tag:blogger.com,1999:blog-6847048658257278783.post8629692596290496369..comments2024-03-29T01:36:12.851+00:00Comments on Guitar FX Layouts: EHX 66 Triangle Big MuffIvIarkhttp://www.blogger.com/profile/08416945174853142251noreply@blogger.comBlogger74125tag:blogger.com,1999:blog-6847048658257278783.post-3944980545082065512023-09-15T07:28:52.692+01:002023-09-15T07:28:52.692+01:00Mpsa18 is a good candidate for high gain transisto...Mpsa18 is a good candidate for high gain transistor for all bmp'sJun dhttps://www.blogger.com/profile/07905810487041216546noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-91611988680169278352021-08-19T22:22:32.648+01:002021-08-19T22:22:32.648+01:00Great one. Thanks for the layout. Sounded good w...Great one. Thanks for the layout. Sounded good with 5089’s but better with 550’s. I had 550b’s on hand. Gave it more of a grit and character than the higher gains. You could probably stick 550c’s in Q1 & Q4 and the slightly lower gain in Q2& Q3 as I’ve read that’s how they were originally done. Remember that the pin out for 550’s are reverse. I didn’t Tomhttps://www.blogger.com/profile/00083508505870725881noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-20048696503090955102020-12-30T17:37:39.827+00:002020-12-30T17:37:39.827+00:00I have built this and it kind of works, but the ou...I have built this and it kind of works, but the output is lower than I expected. With a 200mV 1kHz input, max sustain and volume, tone at mid, I get about 600mV P2P output. With sustain and volume both at midpoint, I get 60mV P2P (i.e. significantly less than input).<br /><br />I've spent ages going over the build and the only thing I've picked up is the reversal of the capacitor and resistor that connect to the sustain pot. All schematics show capacitor followed by resistor, but the layout has them the other way around. <br /><br />My quiescent base voltages are (input to output) 0.56, 0.56, 0.55, 0.96<br />The collector voltages are 7.18, 7.5, 6.7, 7.6<br />Signal (P2P) at the collector of each (given 200mV 1kHz input) are: 250mV, 650mV, 800mV, 561mV.<br /><br />Note that the signal on the collector of the first transistor decreases significantly as the sustain is increased to max (due to the swapped cap and resistor?)<br /><br />Without having another one to compare against, I don't know whether it's behaving as it should, but I feel like it probably isn't.<br /><br />Any help appreciated.<br /><br />Piershttps://www.blogger.com/profile/17933501476731780757noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-57260566834425923142020-08-27T17:44:32.024+01:002020-08-27T17:44:32.024+01:00How do ya'll get a 21 column wide board to fit...How do ya'll get a 21 column wide board to fit in a 1590b? I have a hard time getting smaller boards to fit. By the time i get the jacks and pots in it doesn't leave to much space...and putting the board on top the pots makes it stick up too high. Are there any tutorials on cramming boards into enclosures? I would love to be able to use something smaller than a 1590bb, but it's the only size I can get everything to fit in.ManicStrat2112https://www.blogger.com/profile/06899304836631611818noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-79126913243157551382020-08-27T17:42:02.184+01:002020-08-27T17:42:02.184+01:00This comment has been removed by the author.ManicStrat2112https://www.blogger.com/profile/06899304836631611818noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-27585866145884053922020-08-17T11:51:41.129+01:002020-08-17T11:51:41.129+01:00I can't remember which schematic this was done...I can't remember which schematic this was done from. The 100u in that position is a power filtering cap used to minimise noise, but you don't have to use it if you don't want to. Likewise you could omit the reverse polarity protection diode in series with the supply and just take the supply to the middle row hole between Tone 3 and Sustain 3.IvIarkhttps://www.blogger.com/profile/08416945174853142251noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-89107908605813641942020-08-07T18:57:10.367+01:002020-08-07T18:57:10.367+01:00Is this the schematic used?
