This is a library of perfboard and single-sided PCB effect layouts for guitar and bass. I'm not an electrical engineer by any stretch of the imagination, just a DIY'er who likes drawing layouts. It is meant for the hobbyist (so commercial use of any of these layout is not allowed without permission) and as a way to give back to the online DIY community.

Monday, April 3, 2023

Ross Phaser

 Yes, Modulation Monday is back with the Ross Phaser. It's not for the feint of heart, but doesn't require any JFETs, matched or otherwise. Instead it uses OTAs with 3, LM13700N (one for the LFO, two for the audio path). Should fit nicely in a 125B with top mounted jacks. Schematic for reference.



7 comments:

  1. It works! you can mark it verified. It does have a vibe and feel like a vintage pedal, and some great phasing sounds.

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    Replies
    1. How about Beetronics whoctahell? a nice simple one. https://docs.pedalpcb.com/project/DirtDauber-PedalPCB.pdf

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    2. The 3.3 electro is 3.3uf

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    3. Was checking the comments exactly for this.Thanks

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    4. https://docdro.id/4YhimFr
      check my post too!!
      https://www.diystompboxes.com/smfforum/index.php?topic=130479.0
      have fun!!

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  2. Hola a todos .. Funciona ! los integrados a 2024 todavia se consigen.. yo los compre desde china, Saludos.

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  3. I finally got around to putting this one together. Thank you!!! This layout is excellent work as always, my board is now swooshing and swirling like never before. I did follow Dee's advice from an earlier comment and used a 3.3uF cap for C11 as indicated in the schematic.

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