Saturday, 22 June 2019

Mountainking Megalith

Here is two layouts of "mother of all doom fuzzes". One smaller with Notch switch as a toggle to make it easier to fit it in a smaller enclosure. And one larger with all caps on board and rotary switch per original. Both layouts is verified and rocking.




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25 comments:

  1. MTK30 April 2020 at 22:13

    You said it was "THEE doom fuzz" and you weren't kidding. I haven't been building these things very long but I've done a lot and I've been completely in love with the Hoof Reaper and the Ultra Stoner/Rat pedals. All the other fuzz pedals I've built never make it to their level but this one... Wow! So heavy. It just wants to doom. Thanks for the suggestion, it's amazing.

    The off-board wiring on this one was hard to just freehand like I usually do. It would've been a pile of chaos. I had to throw it in DIYLC and make sure I got it right then I wired it into the enclosure.

    https://i.imgur.com/ec5MSIr.png

    I found a couple errors. The cap connected to the base if Q3 should be a 470nF and Lug 1 of the More pot should go to ground, just Lug 2 goes to the 47uF positive.


    Demo - https://www.youtube.com/watch?v=GRH79Mezpnc

    Build - https://imgur.com/a/eeDvXdU

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    1. fuzzhead30 April 2020 at 23:13

      Hehe, I had a feeling that you would like it. I really don't know what possibly can be heavier than this? Very impressive to fit it in such a small box! And thanks for reminding me to upload the corrected layout. Had a big enclosure lying around so I built a sligtly larger layout a couple of days ago with rotary per original so I uploaded that layout as well.

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    2. spectreman4 May 2020 at 23:24

      Hey MTK,

      How did you wire your "More Heavy" footswitch? I see a DPDT footswitch there, but I'm not sure how it's wired...Thanks!

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    3. MTK5 May 2020 at 00:04

      Hey, man. The layout should say More Heavy Sw 2 to Output Lug 3. If you want to add an LED, connect it to More Heavy Sw 4, ground to Sw 5.

      Delete
  2. MTK5 May 2020 at 00:07

    Got a graphic for this one in place a few minutes ago. M82 Starburst Galaxy. Space seems like a good fit for the heaviest fuzz out there. The new small layout needs to have Output 3 / More Heavy Sw 2 updated. Thanks again for letting me know about this one. I'm really digging it.

    https://i.imgur.com/7JxIu7U.jpg

    https://i.imgur.com/CNvFYVG.jpg

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    1. Elijah-Baley5 May 2020 at 10:37

      Your works are great!
      I know I ask for anything, but what did transistors you use? I see BC338-25 and BC338-40 with lower or higher hfe.

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    2. fuzzhead5 May 2020 at 11:55

      More Sw 2/Output 3 connection fixed.
      It still baffles me that you managed to fit everything in such a small box. And very nice artwork and fonts.

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    3. MTK5 May 2020 at 13:35

      Thanks, Mr. Head. I appreciate it. I'm actually using that font for the Model T pedal as well.


      Elijah-Baley - I used BC338-40's from Tayda. I just tested 3 from the tape and they're between 340-350 hfe.

      https://www.taydaelectronics.com/bc338-npn-general-purpose-transistor-25v-800ma.html

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    4. Elijah-Baley5 May 2020 at 22:08

      I thank you, I'll put a pair of them in the cart. :-)

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  3. Quinn3014 June 2020 at 08:46

    whats up with the 1nf on the output?

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    1. Elijah-Baley4 June 2020 at 22:29

      I don't know the schematic where this two layouts come from, but just one of the two layouts has that yellow 1nF I think you said.
      That 1nF is simply across 9v and ground, in parallel with the 220uF, usually we can see a 100nF there, maybe 10nF.
      he bigger layout has no too much room for it. There's a little space just to the right of the 220uF, but I doubt you can fit it there. Often the 220uF is a large cap. But don't worry, it's not necessary, I guess.
      The Output 1 (the volume pot) goes to the ground, nothing to do with the 1nF cap. The signal goes to the Output 3 and the output effect is at the Output 2.