http://www.kitrae.net/...Is this the schematic used?<br />http://www.kitrae.net/music/Images_Secret_Music_Page/KITS%20V1%2066-11%20SCHEMATIC.jpg<br /><br />If so, what is the purpose of the 'phantom' 100u on the layout?<br /><br />Thanks!Old and Ignored https://www.blogger.com/profile/06772581922016192424noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-7055408361575347392020-05-31T13:20:24.017+01:002020-05-31T13:20:24.017+01:00Now that one is awesome. I am currently also build...Now that one is awesome. I am currently also building the Green Russian (completely different soundwise). I love and this one grittier and more dirty. <br /><br />I used BC550C, but will also try 5089. :-)ClassicFuzzhttps://www.blogger.com/profile/16806215654593217637noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-13518009044728333962020-03-30T14:57:40.578+01:002020-03-30T14:57:40.578+01:00There must be a problem with the connections. The...There must be a problem with the connections. The 1K resistor that Sustain 1 connects to means that the signal can never be fully dumped to ground, and so it should never go silent at full counter clockwise rotation. So check the pot, the Sustain 1, 2 and 3 wires, and the 1K resistor.IvIarkhttps://www.blogger.com/profile/08416945174853142251noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-72492714288383202122020-03-28T15:02:43.898+00:002020-03-28T15:02:43.898+00:00Dear Fellows,
My build is acting strange, and I do...Dear Fellows,<br />My build is acting strange, and I don't have the experience yet to understand what possibly went wrong. The thing works only with the Sustain pot fully clockwise. Turning it counterclockwise at almost 90% the distortion goes down to almost clean tone, at 60-70% signal goes down into complete silence at 50% and then down it increases to very quiet clean tone at fully counterclockwise sustain pot.<br />Where do I start to look for the cause of this?raddskkhttps://www.blogger.com/profile/01967629641547083611noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-39941076499974679402020-03-10T21:18:37.025+00:002020-03-10T21:18:37.025+00:00Many people have built this layout so it's def...Many people have built this layout so it's definitely verified and good to goIvIarkhttps://www.blogger.com/profile/08416945174853142251noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-49801632042522096502020-03-09T11:58:43.878+00:002020-03-09T11:58:43.878+00:00Hi, the bitbox kit has arrived.
Can I follow the p...Hi, the bitbox kit has arrived.<br />Can I follow the pattern or are there any mistakes??<br />Hello from ItalyDave Itahttps://www.blogger.com/profile/01560235406806339257noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-3655421116896344952020-02-24T14:53:40.444+00:002020-02-24T14:53:40.444+00:00Nope. Just leave the switch out and do not add any...Nope. Just leave the switch out and do not add any caps. The stock setting is present with the on-off-on switch in middle position. That's the 4n cap in the layout that is setting the mids. If you don't have 4n cap available, then use 3n9 or 4n7 in there and leave the switch out compeletely.<br />+mmirosolhttps://www.blogger.com/profile/02400327798106357876noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-57411401271266194782020-02-24T11:16:38.111+00:002020-02-24T11:16:38.111+00:00Hey all, sorry for maybe a dumb question, but am I...Hey all, sorry for maybe a dumb question, but am I reading it right that if you'd like to omit the mids switch and have it no effect on a circuit one should put a 4n7 cap between Sw1 and Tone 3 ?raddskkhttps://www.blogger.com/profile/01967629641547083611noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-1430019527892877602019-11-02T17:39:05.859+00:002019-11-02T17:39:05.859+00:00Hi guys! Just finished building this pedal and it&...Hi guys! Just finished building this pedal and it's a BEAST! I have one issue though and it happens when I'm switching from bypass clean to fuzz...once I switch over, whilst I still hear the great fuzz sound it takes around 2 secs for it to reach full preset volume. Have any of you come across this problem before and, if so, is there a remedy? Thanks in advance!PlymouthSoundshttps://www.blogger.com/profile/15926067978103818569noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-71741564314671469972019-09-21T17:31:07.292+01:002019-09-21T17:31:07.292+01:00I bought a Triangle muff used in 1975, stolen in 1...I bought a Triangle muff used in 1975, stolen in 1981. <br /><br />Using this build with the first (3) transistors being Fairchild SE4010 and the last being a 2N1533. This sounded as close to the original as I can recall! The extra tone shaping via the switch is a great add, basically retiring my 2016 Big Muff Deluxe.