Monday 2 May 2022

Arion MDS-1 Distortion

 The cheap plastic casings fools us but Arion did some really good sounding stompboxes in the 80s and 90s. Here is a quite simple distortion unit that is supposed to be a sleeper. Earlier versions had silicon diodes as hard clippers which was switched to red LEDs later on. So I included a diode switch.

Schematic is avaiable HERE.


 


11 comments:

  1. Anders, you probably don't need new ideas, but Madbean has a silicon Fuzz Factory called the Chaos Agent and a version of the Mu-Tron II called the Glasshole.

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    1. First of all, this layout looks right up my street, and a silicon fuzz factory piques my interest (I couldn't get the original one here to fly right)

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    2. Hay Tom, thank dor making me aware of that one. I will defitely do a layout for it. But I'm doing an eye surgery in three days so so I'm sort of emptying the last layouts in the bucket at the moment. Hopefully I'm allowed to sit in front of a computer screen for longer periods a week or so after the surgery, I will give it a stab the!

      But don't worry I have few filthy noisemakers in the bucket.

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  2. I hope it's nothing serious. Maybe it'll buy you some extra down time. Take it easy man.

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    1. Nah, nothing too serious but it will require some recovery and rest.

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  3. Tag it! It's pure, bright, in you're face filth. When set on the 4148's it's even brighter, which surprised me a bit.

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  4. Also, just need to add the vol 2 to output note on the layout. Cheers, Ben.

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    1. Right on! Tagged and notes added.
      This thing seems to be an interesting mod platform for several types of eq controls for more low end or treble cut.

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  5. I've built this and it sounds really good, but the tone pot causes a wild oscillation when turned up even slightly. Is there anything that can be recommended to cure this. I tried a smaller pot value of 2k but this resulted in no sweep on the range of the pot.

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    1. I didn't built it. But with this kind of issue I advice shielded cable for input and output jacks.
      If it doesn't work you could try to interrupt tracks where is not in use to avoid that pass too close to each other.
      For example, do you see in the stripe A the cut track in column 8? Add a cut track close to the 470R and another to the 2.2k, in this way those are less close each other.
      The same thing in the stripe M: a cut track close to the 33nF and another close to 47k (under the 10k).

      Let us to know if you try one of these tricks.

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  6. Have cut these tracks and it's made a big difference. I now only get the oscillation when the pot is fully open. Thanks Elijah

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