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  4. Quinn3015 June 2020 at 15:16

    Just finished this and its amazing..still have to try more transistors 2n3904 sounds great in Q2..but oddly there's not much difference with Q3..even if I leave it out of the circuit..still sounds heavy as balls

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  5. MTK14 June 2020 at 22:28

    Operation Cram a Mountainking Megalith into a 1590A-tall was a complete success. No room to spare. Is it a Microlith, a Minilith, a Mini-Megalith? I dunno. I had to move stuff around but it fired right up. So much heavy from a tiny box.

    https://i.imgur.com/lfyr592.jpg

    https://i.imgur.com/GHbvFzK.jpg

    https://i.imgur.com/B6yP3kz.jpg

    https://www.youtube.com/watch?v=j0bX2QAPz-Y

    I added all the pics to the other Megalith folder.
    https://imgur.com/a/eeDvXdU

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    1. fuzzhead15 June 2020 at 22:46

      ...or Nanolith.
      Quite speechless to be honest....if I ever going to buy a fuzz again it is going to be that one....

      Delete
  6. Alamondm11 January 2021 at 04:02

    This pedal is bada$$. Love this one.

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  7. kieron8 March 2021 at 07:50

    I’m struggling to get the more led working, everything else works great. I attached the +led to the point labelled on the right side of the main board and attached -led to pin 5 on the “more” foot switch like it says in comments, I also tried attaching the + to pin 4 of the “more” foot switch but still no luck. Could someone clarify how this is attached please? I really love this pedal but the lack of the 2nd led is bugging me

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    1. Elijah-Baley8 March 2021 at 10:37

      The +LED have to go to the board, I think as you're doing. The -LED have to go, reading the suggestion some posts above, in the lug 4 fo the footswitch More. But you have to connect the ground to the lug 5 of the footswitch More. So when you engage the footswitch the -LED goes to the ground.

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  8. turnbuckle10 July 2021 at 19:46

    I built this, but when I set up the board on my test jig, I somehow bypassed the tone controls entirely. Sounded incredible, but none of the switches or tone knobs did anything. Then I figured out what I had wrong and fixed...all the tone controls became responsive, but I could not get any sounds out of it that I liked nearly as much as with the tone controls bypassed! So I bypassed the tone controls and boxed it up, and it is my new favorite fuzz. Thanks for the layout!

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  9. dash2132 July 2022 at 15:41

    I just built this about a month ago, and it’s awesome. Just wondering how to go about removing the more heavy switch altogether, and just having the more heavy mode on all the time, because I never use this without more heavy off.

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  10. Ckngmad25 September 2022 at 01:05

    This comment has been removed by the author.

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  11. Ckngmad25 September 2022 at 01:09

    Hey guys
    I built this heaviest pedal
    Cardboard enclosure and flower sticker lol
    Model it like two stacked amp head
    Separated power supply using l7809 regulator
    Slide potentiometer on slope
    So much doom
    I'm using 2n4401 and 2n3904
    Diffused yellow led
    Played on bass c# tuned
    Thankyou for the layout
    MTK and Fuzzhead is my hero

    https://youtu.be/wN1E16p6Xug

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  12. Ckngmad10 February 2023 at 17:23

    This comment has been removed by the author.

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  13. magus fremar12 February 2024 at 22:13

    Hey Fuzzhead! I just made this , and it seems to work well, except the "more heavy" switch, when I flick it , I get mega volume drop , is this normal ? It is so strange , makes me wonder if this switch is even necessary ? I can just put more sw3 to output 3 , no ?
    Besides this, it is an excellent effect, just wish there were more doom effects for bass guitar! Thanks for all your effort you put in the website and all the layouts, very cool !

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