LOG potentimeter for the volume. I have 100K lin as sapre. Could that work what mdoficiation has to be made if I change the value. Thanks for you great job and your help.audrey&maxhttps://www.blogger.com/profile/01934269228851155866noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-62760400100919016802020-05-04T03:31:35.189+01:002020-05-04T03:31:35.189+01:00From a post at another build group, Phillip says: ...From a post at another build group, Phillip says: <br />"I haven't heard any difference between the 42TM022 and the 42TU011...I think some of their specs are slighly different and the 42TU011 is a little larger, but they both sound the same."<br />Source: https://www.diystompboxes.com/smfforum/index.php?topic=26094.0The_Peddlerhttps://www.blogger.com/profile/07267867702463011607noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-6048652514382221312020-05-02T14:51:43.270+01:002020-05-02T14:51:43.270+01:00Works great, thank you! Man, this thing makes a he...Works great, thank you! Man, this thing makes a hell of a noise - in a good way :)Frankhttps://www.blogger.com/profile/01346579582766099066noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-24176987237284554892019-01-28T12:35:18.434+00:002019-01-28T12:35:18.434+00:00Yes the diode life switch in the layout seems wron...Yes the diode life switch in the layout seems wrong,.you need to completly remove it from the circuit to work..also there's a slight difference between which diode you choose to bypass,.I might make mine interchangeable because there is a difference!Anonymoushttps://www.blogger.com/profile/16234551224955510424noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-25655893192769726212019-01-28T12:34:41.264+00:002019-01-28T12:34:41.264+00:00Yes the diode life switch in the layout seems wron...Yes the diode life switch in the layout seems wrong,.you need to completly remove it from the circuit to work..also there's a slight difference between which diode you choose to bypass,.I might make mine interchangeable because there is a difference!Anonymoushttps://www.blogger.com/profile/16234551224955510424noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-11576097871309550532018-12-05T23:39:14.786+00:002018-12-05T23:39:14.786+00:00I want to add dpdt switch to lift up octave inste...I want to add dpdt switch to lift up octave insted of on/on toggle with on/of led so I know the octave is on or off How I would wire that please help Angelhttps://www.blogger.com/profile/16376743831150085397noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-72213064128151836852018-09-18T06:15:26.948+01:002018-09-18T06:15:26.948+01:00I found an old etched version of this Tycobrahe I ...I found an old etched version of this Tycobrahe I had made in the 90s. Was disappointed with it, and tossed it in the junk box..where it's been for 20+ years! <br /><br />I didn't fire it back up, but went ahead and pulled the TM022 and 1N34a's from the board and rebuilt on vero - along with the Pre Gain and Octave Kill mods. <br /><br />Seems the Octave sounds best in this build with Q1 installed as shown in the layout. (I'm using a 2n3906 & 2-2n5088s)<br /><br />However, I found the fuzz-only sounds better with Q1 flipped, less gated and less flubby...although that can be cool at times too. <br /><br />I ended up going with a 3PDT Fuzz/Octave toggle so when it cuts the octave, it also flips Q1. <br /><br />This one sounds much better than I had remembered. <br /><br />As always, thanks again to all. MAOhttps://www.blogger.com/profile/16009444316767677263noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-27693092790961897412018-08-26T10:30:40.990+01:002018-08-26T10:30:40.990+01:00All sorted now thanks. Working and sounding great!...All sorted now thanks. Working and sounding great! I reheated the solder joints and made sure the cuts were properly made. Jobs a good'un!Anonymoushttps://www.blogger.com/profile/05735059481429635718noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-64521321733041592582018-08-25T12:40:45.878+01:002018-08-25T12:40:45.878+01:00But you did build the version above?
The original ...But you did build the version above?<br />The original Octavia was positive ground, whereas the one posted here is a standard negative ground version and works without any problems. The original positive ground circuit is not daisy-chainable with standard pedals, the one here is daisy-chainable.JimSalabimhttps://www.blogger.com/profile/14526927743273280454noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-50706491973576161672018-08-25T12:34:15.564+01:002018-08-25T12:34:15.564+01:00Hi, thanks for the quick reply! I must have short ...Hi, thanks for the quick reply! I must have short somewhere as it is cutting power to my other pedals when plugged in. Anonymoushttps://www.blogger.com/profile/05735059481429635718noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-17312474964692662892018-08-25T11:38:49.345+01:002018-08-25T11:38:49.345+01:00But actually it simply depends on how you wire the...But actually it simply depends on how you wire the DC jack ;-) Just do your offboard wiring like this:<br />https://www.sabrotone.com/?attachment_id=3450<br />or this (with battery):<br />https://www.sabrotone.com/?attachment_id=3456JimSalabimhttps://www.blogger.com/profile/14526927743273280454noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-56161456278540202692018-08-25T11:31:45.521+01:002018-08-25T11:31:45.521+01:00Yes, you can. Standard guitar pedal 9V supply, cen...Yes, you can. Standard guitar pedal 9V supply, center negative.JimSalabimhttps://www.blogger.com/profile/14526927743273280454noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-9221122192612168932018-08-25T11:30:32.059+01:002018-08-25T11:30:32.059+01:00This comment has been removed by the author.JimSalabimhttps://www.blogger.com/profile/14526927743273280454noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-12377473270937434132018-08-25T11:24:41.372+01:002018-08-25T11:24:41.372+01:00Hello, please can you confirm the polarity of this...Hello, please can you confirm the polarity of this pedal? Can I use a standard boss style power supply? CheersAnonymoushttps://www.blogger.com/profile/05735059481429635718noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-42211753314500527712017-08-30T18:56:53.407+01:002017-08-30T18:56:53.407+01:00Hi guys, is it possible to use pot to blend the oc...Hi guys, is it possible to use pot to blend the octave instead of on/off switch to operate octave? Like in ehx octavix. Thanks!Petezhttps://www.blogger.com/profile/06434324705269829836noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-22577835766558534812017-07-15T14:59:12.102+01:002017-07-15T14:59:12.102+01:00Hi i know it`s been 3 years but i have built the p...Hi i know it`s been 3 years but i have built the pedal and i have the same problem.The boost pot does nothing..Did you manage to fix yours?Boukmanhttps://www.blogger.com/profile/15699313941924133575noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-57543333032091260672017-05-14T18:18:55.788+01:002017-05-14T18:18:55.788+01:00Turning around Q1 definitely sounds more awesome!