<br /><br />Also saved a bunch of money building vs. buying the recent reissue.andrewsreahttps://www.blogger.com/profile/07502456725809466363noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-3361755799906043002019-08-04T02:37:42.093+01:002019-08-04T02:37:42.093+01:00Hello everyone, years ago I made the "green m...Hello everyone, years ago I made the "green muff" from this schematic: http://www.tonepad.com/getFile.asp?id=94 but I would like to add the mid switch, should I modify something on the board I have or should I wire the switch normally (mid left of the switch to the tone pot lug 3 and mid right to the bypass switch 1) without doing anything else?, thanks!.R. Bastidashttps://www.blogger.com/profile/17569645662522684249noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-86599018272996672442018-07-19T10:06:24.162+01:002018-07-19T10:06:24.162+01:00looks like the 120n and 8k2 hanging off sustain 2 ...looks like the 120n and 8k2 hanging off sustain 2 are around the wrong way. thx.Peter Rabbithttps://www.blogger.com/profile/04474939429081766562noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-88301903509856376882018-06-28T00:08:51.165+01:002018-06-28T00:08:51.165+01:00Looking at a potentiometer from the bottom, you ha...Looking at a potentiometer from the bottom, you have from left to right, lugs 3, 2 and 1. All you do is to properly solder the wires from the board to the correspondent of the potentiometer lug (e.g. wire named "Tone 2" gets soldered to the middle lug of the pot that will be used for the tone control). <br /><br />When you have "Volume 2 to Output" means you have to solder a wire to the middle lug of the volume pot and then you solder the other end to the output lug on the footswitch you are using (a 3PDT, usually). If you are unsure about how to to the "offboard wiring" or soldering to a footswitch, you'll have to check the Offboard wiring guide and the general build guide here on the blog. It's highly recommended you do. Iagohttps://www.blogger.com/profile/13478141026000247956noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-58144012475777803402018-06-27T16:16:47.365+01:002018-06-27T16:16:47.365+01:00Hi guys, I just bought all the bits for this but I...Hi guys, I just bought all the bits for this but I'm unsure how to wire the pots into the circuit board. Can anyone help?Piershttps://www.blogger.com/profile/17933501476731780757noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-736775726094535402018-05-31T19:00:57.961+01:002018-05-31T19:00:57.961+01:00hi guys, so i scored a batch of 2n5133 transistors...hi guys, so i scored a batch of 2n5133 transistors if you are interested email me inaki.font@correo.unimet.edu.veAnonymoushttps://www.blogger.com/profile/15051596840147723976noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-52856631997835853412017-11-28T12:27:28.753+00:002017-11-28T12:27:28.753+00:00I keep coming back to this and I am close to succe...I keep coming back to this and I am close to success but not quite, I've done my own PCB and the signal is getting through the board but there is a lot of hiss, and the tone pot is acting peculiar, when I touch it it hums as if an grounding problem, but the level comes and goes as I rotate it. I tried losing the switch and tried another pot, but still the same. <br />Anonymoushttps://www.blogger.com/profile/14079415574066628527noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-9934194569334177712016-11-29T14:15:42.237+00:002016-11-29T14:15:42.237+00:00This comment has been removed by the author.Anonymoushttps://www.blogger.com/profile/14079415574066628527noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-6237622213492127632016-05-22T20:37:04.780+01:002016-05-22T20:37:04.780+01:00Hi,
4 years After but i Have The same issue. Have ...Hi,<br />4 years After but i Have The same issue. Have you resolve your problem?<br />Thanks.Anonymoushttps://www.blogger.com/profile/07031604654196314248noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-36527333062068133872016-04-30T09:45:33.572+01:002016-04-30T09:45:33.572+01:00Could I ad an pulldown resistor to this layout wit...Could I ad an pulldown resistor to this layout without messing anything up? There is room for it under the input transistor.Anonymoushttps://www.blogger.com/profile/13530728442708425843noreply@blogger.com