Saturday 21 January 2017

Catalinbread Manx Loaghtan

I know there have been veros around for a while but I wanted to add this project to the main page.
It's basically a Rams Head Muff with an added Baxandall tone control.
You can find original FSB thread and schematic here.
It should easily fit it in 1590B size box.


Crank both treble and bass and you get a classic scooped midrange. Back both off, while turning up the volume knob and your midrange content increases. Park the treble and roll back the bass and the midrange scoop frequency shifts downward so you have complete control over which frequencies you are cutting. Roll the bass below noon and you start to add a bump to your midrange, which is great for running into a hot amp. This tone control style is capable of numerous sounds, making the Manx Loaghtan one of the most versatile pedals of this style.” - See more at: http://tonereport.com/blogs/lifestyle/big-muff-shootout/page/three#sthash.Pt8yzCYp.dpuf
Baxandall tone control
Rams Head Muff
Rams Head Muff
Rams Head Muff
Rams Head Muff
Posted by at 16:35
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16 comments:

  1. AlexS21 January 2017 at 20:39

    Thanks. On the page after the schematic was posted, they correct the 470k's going from base to ground on Q2,Q3 as 100k instead - like on Q1,Q5.

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  2. Mr.Baiser23 January 2017 at 01:10

    Baxandall? Isn't this a passive tonestack? Then it's called "James"

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    Replies
    1. Zach23 January 2017 at 02:59

      The tonestack is known as a James-Bandaxall tonestack, and can be active or passive. In this case just like the stock BMP tonestack it's passive, with a recovery stage after it to regain the output lost from the tonestack.

      Delete
  3. ξεναγός νεκρόπολης23 January 2017 at 21:39

    Hey Alex...i just had to say it once more..i love your layouts dude...!!!anyway..i'll start this in the next days, so i hope i'll get it verified..

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  4. Hozy3124 January 2017 at 17:10

    Verified! I did find the level a bit low so i changed the 2k2 coming of the emitter of the 2N2222 to a 1k as mentioned in the thread on FSB and now it sounds perfect. Thanks Alex.

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    Replies
    1. Alex25 January 2017 at 10:52

      Cool!
      Thanks Gavin! I've changed the resistor's value.

      Delete
    2. ξεναγός νεκρόπολης5 February 2017 at 09:30

      hey Gavin! does your build sound ok with trele and gain over 50%?

      Delete
  5. Convergent Sound30 January 2017 at 05:42

    Anyone else get some oscillation/whine from higher fuzz settings? My only substitutions were the 130ohm resistors subbed with 120ohm. Otherwise, it sounds great!

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    Replies
    1. ξεναγός νεκρόπολης5 February 2017 at 09:28

      i get whine...i've build the pcb from perf&pcb effects layouts.my only substitutions are 120Ω for 130Ω too...
      i'm working on it.did you found any solution?

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    2. Hozy315 February 2017 at 11:28

      Hey guys, I don't get any whine or noise at all. Do get a bit of self oscillation when sustain maxed but not in a bad way. I'm using metal can 2N2222s if that makes a difference.

      Delete
    3. Convergent Sound9 February 2017 at 02:28

      I haven't found a solution to the whine/oscillation other than running a buffer before the circuit. That fixed it up (and I've gone this route with a few other circuits with a similar issue), but it may be overkill.

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    4. ξεναγός νεκρόπολης9 February 2017 at 18:58

      my build is ok now. the layout here has 100k from all bases to ground. there was a mistake in the layout i used...cheers

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    5. Convergent Sound9 February 2017 at 21:44

      This comment has been removed by the author.

      Delete
  6. Unknown3 July 2017 at 17:21

    just finished my build (with 120r instead of 130r, everything else as mentioned), i get a signal, but it is extremely quiet! the controls all semm to do what they should, but i'm a ca 5% of bypassed gain... any ideas what i should look out for? regards...

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