...Turning around Q1 definitely sounds more awesome!<br />Thanks again for this great layout – I have built a second Octavia for a friend today, since he was so jealous of mine ;-)JimSalabimhttps://www.blogger.com/profile/14526927743273280454noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-37055492831420399552017-03-16T03:24:32.814+00:002017-03-16T03:24:32.814+00:00V2 with the Pre-Gain - I like both versions.
http...V2 with the Pre-Gain - I like both versions.<br /><br />http://imgur.com/vC6hEAMpgoreyhttps://www.blogger.com/profile/01881188981150085988noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-85628276570192492242017-03-08T03:51:53.520+00:002017-03-08T03:51:53.520+00:00I enjoyed this build and thank you for the verifie...I enjoyed this build and thank you for the verified layout. Built two of these. One with / without the pre-gain 50k linear pot. I love them both. Great sounding fuzz and the octave sounds pretty nice on mine with interesting blooms. I'm using a 73' Fender Bronco with a modified / added neck pickup and tone rolled to 6/7 and volume around the same for the best results. Also first in the chain and compression / more dirt after it really makes this thing sing. I have found everything from crazy enharmonic notes to cool sitar resonances with muted plucks and sustained notes alike along with the expected Hendrix vibe. I'd like to try veli's mods to see about the better tracking and low mids boost. I find I have a low / mids boost as is when I switch to just fuzz but maybe I'm missing out on a better sound in general. Anyway, thanks again for the layout. Picture of the non-pregain here: <br /><br />http://imgur.com/a/qXTwPpgoreyhttps://www.blogger.com/profile/01881188981150085988noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-89507387208684301112017-02-02T11:51:35.530+00:002017-02-02T11:51:35.530+00:00Let me report on this. First, thanks for the layou...Let me report on this. First, thanks for the layout. I built it, got decent octave (tested with a Strat). It has a bit too much low fregs for my taste though. Hence, I changed a few things:<br />- input cup - down to 22nF<br />- output cap - down to 47 nF<br />220uF to 47uF.<br /><br />The 100uF cap I left, not sure about its function. <br />The 33uF to the transformer I reduced to 0,47uF (electrolytic).<br />Ge diodes I selected both ~300mV.<br /><br />I think now the tracking is better. I used fixed 1K resistor instead of the pot to get the cleanest octave. When the octave switch is off I got a low-mids boost as well. Octave sounds good with OD after. velihttps://www.blogger.com/profile/10687838409966421391noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-16367789572253594992016-11-01T15:55:47.234+00:002016-11-01T15:55:47.234+00:00Isn't the TM011 somewhat more into spec? 1,5k:...Isn't the TM011 somewhat more into spec? 1,5k:500R vs 1,5k:600R? Or is that an irrelevant difference?Arnold Dikstaalhttps://www.blogger.com/profile/00591790612241477571noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-73946951700893657842016-05-31T16:13:42.385+01:002016-05-31T16:13:42.385+01:00Used an audio probe and found out one of my diodes...Used an audio probe and found out one of my diodes was jacked up. I replaced it with another and chose one that had a matched forward voltage. This appears to have fixed the problem.Anonymoushttps://www.blogger.com/profile/02121471681303023638noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-63249989456837744862016-05-29T12:59:54.911+01:002016-05-29T12:59:54.911+01:00Just finished the build and when using the D1 lift...Just finished the build and when using the D1 lift switch, the volume drops drastically, even when I turn up the pedal volume and boost all of the way. When the diode is back in the circuit it is loud and works fine. Any ideas? I did check and D1 has a forward voltage of about .225v and D2 about .249v<br /><br />ThanksAnonymoushttps://www.blogger.com/profile/02121471681303023638noreply@blogger.com